Why do cells need homeostasis?
Answers
Answer:
Cells need to maintain homeostasis in order for our body to be healthy and fully functional. If the internal conditions of our cells are not stable, then the normal cell functions would be disrupted.
Explanation:
Related Questions
Atoms of an element, X, have the electronic configuration shown below.
The compound most likely formed with magnesium, Mg, is:
(A) MgX
(B) Mg2X
(C) MgX2
(D) Mg3X2
Answers
The compound most likely formed with magnesium, Mg, is MgX . The correct option is (A) MgX.
The electronic configuration of the element, X is 2,8,7. Since X is located in group 7 of the periodic table, it has 7 electrons in its valence shell. In order to obtain a stable configuration, the atom can either gain one electron to fill the 3rd energy level completely or lose seven electrons to completely empty the 2nd energy level, which is easier. The resulting ion, X-, would have a stable electronic configuration of 2,8. Hence, the compound most likely formed with magnesium, Mg, is MgX .The correct option is (A) MgX.
Explanation: Magnesium is located in group 2 of the periodic table and has two valence electrons in its outermost shell. It loses these two electrons to form Mg2+ ions with stable electronic configurations of 2,8. On the other hand, element X gains an electron to form X- ions with stable electronic configurations of 2,8.The combination of Mg2+ and X- ions results in the formation of the compound MgX with a neutral charge.
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what is the atomic number of an element based on
Answers
Answer:
The atomic number is the number of protons in the nucleus of an atom . The number of protons define the identity of an element
What type of adaptations are these? Compare and contrast the adaptations of the Dart Frog and the
Hosta Plant. Your answer should be 3–4 sentences long.
Answers
The dart frog and hosta plant have different types of adaptations. The dart frog has physical adaptations such as bright colors, toxic skin, and webbed feet that help it survive in its environment.
These adaptations protect the frog from predators and enable it to move easily through its habitat. In contrast, the hosta plant has physiological adaptations such as the ability to tolerate shade and grow in moist soil. These adaptations help the plant to survive in its environment by conserving water and maximizing photosynthesis in low-light conditions. Overall, while both species have evolved adaptations to survive in their respective environments, the type of adaptations they have developed differ depending on their specific needs and challenges in their habitats.
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if 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction
Answers
The ionic compound sodium chloride, also referred to as salt, has the chemical formula NaCl, which denotes a 1:1 ratio of the ions sodium and chloride. The molar weights of 39.34 g Na and 60.66 g Cl in 100 g of NaCl are 22.99 and 35.45 g/mol, respectively.
If 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction?
116.89 g – 45.98 = 70.91 g of chlorine must have been used.
The characteristics of sodium and chlorine are as follows:
Water and sodium react violently.The gas chlorine is toxic.Soft and silvery-white sodium metal.Metals are corrosive to chlorine gas.The characteristics of the chemical sodium chloride are as follows:
in water dissolves.Non-poisonous.both crystalline and whiteIn light of this, it may be said that sodium chloride possesses wholly unique properties from those of sodium and chlorine.
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When chlorine gas comes into contact with magnesium metal at high temperatures, solid magnesium chloride is created. Classify this reaction.
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The formation of solid magnesium chloride (MgCl₂) by the reaction between chlorine gas (Cl₂) and magnesium metal (Mg) at high temperatures is classified as a synthesis reaction or a combination reaction.
Synthesis reactions involve the combination of two or more substances to form a single product. In this case, chlorine gas and magnesium metal combine to produce magnesium chloride as the sole product.
The balanced chemical equation for this synthesis reaction is:
Mg + Cl₂ ⇒ MgCl₂
Hence, the reaction between chlorine gas and magnesium metal to form solid magnesium chloride indicates a synthesis reaction, as the elements combine to form a compound.
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What must occur before a newly made polypeptide is secreted from a cell?.
Answers
Answer: Your answer is Its signal sequence must target it to the ER, after which it goes to the Golgi.
Hope this helps!
Which best describes a compound such as sodium chloride?
a pure substance that can be separated into different elements by physical means
a mixture of two common substances that can be separated by chemical means
a mixture of two common elements that can be separated by physical means
a pure substance that can be separated into different elements by chemical means
Answers
Answer:
i think it is the last option a pure substance that can be separated into different elements by chemical means
Explanation:
is this correct im so confused.
