HELP NOW! What happens during the process of digestion?
Answers
Answer:
As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the stomach
Answer:
Food contents that the animal or creature has swallowed goes into the stomach. The contents gets broken down. The energy from the contents will then go through the body.
Related Questions
According to the Laws of Conservation Matter Atoms are not
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they are not created or destroyed
what is the pH of hydrogen chloride and sodium oxide
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after four half-life periods for a first-order reaction, what fraction of reactant remains?
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\(\frac{1}{16}\) or 6.25%
Explanation:Half-life describes how long it takes for half of a reactant to react.
First-Order Reactions
The question describes the reaction as first-order. In first-order reactions, half-lives are not dependent on concentration. This means that the half-life remains constant throughout the entire reaction. The equation for first-order half-life is:
\(\displaystyle t_{1/2}=\frac{ln(2)}{k}\)In this equation, t is the length of the half-life and k is the rate constant. As you can see, concentration is not a variable in half-life
Half-life
After each half-life, 50% of the reactant forms the product. This means that 50% of the reactant is gone after 1 half-life. So, starting with 100%, we can divide by 2, 4 times.
100% ÷ 2⁴ = 6.25%In fraction form, 6.25% = 1/16. So, after 4 half-lives 1/16th of the reactant remains.
which statement is correct regarding the reaction ?
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The true statement is that after reaching equilibrium, the rate of forming products and reactants is the same.
What is true about the given reaction?The given reaction shows a reaction between A and B to form CD
The reaction is a reversible reaction.
A reversible reaction is a reaction which can proceed in either of two ways where the reactants can react to form the product and also the products an break down to form the reactants.
In the reaction given, as the concentration of A and b decreases, the concentration of CD increases and vice versa.
At equilibrium, the rate of formation of CD is equal to the the rate of decomposition of CD.
Therefore, the true statement is that after reaching equilibrium, the rate of forming products and reactants is the same.
In conclusion, a reaction at equilibrium has the forward and backward reactions occurring at the sane rate.
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For an atom to be neutral, it must have the same number of electrons as what other particle
A. Protons
B. Atomic mass
C. Neutrons
D. Photons
Answers
Protons = positive charge
By having the same number if electrons and protons, the charges cancel out and allow the atom to be neutral.
Answer: A
Answer:
A. Protons
Explanation:
For an atom to be neutral, it must have the same number of electrons as protons. Since protons are positive and electrons are negative, that will result in a neutrally charged atom.
hope this helps!! p.s. i really need brainliest :)
What is the scientific notation of 36000x10 ex.10?
Answers
Answer:
3.6 times 10^4
Explanation:
Scientific notation is between 1-9. So, we move 36000 to 4 decimal places. SO it would be 3.6 times 10^4. Scientific Notation always has the base of 10 . Enjoy :)
WHY have we studied the justice system in this forensic science class?
Answers
Answer:
Criminal justice and forensic science are two degrees often pursued by those with a sincere interest in and passion for the criminal justice system. Indeed, a degree in either of these fields can eventually lead to a career in law enforcement in a number of capacities, including crime scene analysis, crime scene investigation, or as a forensic science technician.
Beyond this, however, is where the two areas of study begin to differ. While the study of criminal justice focuses on crime, it hones in on the causes of the crime, any responses by law enforcement agencies, and prevention methods to consider and employ in the future. As such, a student pursuing a degree in criminal justice can expect to take courses on law and legal theory, law enforcement philosophies and theories, sociology and criminal behavior, and others related to criminology. A developed understanding of concepts within each of these subfields can help a student of criminal justice apply this to real-world situations, and perhaps even obtain future employment as a police officer or detective, an FBI agent, an immigration officer, or any other member of a law enforcement agency.
In contrast to this, those studying forensic science will also examine crime, yet from an entirely different perspective. This field of study focuses on the application of science and scientific methods to understand all aspects of a crime, including the perpetrator and the causes. Those studying forensic science are certain to take courses in physical sciences, such as biology and chemistry, as well as others related to DNA and fingerprint analysis, crime scene procedure, and other types of forensic analysis. Because those working in the field of forensic science routinely interact with members of law enforcement, students will also likely take courses on forensic case reporting and investigation techniques. Although there is no one career path for a student of this field, possible future options include employment as a forensic pathologist, a toxicologist, an evidence technician, or even an intelligence analyst, depending on what level of education that student pursues.
