Sugar is a compound made of the elements hydrogen, carbon, and oxygen. Which element is left on the spoon after the sugar is heated?

Answer:

The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus.

Answer:

it is a result of hydrogen bonds present within water molecules.

Explanation:

when the water is transformed to ice at zero degrees Celsius, the water molecules are in crystal lattice in a structure that has a lot of empty space around each molecule.

The amount of sulfur trioxide (SO3) produced when 1096.00 grams of oxygen (O2) react with excess sulfur dioxide (SO2) is 1522.67 grams.

To determine the amount of sulfur trioxide produced, we need to consider the balanced chemical equation for the reaction:

2SO2 + O2 → 2SO3

From the equation, we can see that the molar ratio between oxygen (O2) and sulfur trioxide (SO3) is 1:2. This means that for every 1 mole of O2, 2 moles of SO3 are produced.

To calculate the number of moles of O2, we divide the given mass (1096.00 grams) by its molar mass (32.00 g/mol):

moles of O2 = 1096.00 g / 32.00 g/mol

= 34.25 mol

Since the molar ratio between O2 and SO3 is 1:2, the number of moles of SO3 produced is twice the number of moles of O2:

moles of SO3 = 2 * moles of O2

= 2 * 34.25 mol

= 68.50 mol

Finally, we can convert moles of SO3 to grams using the molar mass of SO3 (80.06 g/mol):

grams of SO3 = moles of SO3 * molar mass of SO3

= 68.50 mol * 80.06 g/mol

= 5486.23 g

≈ 1522.67 g (rounded to two decimal places)

When 1096.00 grams of O2 react with excess SO2, approximately 1522.67 grams of SO3 are produced.

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When the temperature is decreased to 150 K while keeping the pressure constant at 1.5 atm, the new volume would be 1.15 L. The volume decreases from the initial volume of 2.3 L to the new volume of 1.15 L.

According to the ideal gas law, the relationship between pressure (P), volume (V), and temperature (T) of a gas is given by;

PV = nRT

Where; P = pressure (in atm)

V = volume (in liters)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature (in Kelvin)

In this case, the pressure is constant at 1.5 atm. The initial temperature is 300 K, and the initial volume is 2.3 L. The chemist then decreases the temperature to 150 K while keeping the pressure constant.

To determine the new volume, we can use the combined gas law, which relates the initial and final conditions of pressure, volume, and temperature;

(P₁ × V₁) / T₁ = (P₂ × V₂) / T₂

Substituting the given values;

(1.5 atm × 2.3 L) / 300 K = (1.5 atm × V₂) / 150 K

Simplifying the equation;

(1.5 × 2.3) / 300 = 1.5 × V₂ / 150

0.0115 = 1.5 × V₂ / 150

V₂ = (0.0115 × 150) / 1.5

V₂ = 1.15 L

Therefore, the new volume would be 1.15 L.

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The volume of the second portion is 3.75 liters. To solve this problem, let x represent the volume of the second portion. We can then set up the equation

A mathematics statement that expressions are equal is known as an equation. It consists of two expressions separated by an equals sign, and the expressions on either side can be numbers, variables, or a combination of both. Equations are used to solve problems in mathematics, science and engineering, and are fundamental to the study of these disciplines. Equations can be used to describe relationships between different elements of a system, such as the force of gravity on a falling object or the momentum of a moving object. Solving equations involves manipulating the equation to find the values of the unknown variables, and this process is called solving the equation.

4x = 15.0
Solving for x, we get:
x = 15.0 / 4
x = 3.75
Therefore, the volume of the second portion is 3.75 liters.

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Answer:In the case of an electric bulb, the electrical energy is converted to light and heat. The amount of electrical energy put into a bulb = the amount of light energy (desirable form) plus the heat energy that comes out of the bulb

Explanation:

Just trust me

Answer:

A type of energy

Explanation:

Answer:

A. Do not change their energy level.

Explanation:

The process in which a solid changes directly to a gas is called sublimation. It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Dry ice (solid carbon dioxide, CO2) is an example of a solid that undergoes sublimation.