Answers
Answer:
the last option!!!!
Explanation:
because its right
Through bonding, atoms are able to attain the same electron configuration as a(n)?
Answers
The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration
What is electron configuration?The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also known as electronic structure or electron configuration. As follows: 1s will be filled first, with a maximum of 2 electrons, followed by 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, and 5p. The Aufbau Principle, the Pauli-Exclusion Principle, and Hund's Rule are a set of three guidelines we must adhere to while allocating electrons to orbitals. To determine the valence electrons of an atom, electron configurations assist us to understand the chemical behavior of elements. The shell number (n), kind of orbital, and superscript indicating the number of electrons in the orbital are the first three symbols used to represent the electron configuration.
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For a particular experiment, Nadia must measure the following quantities: The mass and volume of a liquid sampleThe temperature of the liquid every 0.5 seconds for 3 minutesstopwatchelectronic balancegraduated cylinderrulerthermometer
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The quantities that Nadia must measure for a particular experiment include the mass and volume of a liquid sample,
The temperature of the liquid every 0.5 seconds for 3 minutes, a stopwatch, an electronic balance, a graduated cylinder, a ruler, and a thermometer.
Nadia must measure the following quantities for a particular experiment:Mass and volume of a liquid sampleTemperature of the liquid every 0.5 seconds for 3 minutesStopwatchElectronic balanceGraduated cylinderRulerThermometerThese are the quantities Nadia must measure for a particular experiment.
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A lump of zinc is tossed into a beaker of 500L of 14M hydrochloric acid. this reaction produces Hydrogen Gas and zinc (II) chloride. If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, what is the mass of the zinc?
Answers
If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .
Using the ideal gas law equation:
PV = nRT
n = (PV) / (RT)
= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)
= 42.71 moles
the balanced equation for the reaction between zinc and hydrochloric acid:
Zn + 2HCl -> \(ZnCl_{2}\) + \(H_{2}\)
1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.
The molar mass of zinc is 65.38 g/mol.
Mass of zinc = moles of zinc * molar mass of zinc
= 42.71 moles * 65.38 g/mol
= 2796.96 g
Therefore, the mass of the zinc is 2796.96 grams.
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PLS HELP I WILL GIVE BRAINLIST.
Mercury has a density of 13.6 g/cm³. Which of these materials will float in mercury? Check all that apply.
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
gold, density: 19.3 g/cm³
uranium, density: 18.7 g/cm³
lead, density: 11.3 g/cm³
Answers
Answer:gold iron and uranium
Explanation:
Answer:
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
lead, density: 11.3 g/cm³
Explanation:
other ones wrong
5. When argon was discovered, it was placed between chlorine and potassium, even though the periodic
table at that time was organized by increasing atomic weight. Why did scientists choose to place argon
before potassium?
Answers
Determine the hydrogen ion concentration and the hydroxide ion concentration in acidic wastewater having a pH of 3.2. b) A livestock and crop farmer uses some acidic wastewater to irrigate his soil before growing crops as he believes it kills all the insects and deters pests. Some of the runoff fills a drinking basin for his livestock. Advise him on the risks of using the wastewater in his operation and find a sustainable farming practice to reduce pests on his site without the use of pesticide
Answers
The pH of acidic wastewater is 3.2, indicating a high concentration of hydrogen ions and a low concentration of hydroxide ions. This suggests that the wastewater is highly acidic.
Using acidic wastewater for irrigation can have several risks. Firstly, it can negatively affect the pH balance of the soil, making it less suitable for crop growth. Additionally, the high concentration of hydrogen ions in acidic wastewater can lead to toxicity in plants, potentially damaging their roots and inhibiting their overall growth. Moreover, if the runoff from the wastewater fills a drinking basin for livestock, it can be harmful to their health, as animals are sensitive to the quality of the water they consume.