I hope this much of information is helpful for you :)
Explanation:
Why do we standardize the naoh solution which we made by dissolving a measured mass of solid NaOH?
Answers
Standardizing a sodium hydroxide solution is necessary because NaOH reacts with atmospheric carbon dioxide to form sodium carbonate and water, reducing the accuracy of its concentration.
We standardize a sodium hydroxide (NaOH) solution, which means we determine its exact concentration, because NaOH is a strong base that reacts with atmospheric carbon dioxide (CO₂) to form sodium carbonate (Na₂CO₃) and water (H₂O):
2NaOH (aq) + CO₂ (g) → Na₂CO₃ (aq) + H₂O (l)
This reaction reduces the concentration of NaOH in the solution, making it less accurate for titrations or other chemical analyses. Standardizing the NaOH solution involves titrating it with a known concentration of an acid, such as hydrochloric acid (HCl), using an appropriate indicator to determine the exact concentration of NaOH.
During the titration, the acid and base react in a 1:1 ratio according to the balanced chemical equation:
HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)
The endpoint of the titration is reached when all the HCl has reacted with the NaOH, and the solution becomes neutral. An indicator, such as phenolphthalein, is used to signal the endpoint of the titration, where the indicator changes color from pink to colorless. The volume of acid required to reach the endpoint is measured, and the concentration of NaOH is calculated using stoichiometry.
Standardizing the NaOH solution ensures that its concentration is accurately known, allowing it to be used in subsequent chemical reactions or analyses. It is important to standardize the NaOH solution periodically, as the concentration can change over time due to factors such as atmospheric carbon dioxide absorption, water absorption, or contamination.
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Hi how are you
what do you think about this
Answers
how do you write/ draw a Lewis structure for N?
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Lewis dot structure is given in photo .
What is lewis dot structure ?
A Lewis point structure is a type of diagram used to show the distribution of electrons within a molecule or ion. This structure was first introduced in 1916 by chemist Gilbert N. Lewis. The structure consists of dots representing electrons surrounding the chemical symbols of the atoms in the molecule, indicating the number of bonds each atom can form. The dots are placed in pairs around the element symbol and represent the valence electrons (the electrons at the outermost energy level) of that element. The number of valence electrons of an element can be obtained from the periodic table.
Lewis point structures are used to predict the number and type of bonds that form between atoms in a molecule and to predict the shape of the molecule. By connecting the points of different elements in a molecule, the lewis structure can be used to determine the bond order, or the number of bonds between two atoms. Information about bond order, combined with the arrangement of atoms in space, can be used to determine the molecular structure of a molecule.
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I am at the centre of the atom and contain both neutrons and protons. What am I?
and
Complete the sentence:
Atoms have no overall
charge because...
Answers
An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.
Answer:
Nucleus and atoms have no overall charge because each element has the same number of protons and electrons which cancel out each other.
How many significant figures are in 320001
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Which of the following statements is true about chemical reactions?
endothermic reactions absorb heat and exothermic reactions give off heat
exothermic reactions absorb heat and endothermic reactions give off heat
endothermic and exothermic reactions absorb heat
endothermic and exothermic reactions give off heat
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Which statement best describes one rule for determining the relative age of a rock layers
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Referring to the experiment in which the scientists studies how long it
takes a parachute of different sizes to fall to the ground. What is the
dependent variable? *
Answers
Answer:
different sizes of the parachute
Explanation:
this is what is being changed throughout the experiment
Why do ionic compounds include at least one metal?
Answers
Ionic compounds include at least 1 metal because metals need to donate electrons. (In ionic bonds one compound takes electrons, therefore you need a metal to donate electrons).
Otherwise, with two non-metals the compounds would likely share electrons.
Determine the number of molecules of SO3 and atoms of oxygen contained in 0.521 g of SO3.
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The number of molecules of SO3 and atoms of oxygen contained in 0.521 g of SO3 is 3.92 x 10²¹.
What are molecules?The molecules can be defined as a group of two or more atoms that form a smallest unit into which a pure substances can be divided and still retain the composition and chemical properties of that substances.
A molecule is formed when two or more atoms are connected with each other by the chemical bonds.
