What effect does a catalyst have on the reaction rate and the products formed in a reaction

The percentage composition of the carbon in the sample of alcohol is 52.1 %.

The percentage of an element in a given compound can be determined from the number of parts by mass of that element present in 100 parts by mass of the given compound.

First, calculate the total mass of the compound then, the total mass of the element present in the compound is divided by the total mass of the compound multiplied by 100.

Given, the mass of oxygen, and carbon, is 15.10 mg, and 22.6 mg respectively.

The total mass of the sample = 43.40 mg

The mass of the hydrogen = 43.40 - (15.10 + 22.6) = 5.7 mg

The percentage composition of the carbon = (22.6/43.40) × 100 = 52%

Therefore, the percentage composition of the carbon is equal to 52.1 %.

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Answer: Using more fossil fuels

Explanation: Burning fossil fuels releases Green House gasses into the atmosphere, such as carbon dioxide. The carbon dioxide in the atmosphere traps in heat, which causes global temperatures to increase.

Answer:

The molecular formula of X = C4 h8 O

Answer:

The volume of Component 1 is 36 cubic inches.

Explanation:

To calculate the volume of a composite solid, we need to determine the individual volumes of the different components and then add them together.

In this case, the composite solid consists of multiple components with the following dimensions:

Component 1:

Length: 4 inches

Width: 3 inches

Height: 3 inches

To find the volume of Component 1, we multiply the length, width, and height together:

Volume of Component 1 = Length x Width x Height = 4 in x 3 in x 3 in = 36 cubic inches

Therefore, the volume of Component 1 is 36 cubic inches.

Please provide the dimensions of the remaining components of the composite solid, and I will calculate the total volume by summing up the individual volumes.

Answer:

B. the molecules in liquid are loosely packed and scattered thus, they cannot be arranged

The empirical formula of a novel compound is CH2O if an analysis of a 0.5998g sample reveals that it contains the following masses of elements: carbon (0.1.565g), hydrogen (0.02627g), and oxygen (0.4170g).

You need to be aware of a compound's molar mass in order to ascertain its molecular formula. You can then decide which multiple of the empirical formula corresponds to the right molecular formula. 12.0g of carbon, 3.0g of hydrogen, and 8.0g of oxygen make up a compound in a 23.0g sample.

In a hydrocarbon, carbon makes up 92.3% of the mass and hydrogen makes up 7.7%.

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Answer:

NA

Explanation:

Answer:

1). 1-pentanol - Primary

2). 3-ethyl-3-pentanol - Tertiary

3). 2-hexanol - Secondary

4). Alcohol with two other carbons attached to the carbon with the hydroxyl group - Secondary

5). Alcohol with one other carbon attached to the carbon with the hydroxyl group - Primary

6). Alcohol with three other carbons attached to the carbon with the hydroxyl group - Tertiary

Explanation:

The distinct types of alcohol have been matched with the categories above as per their descriptions provided. In chemistry, alcohols have been categorized into three different categories namely primary, secondary, and tertiary.

In the primary type, those alcohols are involved in which there is an association of hydroxyl group to a primary atom of carbon along with a minimum of two atoms of hydrogen. Example; ethanol.

In the secondary type, the alcohols have an association of carbon atoms to hydroxyl with a single atom of hydrogen and has a formula of '-CHROH.' Example: 2 - propanol.

In the tertiary alcohols, here the association is between the hydroxyl group with the carbon atom that is saturated and possessing 3 atoms of carbon associated with it. It has a formula of '-CR2OH.' Example:  3-ethyl-3-pentanol, -tert -butyl alcohol, etc.

The equation of line q is determined as y =  ¹/₈x - ⁹/₄.

The slope of a line is the change in y axis to change in x axis.

y = – 8x + 6

from general line equation, y = mx + c

where;

m = - 8

m₂ = -1/m

m₂ = -1/-8

m₂ = 1/8

(y - y₁) / (x - x₁) = m₂

(y + 2)/(x - 2) = 1/8

y + 2 = ¹/₈(x - 2)

y + 2 = ¹/₈x -  ¹/₄

y = ¹/₈x - ⁹/₄

Thus, the equation of line q is determined as y =  ¹/₈x - ⁹/₄.