To reduce pests on the farmer's site without the use of pesticides, an alternative sustainable farming practice can be employed. Integrated Pest Management (IPM) techniques can be implemented, which focus on prevention, monitoring, and control of pests through biological, cultural, and physical methods. This includes practices such as crop rotation, habitat manipulation, companion planting, and the use of beneficial insects. By implementing IPM, the farmer can reduce pests effectively while minimizing the risks associated with the use of pesticides and harmful wastewater.
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A 10.00 mL diluted chloride sample was titrated with 0.02749 M AgNO3, and 16.51 mL AgNO, was required to reach the endpoint. How would the following errors affect the calculated concentration of CI? a. The student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M. The experimentally calculated moles of Ag would be too! calculated [CI] in the unknown would come out too b. The student was past the endpoint of the titration when the final buret reading was taken. v The experimentally determined moles of Ag would be too | calculated C1 concentration. so the calculated moles of CI would come out too so the calculated moles of CI would come out ✓ The as would the
Answers
The effect of errors on the calculated concentration of CI is significant.
A 10.00 mL diluted chloride sample was titrated with 0.02749 M AgNO3, and 16.51 mL AgNO, was required to reach the endpoint. The effect of errors on the calculated concentration of CI can be explained as follows:a. The student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M. If the student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M, then the experimentally calculated moles of Ag would be too high. Consequently, the calculated [CI] in the unknown would come out too low. b.
The student was past the endpoint of the titration when the final buret reading was taken. If the student was past the endpoint of the titration when the final buret reading was taken, then the experimentally determined moles of Ag would be too low. This would cause the calculated C1 concentration to come out too high. Consequently, the calculated moles of CI would come out too high. Therefore, the effect of errors on the calculated concentration of CI is significant.
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How many significant figures are in the following number?
3.40 X 10-6
Answers
Answer:
(2.68 x 10^22 atoms) x (238 g U / 6.022 x 10^23 atoms) = 10.59 g of U.
The number least significant figures in the multiplication and division problem is 3 significant figures (2.68). So, following significant figure rules for multiplication, your answer should have 3 significant figures.
The final answer is: 10.6 g U
Explanation:
Hopefully this helps :)
A solution made by dissolving 25. 0 mg of insulin in 5. 00 mL of water has an osmotic pressure of 15. 5 mmHg at 25°C. Calculate the molar mass of insulin. (Assume that there is no change in volume when the insulin is added to the water and that insulin is a non-dissociating solute. )
Answers
The molar mass of insulin is approximately 0.798 g/mol, calculated using the equation for osmotic pressure and the given values of mass and volume.
To calculate the molar mass of insulin, we can use the equation for osmotic pressure:
π = (n/V)RT
where π is the osmotic pressure, n is the number of moles of solute, V is the volume of the solution in liters, R is the ideal gas constant, and T is the temperature in Kelvin.
First, convert the given values to appropriate units:
25.0 mg = 0.025 g
5.00 mL = 0.005 L
Next, rearrange the equation to solve for n (number of moles):
n = (πV) / (RT)
Substituting the given values:
n = (15.5 mmHg * 0.005 L) / ((0.0821 L·atm/(mol·K)) * 298 K)
Calculate n:
n ≈ 0.0313 mol
Finally, divide the mass of insulin (0.025 g) by the number of moles (0.0313 mol) to find the molar mass:
Molar mass = 0.025 g / 0.0313 mol
Molar mass ≈ 0.798 g/mol
So, the molar mass of insulin is approximately 0.798 g/mol.
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Consider 0.40 mol of dilute carbon dioxide at a pressure of 0.50 atm and a volume of 50 l. what is the internal energy of the gas?
Answers
The internal energy of the gas is 10 J.
The internal energy of an ideal gas can be calculated using the equation U = (3/2) * n * R * T, where U is the internal energy, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.
Given:
n = 0.40 mol
P = 0.50 atm
V = 50 L
To calculate the temperature, we can use the ideal gas law: PV = nRT.
Rearranging the equation, we get:
T = (P * V) / (n * R)
Substituting the given values, we have:
T = (0.50 atm * 50 L) / (0.40 mol * 0.0821 L·atm/(mol·K))
Calculating T, we find:
T ≈ 305.68 K
Now, we can calculate the internal energy using the equation:
U = (3/2) * n * R * T
Substituting the values, we get:
U = (3/2) * 0.40 mol * 8.314 J/(mol·K) * 305.68 K
Calculating U, we find:
U ≈ 10 J
The internal energy of the gas is approximately 10 J.