Mass = 0.521 g, molar mass = 80.06 g / mole and
Avogadro number = 6.022 x 10²³
Thus N = mass/molar mass x Avogadro number
= 0.521 / 80.06 x 6.022 x 10²³
= 3.92 x 10²¹ molecules of SO3
Thus, the number of molecules of SO3 and atoms of oxygen contained in 0.521 g of SO3 is 3.92 x 10²¹.
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Will mark brainliest!!
Answers
Answer:
I think its B im not sure
but i hope this helps
How many atoms in Ga2Se3
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A child has a balloon in his house in the air conditioning. He goes outside with the balloon on a hot day. What happens to the temperature of the gas and volume of the balloon?
Answers
Answer:
There would be an increase in temperature and corresponding increase in the volume of the balloon
Explanation:
Charles law is been here
Charles law states that the volume of a given mass of gas is directly proportional to the temperature in Kelvin, provided that the pressure on the gas is kept constant. Mathematically Charles law can be represented thus;
V∝ T
Where V is the volume of the gas and;
T is the temperature.
Relating Charles Law to the question
The child moved outside from the room, constant atmospheric pressure is maintained.The temperature of the room is lower than the temperature outside.From Charles law postulation, there would be an increase in volume because of the increased temperature, since our pressure is same.
A block of steel occupies a volume of 15.0 mL and weighs 120.75 g. What is its density?
Answers
The density of a block of steel is:
8.05g/mL.
The mass of a substance per unit of volume is that the definition of density. though the sign may represent the Latin letter D, it's most often accustomed represent density. Mass divided by volume is however density is mathematically outlined.
The units of mass divided by volume accustomed live density embody grammes per cm cube (g/cm3) and kilogrammes per liter .
The equation for density is d = M/V, wherever d represents density, M is mass, and V is volume.
As a result, so as to calculate density, we tend to should divide mass by volume.
The mass is one hundred 20.75 and therefore the volume is 15.0 ml.
Divided by 120.75/15.0
8.05g/mL is the density.
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how many milliliters of an aqueous solution of 0.235 m silver fluoride is needed to obtain 9.72 grams of silver fluoride ?
Answers
326.0266 milliliters of an aqueous solution of 0.235 m silver fluoride is needed to obtain 9.72 grams of silver fluoride.
Given data,
mass = 9.72 g
molar mass of iron fluoride = 126.866 g/mol
molarity = 0.235 m
Molarity = \(\frac{w_{solute} }{m_{solute} }\)×\(\frac{1000}{V}\)
0.235 = \(\frac{9.72}{126.866 g/mol}\)×\(\frac{1000}{V}\)
0.235 = 0.076616 × 1000 / V
0.235 = 76.6162/v
Volume = 326.0266 ml
A solution in which water serves as the solvent is called an aqueous solution. The most common way to represent it in chemical equations is to add (aq) to the appropriate chemical formula. For instance, the formula for a solution of table salt, or sodium chloride (NaCl), in water is Na+(aq) + Cl (aq). The word aqueous, which derives from the Greek aqua, denotes that anything is connected to, resembles, or is dissolved in water. Water is a common solvent in chemistry since it is a great solvent and abundant in nature. Since water is usually used as the experiment's solvent, unless otherwise stated, the term "solution" refers to an aqueous solution.
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During a process called photoact, ________ give up an electron as a part of the light-dependent reactions.
Answers
Answer:
Chloroplasts?
Explanation:
Analyzing Chemical Reactions
Student Guide
Assignment Summary
In this assignment, you will predict the products of a chemical reaction and explain why you made this prediction. You will use what you have learned about atoms, bonding, and the organization of the periodic table in your explanation. You will then review and revise your prediction and explanation based on some additional information.
Background Information
Atoms combine with other atoms to form chemical bonds. When atoms bond, electrons can be either shared, donated, or gained. The likelihood that an atom of one element will bond with an atom of another element is related to the number of valence electrons in each atom. For example, elements in Group 1A contain one valence electron, and elements in Group 7A contain seven valence electrons. Elements from these two groups are likely to bond with one another, as the one valence electron from the Group 1A element can be donated to the Group 7A element to complete its outer valence shell.
In general, metals, which have only a few valence electrons, form ionic bonds with nonmetals that have nearly full outer valence shells. In an ionic bond, one or more electrons are donated from the metal element to the nonmetal element. Nonmetals tend to form covalent bonds with other nonmetals by sharing one or more pairs of electrons.
