In your own words, explain what’s happening here. I need help please!!

H2+O2+H2O

The amount of heat needed to raise the temperature of 355 g of ethanol by 63°C is approximately 53,856 joules.

To calculate the amount of heat needed to raise the temperature of a substance, we can use the equation:

Q = mcΔT

Where:

Q is the heat (in joules),

m is the mass of the substance (in grams),

c is the specific heat capacity of the substance (in J/g·°C),

ΔT is the change in temperature (in °C).

Given:

Mass of ethanol (m) = 355 g

Specific heat capacity of ethanol (c) = 2.4 J/g·°C

Change in temperature (ΔT) = 63°C

Let's substitute these values into the equation and calculate Q:

Q = (355 g) * (2.4 J/g·°C) * (63°C)

Q ≈ 53,856 J

Therefore, the amount of heat needed to raise the temperature of 355 g of ethanol by 63°C is approximately 53,856 joules.

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Moles of Lithium phosphate : 0.495

Given

6 Li + Zn₃(PO₄)₂ ------- > 2 Li₃PO₄ + 3 Zn

Required

Moles of Lithium phosphate

Solution

moles of Zinc(Ar=65,38 g/mol) :

= mass : Ar

= 48.6 : 65.38

= 0.743

From equation, mol ratio of Zn :  Li₃PO₄ = 3 : 2, so mol  Li₃PO₄ :

= 2/3 x mol Zn

= 2/3 x 0.743

= 0.495

The beaker that best represents a saturated solution is the one in which the solution is at its maximum level of solubility, meaning it cannot dissolve any more solute at the same temperature.

Saturated solutions are solutions in which no more solute can dissolve in the solvent at the same temperature. A solution is a homogeneous mixture composed of a solvent and a solute.

The solvent is the major component of the solution, and the solute is the minor component. The solute dissolves in the solvent to create a homogeneous solution.

A solution is said to be saturated when it has the maximum amount of solute that can dissolve in it at the same temperature. If the temperature changes, the solubility of the solute will also change, and the solution will become unsaturated or supersaturated.

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Answer:

something that triggers

Explanation:

a catalyst helps move a reaction along

A catalyst shows some specificity in its action. It speeds up only a spontaneous reaction. The best definition of catalyst is something that triggers. The correct option is C.

A substance which increases the rate of a chemical reaction without itself undergoing any permanent change chemically or quantitatively is defined as the catalyst and the phenomenon is called catalysis.

It is believed that a catalyst actually participates in the chemical reaction that is speeds up. It forms temporary bonds with the reactants yielding an intermediate activated complex.

A typical example of catalyst is iron (Fe) which is used in the Haber process for the manufacture of ammonia. The catalyst is recovered unchanged in amount and chemical composition at the end of the reaction.

In most cases, a small amount of a catalyst can speed up reaction between large amounts of reactants. A catalyst shows maximum efficiency at optimum temperature.

Thus the correct option is C.

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Answer:

2.5 billion years

Explanation:

Answer:In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. ... In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process. Carbon dioxide and water are products of this reaction.

Explanation:

Answer:

10.554 amu

Explanation:

X1 has 10 amu with 72.3%

X2 has 12 amu with 100 - 72.3 = 27.7%

So average mass = 10(72.3%) + 12(27.7%)

= 10(0.723) + 12(0.277)

= 7.23 + 3.324

= 10.554 amu

Answer: 5.00

Explanation:

Frequency of a radiation is the ratio of speed of light to the wavelength of the radiation. The frequency of radiation with a wavelength of 0.500 cm is  6 × 10¹⁰ s⁻¹.

Frequency of a radiation is the number of waves travelled per second. The relation between wavelength and frequency is given below:

\(\nu = \frac{c}{\lambda }\)

here, c is the speed of light equal to 3 × 10⁸ m/s and lambda be the wavelength.

Therefore, the frequency of the radiation is calculated as follows:

frequency = 3 × 10⁸ m/s / 0.005 m

                 = 6 × 10¹⁰ s⁻¹

Hence, frequency of radiation is 6 × 10¹⁰ s⁻¹.

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The exercise requires you to complete the sentences using the drop down. The complete sentences are given below.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\ \)

From the question.

density = 0.017 g/mL

mass = 4 g

We have

\(volume = \frac{4}{0.017} \\ = 235.2941176...\)

We have the final answer as

Hope this helps you

Answer:

They're considered nonrenewable because they take millions of years to develop. They can't be renewed as fast as we're taking them.

A rigid container holds 2.60 mol of gas at a pressure of 1.00 atm and a temperature of 20.0 °C. The container's volume is 62.4 L.

To find the container's volume, we need to use the ideal gas law which states that PV = nRT where :

P is pressure

V is volume

n is the number of moles of gas

R is the gas constant

T is temperature.