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You go fishing and obtain some less weights for your trip. Lead’s density is 11.34 g/mL. If there are 50 weights in a 250 mL box, what is the mass of each weight?
Answers
Answer:
Mass of each weight = 56.7 gram per piece
Explanation:
Given:
Lead’s density = 11.34 g/mL
Number of weights = 50
Volume of box = 250 mL
Find:
Mass of each weight
Computation:
Mass = volume x density
Mass = 250 x 11.34
Mass = 2,835 gram
Mass of each weight = Total Mass / Number of weights
Mass of each weight = 2,835 / 50
Mass of each weight = 56.7 gram per piece
someone please give me a sentence using “chemical bond”
Answers
Answer:
Rust, iron oxide, is weak mechanically although its chemical bonds are strong.
Explanation:
HELP ASAP
Under which condition is competition among lions least likely?
when there is minimal rainfall in the area
when there are fewer producers in the area
when there are large numbers of lions
when there is a large antelope population
Answers
Answer:
D, when there is a large antelope population
Explanation:
I took the k12 test and got it right
How are atoms and elements related?
Please explain with full and clear sentences. Thank you! :)
Answers
Answer:
closely related
Explanation:
Elements are substances containing of one type of atom, (e.g carbon element is made up of carbon atoms) . Atoms are the smallest particles into which an element can be devided.Name 5 scientists that contributed to the development of the periodic table with the year.
Answers
Explanation:
Antoine-Laurent de Lavoisier, Johann Wolfgang Döbereiner, John Newlands, Julius Lothar Meyer, Dmitri Mendeleev, Glenn T.
Compare and contrast a solution and a suspension
Answers
The difference between a solution and a suspension is in the particle sizes involved. A solution is a mixture of ions or molecules (very, very small). Solutions are transparent, meaning that you can see through them. A suspension has bigger particle sizes and so it may look cloudy or murky
From the pictures above, how many processes would have NO EFFECT on the temperature of a room?
A)1
B)2
C)3
D)4
Answers
Answer:
b, talking generates no heat and doesn't take away heat
during conduction heat is transferred by the movement of currents within a fluid true or false
Answers
Answer:
True i think
Explanation:
Answer:
Yes
Explanation:
Water is an example because heat touches the bottom of the sea without being nullified
A student prepares four different aqueous NaCl solutions according to the table. Which solution will have the highest molarity?
Answers
Brainly is erroneously blocking my answer from being posted due to nonexistent profanity and/or links, so I have attached an image of my written response. Please let me know if you have any problems seeing it.
Consider the chemical equation. 2NBr3 + 3NaOH Right arrow. N2 + 3NaBr + 3HOBr If there are 40 mol of NBr3 and 48 mol of NaOH, what is the excess reactant?
Answers
Answer:
NBr₃ is the excess reactant.
Explanation:
2NBr₃ + 3NaOH → N₂ + 3NaBr + 3HOBrWe can solve this problem by calculating how many moles of NaOH would react completely with 40 moles of NBr₃, using the stoichiometric coefficients of the reaction:
40 mol NBr₃ * \(\frac{3molNaOH}{2molNBr_3}\) =60 moles NaOHAs the required number of NaOH moles is higher than the available number (60 required vs 48 available), NaOH is the limiting reactant.
As such, the excess reactant is NBr₃.
create a bar graph that shows the total yearly precipitation for elkhart kansas
Answers
The total yearly precipitation for elkhart kansas is attached in the form of graph below.
What is precipitation?Precipitation is defined as any liquid or frozen water which forms in the atmosphere and then gets received on Earth.It is one of the most important steps of the water cycle.
Precipitation takes place in form of clouds when water vapor gets accumulated in clouds and they get bigger and heavy, when the clouds become heavy enough they fall to the land in the form of rain.f a cloud is present at higher altitudes , the water present in the clouds freezes and fall to the ground in form of snow,hail.
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I WILL GIVE BRAINLIEST !!!
Answers
Answer:
The purple are molarity and the green are molality
Explanation:
I think dont kill me if thats wrong