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The ideal gas law may be used to calculate the temperature at which 12.3 g of He would need to be cooled to fit a 34.0 l tank at 1.17 atm. According to this rule, the ideal gas constant multiplied by the number of moles in the gas equals the product of an ideal gas's pressure, volume, and temperature.

In order to solve for temperature, we may thus rearrange the equation. PV = nRT, where P is for pressure, V is for volume, n is for moles, R is for the ideal gas constant, and T is for temperature, is the equation. By multiplying both sides of the equation by the inverse of P and dividing both sides by nR, we may find the value of T.This results in the formula T = PV/nR.

The values for P, V, and nR can be substituted for the predetermined conditions. The volume is 34.0 l and the pressure is 1.17 atm. By dividing the mass, 12.3 g, by He's molar mass, 4.00 g/mol, the amount of moles of He may be computed. 0.0821 L*atm/K*mol is the ideal gas constant. Plugging these values into the equation gives us a temperature of about -267.7 K.

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Answer:

there are only three elements in 3CaSO4: calcium, sulfur and oxygen

The first step to answer this question is to use the molar mass of HNO3 to convert the given grams of this substance to moles (MM=63.0g/mol):

Now, divide the moles of solute by the kg of solvent to find the molality of the solution:

The molality of the solution is 2m.

Answer:

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

The amount of heat required to vaporize 181.20 g of ethanol would be 170.1 kJ.

Using the formula:

Q = n ∆Hvap

where:

Moles of 181.20 g of ethanol = 181.20 g / 46.07 g/mol = 3.933 mol

Substituting the values:

Q = 3.933 mol x 43.3 kJ/mol = 170.1 kJ

In other words, the amount of heat required to vaporize 181.20 g of ethanol is 170.1 kJ.

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The balanced equation for the reaction of aluminum, Al, and hydrochloric acid, HCl, to form aluminum chloride, AlCl3, and hydrogen, H2 is Al + 3 HCl → AlCl₃ + H₂. hence, the correct option is (a).

This equation shows that 1 mole of aluminum reacts with 3 moles of hydrochloric acid to produce 1 mole of aluminum chloride and 1 mole of hydrogen gas. The coefficients on both sides of the equation are balanced, indicating that the law of conservation of mass is satisfied. In order to satisfy the law of conservation of mass, a chemical equation must be balanced, which means that the number of atoms of each element must be the same on both sides of the equation. The coefficients in front of each compound or element indicate how many moles of that substance are involved in the reaction. By adjusting the coefficients in the equation, we can balance the number of atoms of each element and ensure that the total mass of the reactants equals the total mass of the products.

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Answer:

How many grams of K2Cr2O7, are soluble in 100 g of water at 95 ºC? Solubility Curve DRAFT. 10th - 12th grade. 3326 times. Chemistry. 63% average accuracy. 3 years ago ... When 20 grams of potassium chlorate, KClO 3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as: answer choices . supersaturated. saturated.

Explanation:

Answer:

Explanation:

c) fusion combines into one product plus energy

Answer:

Humidity is the measure of how much water vapor is in the air.

the concentration of HCI

\(mass \: formula \: of \: hci = 1 + 35.5\)

\( = 36.5\)

\(mass = relative \: formula \: mass \times amount\)

\( = 36.5 \times 0.125\)

\( = 4.56g | {dm}^{3} \)

hence, the concentration of HCI is 4.56g/dm3.

Answer:

non polar. polar ionic substance

The limiting and excess reactant can be obtained as follow:

2Mg + O₂ -> 2MgO

From the balanced equation above,

48 g of Mg reacted with 32 g of O₂

Therefore,

62.1 g of Mg will react with = (62.1 × 32) / 48 = 41.4 g of O₂

We can see from the above that only 41.4 g of O₂ is required to react completely with 62.1 g of Mg.