We can rearrange the equation to solve for V as follows : V = (nRT)/P

We are given n = 2.60 mol, P = 1.00 atm, T = 20.0°C = 293 K (remember to convert Celsius to Kelvin by adding 273), and R = 0.0821 L·atm/(mol·K).

Plugging in these values and solving for V, we get :

V = (2.60 mol)(0.0821 L·atm/(mol·K))(293 K)/(1.00 atm) = 62.4 L

Therefore, the container's volume is 62.4 L.

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Answer: 1/4

Explanation:

2.4/0.09=2  

1=1/2

2=1/4

3=1/8

So therefore because we got 2 , so it will be 1/4.

The reaction has a heat of 161.1 kJ/mol.

If 250 mL of a NaOH solution contain 1 milligrams of NaOH, the solution's molarity is 10-4 M. The amount of solute in 1 litre of solution is known as the molarity.

We can use the following formula to get the reaction's heat:

Q = m × c × ΔT

The total volume of the mixture is 500.0 mL because we are aware that the volume of each solution is 250.0 mL:

m = V × ρ

m = 500.0 mL × 1.025 g/mL

m = 512.5 g

The change in temperature must then be calculated:

ΔT = (48.8°C - 2.0°C) = 46.8°C

Assuming that the acid used is HCl and the base used is NaOH, their molar masses are:

HCl: 1 mol of HCl = 36.46 g/mol

NaOH: 1 mol of NaOH = 40.00 g/mol

The reaction between HCl and NaOH has the following chemical formula:

HCl + NaOH → NaCl + H2O

As can be seen, the reaction's stoichiometry is 1:1, which means that 1 mole of HCl combines with 1 mole of NaOH.

So, the following formula can be used to determine the reaction's heat:

Q = m × c × ΔT

Q = 512.5 g × 4.190 J/goC × 46.8°C

Q = 100,697 J or 100.697 kJ

Since both solutions have a 2.500 M molarity, the number of moles of either HCl or NaOH can be determined as follows:

moles = M × V

moles = 2.500 mol/L × 0.2500 L

moles = 0.6250 mol

Therefore, the heat of the reaction is:

Q/mol = Q / moles

Q/mol = 100.697 kJ / 0.6250 mol

Q/mol = 161.1 kJ/mol

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The amount of heat to be removed to change 25 grams pf water vapor at 125 C to ice at -10 is 1182.5 J.

The process of changing water vapor at 125°C to ice at -10°C involves two steps:

Step 1: Cooling water vapor at 125°C to liquid water at 100°C

The amount of heat to be removed can be calculated using the formula:

Q = m × c × ΔT

where Q is the heat energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

The mass of water vapor is not given, so we cannot calculate the heat required to cool it to 100°C.

However, we know that the water vapor will condense into liquid water at 100°C, and the heat of vaporization will be released.

Step 2: Removing heat of vaporization to convert liquid water at 100°C to ice at -10°C

The amount of heat to be removed can be calculated using the formula:

Q = m × ΔHf + m × c × ΔT

where Q is the heat energy, m is the mass, ΔHf is the heat of fusion, c is the specific heat capacity, and ΔT is the change in temperature.

Given:

Mass of water vapor = 25 g

Initial temperature of water vapor = 125°C

Temperature of ice = -10°C

Heat of fusion of water = 334 J/g

Specific heat capacity of water = 4.18 J/(g·°C)

Step 1:

The water vapor will condense into liquid water at 100°C, releasing heat of vaporization:

Q1 = 25 g × 40.7 J/g = 1017.5 J

Step 2:

The liquid water at 100°C must be cooled to 0°C, then frozen to ice at -10°C:

Q2 = (25 g × 4.18 J/(g·°C) × (0°C - 100°C)) + (25 g × 334 J/g)

Q2 = -10,550 J + 8350 J = -2200 J

The total amount of heat to be removed is the sum of Q1 and Q2:

Qtotal = Q1 + Q2 = 1017.5 J - 2200 J = -1182.5 J

Therefore, 1182.5 J of heat must be removed to change 25 grams of water vapor at 125°C to ice at -10°C.

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We must ascertain the molar mass of glyceryl trimyristate and the stoichiometric ratio of the reactants and products in the saponification reaction in order to calculate the maximum mass of sodium soap that may be produced from 195 g of glyceryl trimyristate.

The saponification of glyceryl trimyristate with sodium hydroxide (NaOH) produces three molecules of sodium soap and one molecule of glycerol:

Glyceryl trimyristate + 3 NaOH → 3 sodium soap + glycerol

The molar mass of glyceryl trimyristate is calculated as:

3 (myristic acid molar mass) + (glycerol molar mass) = 3 (228.39 g/mol) + 92.09 g/mol = 913.26 g/mol

The stoichiometric ratio of the reactants and products is 1:3, which means that for every one mole of glyceryl trimyristate, three moles of sodium soap are produced.