Materials
1–2 sheets of paper
Colored pencils or markers
Assignment Instructions
Step 1: Prepare for the project.
a) Read the entire Student Guide before you begin this project.
b) Gather the materials you will need to complete this project.
Step 2: Predict the products of a chemical reaction.
a) Use your knowledge of atoms, bonding, and the periodic table to complete the chemical equation and predict the products of the chemical reaction on your paper. Label this equation “Initial Prediction.”
CH4 + O2 =
Step 3: Explain your prediction.
a) Write a few paragraphs predicting the products of the chemical reaction and explaining why you made this prediction. Your document should:
i. identify the products of the chemical reaction.
ii. explain why these are the products based on trends in the periodic table (the number of valence electrons, electronegativity, etc.).
iii. identify the types of bonds in the reactants and products.
iv. identify the number of each type of bond in the reactants and products.
v. identify the type of reaction.
b) Label these paragraphs “Initial Explanation.”
Step 4: Create Lewis dot diagrams.
a) Draw Lewis dot diagrams of the reactants and products on the paper with your chemical equation.
b) Select a different color to use for each element in the chemical reaction. Use your chosen color for the element’s symbol and for its valence electrons.
c) Label these diagrams “Lewis Dot Diagrams.”
Step 5: Review and revise your prediction and explanation.
a) First, review your initial prediction and explanation by comparing it to your Lewis dot diagrams. If the results of your Lewis dot diagrams are different from your initial prediction, you will need to revise your prediction and explanation. See Step 5d.
b) Next, review your prediction and explanation to determine whether they adhere to the law of conservation of mass. If they do not, you will need to revise your prediction and explanation so that mass is conserved. See Step 5d.
c) Finally, determine whether your explanation addresses trends in the periodic table and how they can be used to predict outcomes of chemical reactions. If it does not, you will need to revise your explanation to include a discussion of periodic trends and how they help predict the outcomes of chemical reactions. See Step 5d.
d) Write your revised chemical reaction on the same paper as your initial chemical reaction and your Lewis dot diagrams. Label the equation “Revised Prediction.” Write your revised explanation below your initial explanation in the same document. Label it “Revised Explanation.” Be sure that your revised explanation includes all of the information necessary to address Step 3b and
Steps 5a–c.
Answers
Answer:
Explanation:
Answer :
Reaction 1 : Add Zinc to Copper Sulfate.
Observations of Reactants : Zinc is in solid state and copper sulfate in aqueous state.
Predicted Type(s) of Reaction : Single-displacement reaction
Observations of Products : Copper is in solid state and zinc sulfate in aqueous state.
The balanced chemical reaction :
Types of reaction : Single-displacement reaction : It is a type of reaction in which a single element displaces another element in a compound.
Reaction 2 : Mix Potassium Iodide and Lead (II) Nitrate.
Observations of Reactants : Potassium iodide is in solid state and lead nitrate in aqueous state.
Predicted Type(s) of Reaction : Double-displacement reaction
Observations of Products : Lead iodide is in solid state and potassium nitrate in aqueous state.
The balanced chemical reaction :
Types of reaction : Double-displacement reaction : It is a type of reaction in which two reactants exchange their ions to form two new compounds.
Reaction 3 : Burn Copper Wire.
Observations of Reactants : Copper is in solid state and oxygen in gas state.
Predicted Type(s) of Reaction : Oxidation reaction
Observations of Products : Copper oxide is in solid state.
The balanced chemical reaction :
Types of reaction : Oxidation reaction : In a oxidation reaction, a substance gains oxygen.
Reaction 4 : Heat Sodium Carbonate.
Observations of Reactants : Sodium carbonate is in solid state.
Predicted Type(s) of Reaction : Thermal decomposition reaction
Observations of Products : Sodium oxide is in solid state and carbon dioxide in gas state.
The balanced chemical reaction :
Types of reaction : Thermal decomposition reaction : It is defined as the breaking down of a chemical compound due to heating.
Reaction 1: Single-displacement reaction.
Reaction 2: Double-displacement reaction.
Reaction 3: Oxidation reaction.
Reaction 4: Thermal decomposition reaction.
What is a chemical equation?A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
Reaction 1: Add Zinc to Copper Sulfate.
Observations of Reactants: Zinc is in a solid state and copper sulfate is in an aqueous state.
Predicted Type(s) of Reaction : Single-displacement reaction
Observations of Products: Copper is in a solid state and zinc sulfate is in an aqueous state.