The best description of a chemical bond is A: "A chemical bond holds atoms together."

A chemical bond refers to the force of attraction between two or more atoms that holds them together to form a stable chemical compound. Atoms bond together by sharing, gaining, or losing electrons, resulting in the formation of molecules or compounds.

Chemical bonds are essential for the formation of substances and play a crucial role in determining the properties and behavior of matter. They involve the interaction of valence electrons, the outermost electrons in an atom, which are responsible for chemical bonding.

In summary, option A provides the most accurate and comprehensive description of a chemical bond, emphasizing its role in holding atoms together to form stable compounds. Therefore, Option A is correct.

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Cobalt (Co) is a transition metal element that is present in every cell of the human body in Vitamin B12.

The ground-state electronic configuration of the cobalt atom, present in the human body, is A: 1s2 2s22p6 3s2 3p6 4s2 3d7.

The electron configuration for the Co2+ ion is B: 1s2 2s22p6 3s2 3p6 3d7,

and the electron configuration for the Co4+ ion is C: 1s2 2s22p6 3s2 3p6 3d5.

The noble gas that may be used to abbreviate and shorten these configurations is Argon.

The possible explanation for the electronic configuration of Co3+ is the A. half-filled orbitals.

Explanation:

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Answer:

MnCl₂ → manganese (ll) chloride

MnO₂ → manganese (IV) oxide

Hope that helps.

Number of electrons = Atomic number of a neutral atom,

therefore number of electrons in atom having atomic number of 11 = 11

final output - nb. of electrons = 11

Answer:

Coefficients

Answer:

well what is the question

Explanation:

meaning for define matter:

physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.

"the structure and properties of matter

define matter in chemistry:

In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume.

maybe it will helpful if wrong sorry

The plants which have a fibrous root system are

A fibrous root system is a root system which consists of large mass of roots of nearly equal size

Some few examples of plants with fibrous roots system are as follows:

In conclusion; the plants which have a fibrous root system are grasses and corns.

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Answer:

➢There are different ways to trigger the conversion of diamond to graphite, for instance by simply heating the diamond under exclusion of oxygen or even with an aimed mechanical stroke.

Explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

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The molecular equation for the reaction between hydrochloric acid and calcium carbonate can be written as:

HCl + CaCO3 → CaCl2 + CO2 + H2O

Hard water is water that contains a high concentration of dissolved minerals, specifically calcium and magnesium ions. These minerals are picked up by the water as it flows through soil and rocks, such as limestone, chalk, or gypsum.

The degree of water hardness is usually measured in parts per million (ppm) of calcium carbonate. Water with a concentration of calcium carbonate between 60-120 ppm is considered moderately hard, while water with a concentration above 120 ppm is considered hard.

The molecular equation for the reaction between hydrochloric acid and calcium carbonate can be written as:

HCl + CaCO3 → CaCl2 + CO2 + H2O

In this reaction, the hydrochloric acid (HCl) reacts with the calcium carbonate (CaCO3) to produce calcium chloride (CaCl2), carbon dioxide (CO2) gas, and water (H2O). The bubbling and fizzing observed during the reaction is due to the release of carbon dioxide gas.

Therefore, base on the equation HCl + CaCO3 → CaCl2 + CO2 + H2O  calcium chloride and water produced are both soluble in water and do not contribute to the hard water deposit.

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The actual volume of water measured out is 10.012 mL.

To determine the actual volume of water, we can use the density formula: density = mass/volume.

Rearranging the formula to solve for volume, we get: volume = mass/density.

Plugging in the given values, we get:

volume = 9.990 g / 0.9978 g/mL = 10.012 mL.

Therefore, the actual volume measured out is slightly greater than the nominal volume of 10 mL, likely due to the meniscus formed by the water at the top of the pipet. This highlights the importance of proper measurement techniques and accounting for sources of error in experimental measurements.