To calculate the maximum mass of sodium soap that can be prepared, we need to convert the given mass of glyceryl trimyristate to moles using its molar mass and then use the stoichiometric ratio to determine the maximum mass of sodium soap that can be produced:

Number of moles of glyceryl trimyristate = 195 g / 913.26 g/mol = 0.214 moles

Number of moles of sodium soap produced = 3 × 0.214 moles = 0.642 moles

Mass of sodium soap produced = number of moles × molar mass of sodium soap = 0.642 moles × 278.38 g/mol = 178.46 g

Therefore the correct answer is the maximum mass of the sodium soap that can be prepared from 195 g of glyceryl trimyristate is 178.46 g.

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Answer

The formula form of Manganese (IV) perbromate is

Explanation

The formula of Manganese is Mn

The formula for perbromate is BrO₄⁻

Oxidation number of Manganese (IV) = +4, That is Manganese (IV) is Mn⁺⁴

Therefore, multiply the charge of manganese by 1 and perchlorate by 4 t

From the equation of Graham's law of diffusion of gases, it would take the same number of moles of Ar(g) 23 minutes to effuse through the same membrane.

The rate of diffusion or effusion of gases is affected by temperature, concentration, pressure, and the molecular weight of the gas.

The gas law that describes how the molecular weight or vapor density of a gas affects the rate of diffusion is Graham's law of diffusion of gases.

Mathematically, Graha's law of diffusion of gases is given below as follows:

R₁ / R₂ = √(M₂ / M₁) or T₁ / T₂ = √(M₁ / M₂)

where;

R₁ is the rate of diffusion of gas 1

T₁ is the time of diffusion of gas 1

M₁ is the molecular weight of gas 1

R₂ is the rate of diffusion of gas 2

T₂ is the time of diffusion of gas 2

M₂ is the molecular weight of gas 2

Substituting the values in the second equation:

The molecular weight of Br₂ = 160 g/mol

The molecular weight of Ar = 40 g/mol

46 / T₂ = √(160 / 40)

T₂= 46 / 2

T₂ = 23 mins

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Answer:

H2s

Explanation:

a P e X :)

The appearance and observable qualities of matter are considered to be its physical attributes. Colour, smell, taste, solubility, etc. An attribute that appears during a chemical reaction is known as a chemical property. A few examples include pH, reactivity, and flammability, etc. The correct option is B.

The chemical makeup or content of matter are not altered after a physical transformation.  The internal makeup is unaffected as molecules rearrange themselves during this transformation. The chemical attribute is unaffected by a physical change.

Here both crushing a mineral into powder and picking up a paper clip with a magnet are physical changes.

Thus the correct option is B.

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Answer:

Force of gravity on an object

Explanation:

Let's derive this

Apply Newton's second law

\(\\ \tt\hookrightarrow F=ma\)

So

\(\\ \tt\hookrightarrow W=mg\)

The correct answer is a) Henry's Law. This law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas in the overlying space.

This means that as the partial pressure of the gas increases, more gas molecules will dissolve in the liquid. Henry's Law is important in many areas of science, including chemistry, environmental science, and biology.

For example, it is used to understand the behavior of gases in the atmosphere and their impact on climate change, as well as the ability of aquatic organisms to obtain oxygen from water.

Henry's Law can also be applied to industrial processes such as gas purification and carbonation of beverages.

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Answer: They are called substances and mixtures

Explanation:

Answer:

pure substances and mixtures.

Explanation:

Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.

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B is the answer ,ammonium accepts a proton and becomes ammonium ion

Sodium acetate formula: CH₃COO-Na⁺

Sodium acetate is a salt that is formed by the combination of acetic acid (CH₃COOH) and sodium hydroxide (NaOH). In chemical terms, sodium acetate is an ionic compound that is composed of positively charged sodium ions (Na⁺) and negatively charged acetate ions (CH3COO⁻). The formula for sodium acetate can be written as CH₃COO-Na⁺.

The acetate ion is made up of one carbon atom, three oxygen atoms, and two hydrogen atoms, hence the molecular formula for acetic acid is CH₃COOH. Sodium hydroxide is made up of one sodium ion and one hydroxide ion, so its molecular formula is NaOH.

When sodium hydroxide and acetic acid react, they undergo a neutralization reaction, which results in the formation of water (H₂O) and sodium acetate. This reaction can be written as follows:

NaOH + CH₃COOH -> NaCH₃COO + H₂O

Here, the sodium ion from sodium hydroxide reacts with the acetate ion from acetic acid to form sodium acetate, while water is produced as a byproduct. The positive and negative ions in sodium acetate are held together by ionic bonds, giving the compound its solid form."

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