The balanced chemical reaction :
Types of reaction: Single-displacement reaction.
It is a type of reaction in which a single element displaces another element in a compound.
Reaction 2: Mix Potassium Iodide and Lead (II) Nitrate.
Observations of Reactants: Potassium iodide is in a solid state and lead nitrate is in an aqueous state.
Predicted Type(s) of Reaction : Double-displacement reaction
Observations of Products: Lead iodide is in a solid state and potassium nitrate is in an aqueous state.
The balanced chemical reaction :
Types of reaction: Double-displacement reaction
It is a type of reaction in which two reactants exchange their ions to form two new compounds.
Reaction 3: Burn Copper Wire.
Observations of Reactants: Copper is in a solid state and oxygen is in the gas state.
Predicted Type(s) of Reaction : Oxidation reaction
Observations of Products: Copper oxide is in the solid state.
The balanced chemical reaction :
Types of reaction: Oxidation reaction
In an oxidation reaction, a substance gains oxygen.
Reaction 4: Heat Sodium Carbonate.
Observations of Reactants: Sodium carbonate is in a solid state.
Predicted Type(s) of Reaction : Thermal decomposition reaction
Observations of Products: Sodium oxide is in a solid state and carbon dioxide is in a gas state.
The balanced chemical reaction :
Types of reaction: Thermal decomposition reaction
It is defined as the breaking down of a chemical compound due to heating.
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True or false; A solution always contains only one solvent.
Answers
A solution is defined as a mixture of two or more substances, usually, a solute and a solvent, and the difference between these two are in quantity, solute represents the smallest amount and solvent will represent the highest amount, and while you can have more than one solute, you can only have one solvent for a solution. Therefore the statement is true
what is the concentration of h3po4 that is needed to neutralize 17.61 ml of 2.869 m naoh when 31.16 ml of h3po4 is used?
Answers
The concentration of H₃PO₄ that is needed to neutralize 17.61 ml of 2.869 m NaOH when 31.16 ml of H₃PO₄ is used is 0.540 M.
The balanced equation is given as :
H₃PO₄ + 3NaOH ------> Na₃PO₄ + 3H₂O
number of moles of NaOH = 0.0176 × 2.869
= 0.050 mol
moles of moles of H₃PO₄ needed = 0.050 / 3 =0.0168 mol
molarity of H₃PO₄ = moles / volume in L
= 0.0168 / 0.0311
= 0.540 M
Thus, The concentration of H₃PO₄ that is needed to neutralize 17.61 ml of 2.869 m NaOH when 31.16 ml of H₃PO₄ is used is 0.540 M.
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What conclusion did Rutherford draw from his gold-foil experiment? A. Almost all the mass of an atom is concentrated in the nucleus. B. Atoms contain three different subatomic particles. C. Electrons are tiny particles that carry a negative charge. D. The mass of a proton is nearly equal to the mass of a neutron.
Answers
Answer:
A. Almost all of the mass is concentrated in the nucleus.
Explanation:
Because when he shot the alpha particles towards the atoms, most passed through (which meant atom is mostly empty space), but some bounced back and such (which meant mass is concentrated in the nucleus.)
The reason they bounced is because alpha particles are postive and nucleus is positive as well, and we know positives don't attract, rather they repel thus they bounced.
At which temperature would air hold the LEAST water vapor?
A. 13°C (55°F)
B. 35°C (95°F)
C. 24°C (75°F)
D. 2°C (36°F)
Answers
Answer:
2°C
Explanation:
The answer is D because cooler air holds less water vapor than warmer air, and 2°C is the coldest choice, so there's your answer!
At 2°C (36°F) temperature would air hold the LEAST water vapour. Hence, option D is correct.
What is temperature?Temperature expresses hotness and coldness or a measure of the average kinetic energy of the atoms or molecules in the system.
At 2°C (36°F) temperature would air hold the LEAST water vapour because cooler air holds less water vapour than warmer air, and 2°C is the coldest choice.
Hence, option D is correct.
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What is a graph?
A graph is a _______________________ representation of the relationship between two quantities.
_______________________ variable (manipulated)
Controlled by experimenter
_______________________________ variable (responding)
Something we observe as the result of the experiment
Answers
*Visual
*Independent
*Dependent
Atoms are made up of?
Answers
Answer:
Atoms are made up of a nucleus, protons and electrons