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Answer:

B water density increases and rises to the top of the sea

Explanation:

i took a test and got it correct lol

Answer:

There are many benefits to being fit.

Explanation:

Fitness isn't just about the physical part but also the mental wellbeing. For example the physical involves exercising, not just to lose weight or look more beautiful (remember everyone has unique looks) but to live longer, reduce the rick of diseases such as heart diseases and to enhance our bodies. Whereas the mental has to do with the brain, how you train the brain e.g logic puzzles, riddles and so on.

Answer:

Expiremental group for -first one.    Second one-2

Explanation:

I Had Those QuestIons On mY tEsttt!!

The concept that living organisms arise from nonliving material is called spontaneous generation, also known as abiogenesis or autogenesis.

Spontaneous generation theory suggests that life can emerge spontaneously from inanimate matter under certain conditions. It was widely accepted for many centuries until the experiments conducted by Louis Pasteur and others in the 19th century provided evidence to refute it. These experiments demonstrated that living organisms only arise from pre-existing life through processes such as reproduction.

The principle of biogenesis, which states that life originates from other living organisms, replaced the concept of spontaneous generation in modern biology. This understanding is supported by the observation of the continuity of life through the transfer of genetic material from parent to offspring, as well as the presence of complex biological processes and structures that require specific genetic instructions.

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Answer:

a. He is as wise as his sister. (change into Negative)

⇒Neither he is wise nor his sister.

b. He put the cup on the shelf. (change into interrogative)

⇒Did he put the cup on the shelf?

c. He said to her. Will you play tomorrow? (change into indirect)

⇒He asked me that whether I play the next day.

d. Doctors cure patients. (Change into passive)

⇒Patients were cured by doctors.

e. She (not eat) yet. (Rewrite it using correct tense)

⇒she hadn't eaten yet.

f. Everybody has eaten..............? (use correct question tag)​

⇒Everybody has eaten, haven't they?

Answer:

B has highest stability

Explanation:

as its octet is complete

plz mark brainliest if it helps

The frequency and intensity of gas-gas collisions are measured by gas pressure. 1 Atm is equivalent to 760 Torr, 760 mmHg, 101.325 kPa, 101,325 Pa, 14.7 lb/in2, and 29.92 inHg.

A Brief Glance at Quantity. When referring to a single word that CANNOT be measured, use the word amount. – When referring to the a plural or singular term that CAN be tallied, use number. – When speaking to an inanimate, singular or plural word that CAN be numbered or measured, quantity should be used.

There are two types of physical quantities. Qualities might be derived or basic. Quantities that cannot be represented in terms of any physical quantities are referred to as foundational or base quantities. They are size, mass, time, and space.

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Al³⁺ is an ion which has  larger hydration energy in magnitude  as the charge is greater on the ion.

An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.

Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.

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Both solid and liquid wastes need to be transported in different ways because they both have different properties and characteristics.

solid and liquid wastes need to be disposed of in different ways as the liquid wastes are in a liquid nature and have to be transported into closed containers where as the solid are of solid nature and they require open trucks to transport them. It is important to do solid waste management so that there can be hygiene around the environment and fresh air is available.

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Answer:

When you are in the laboratory and take a direct sniff the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When its necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air towards your face.

Gas is a naturally odourless substance, but the completely harmless artificial smell is added to make it more detectable. The substance is called mercaptan and gives off a strong sulphur like smell.

The following presents the correct order of buttons to press on a scientific calculator to enter 2.8 107 is[2] [8] [EE] is 2.8×10⁷

In the scientific calculator it is an electronic calculator either desktop or handheld used to design to perform mathematical operation

Here given data is  2.8 107

And in the scientific calculator the EE means the raise to power it means in the given question 2.8 107 means the 10 raise to power it means correct numbers is  2.8×10⁷ and it is come only in the scientific calculator and the correct order to press the button is [2] [8] [EE]

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