Thus, the limiting reactant is magnesium, Mg and the excess reactant is oxygen, O₂

The mass of the excess reactant remaining can be obtained as shown below:

Mass of excess reactant remaining = Mass given - mass reacted

Mass of excess reactant remaining = 100 - 41.4

Mass of excess reactant remaining = 58.6 g

The mass of H₂SO₄ produced can be obtained as illustrated below:

Mg + O₂ -> 2MgO

From the balanced equation above,

48 g of Mg reacted to produce 80 g of MgO

Therefore,

62.1 g of Mg will react to produce = (62.1 × 80) / 48 = 103.5 g of MgO

Thus, the mass of product, MgO produced is 103.5 g

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Complete question:

If 62.1 grams of magnesium react with 100.0 grams of oxygen, how many grams of product are produced?

Which is the Limiting reactant?

Which is the Excess reactant?

How many grams of excess reactant remain?

Explanation:

Following are the kinetic theory of gases postulates:

1) Space-volume to molecules ratio is negligible.

2)There is no force of attraction between the molecules at normal temperature and pressure. The force of attraction between the molecules build when the temperature decreases and the pressure increases.

3) There is large space between the molecules resulting in continuous motion.

4) The free movement of molecules results in collision which is perfectly elastic.

5) The molecules have kinetic energy due to random movement. But the average kinetic energy of these molecules differs with temperature.

6) Molecules exert pressure on the walls of the container.

Answer:

Orientation

Explanation:

Financial goals, current expenses, and income are the creative ways to spend your money.

A budget represents a calculating plan, typically financial but not always, for a specific time frame, typically one year or one month. Predicted sales and revenue amounts, resource quantities (such as time, costs, and expenses), environmental impacts (such as greenhouse gas emissions), other impacts, assets, liabilities, and cash flows are all possible inclusions in a budget.

Budgets are a measurable way for businesses, governments, families, and numerous other organisations to articulate their strategic plans of action.  In a budget, intended expenses are expressed together with suggestions for how to fund them. A budget can show a surplus of resources for later use or a deficit if expenses are greater than income as well as other resources. Financial goals, current expenses, and income are the creative ways to spend your money.

Therefore, financial goals, current expenses, and income are the creative ways to spend your money.

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The original pressure of argon in the cylinder is 5.68 atm.

The original pressure of argon in the cylinder is calculated as follows.

Apply the concept of molar ratio or molar proportion to determine the original pressure of argon in the cylinder.

Pr = [(Pn x Vn) + (Pa x Va) ] / (Vn + Va)

where;

7.15 = [(11.08 x 4.5) + (12 x Pa)] / (4.5 + 12)

7.15(4.5 + 12) = 49.86 + 12Pa

117.98 = 49.86 + 12Pa

68.12 = 12Pa

Pa = 68.12/12

Pa = 5.68 atm

Thus, the original pressure of argon in the cylinder is determined by applying concept of molar ratio.

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Answer:

To find the pH of a solution that contains a strong acid like HCl, you can use the equation:

pH = -log[H+]

Where [H+] is the concentration of hydrogen ions in moles per liter. In this case, you know the concentration of HCl and the volume of water, so you can calculate the concentration of hydrogen ions by using the equation:

[H+] = (0.0425 moles HCl) / (6.50 liters water) = 0.0653846 moles/liter

Finally, you can calculate the pH:

pH = -log[0.0653846 moles/liter] = 1.18

So the pH of the solution is 1.18.

Explanation:

Do you want to know shot trick also?

Erosion by water during the rainy season can be a significant natural phenomenon. When it rains, water flows over the land, picking up soil particles and carrying them along with it.

Water is a clear, colorless, odorless, and tasteless liquid that is essential for life. It is a chemical compound made up of two hydrogen atoms and one oxygen atom, with the chemical formula H2O. Water is the most abundant substance on Earth, covering approximately 71% of its surface.

Water is a unique substance because of its molecular structure, which allows it to exist in all three physical states - solid, liquid, and gas - at temperatures and pressures commonly found on Earth. It has a high heat capacity, meaning it can absorb and release large amounts of heat without changing temperature significantly. This property is important for regulating the Earth's climate and for maintaining the temperature of living organisms.

Water is essential for many biological processes, such as hydration, digestion, and metabolism. It also plays a crucial role in the Earth's water cycle, where it evaporates from bodies of water and plants, condenses into clouds, and falls back to the surface as precipitation.

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Answer:

5l NO

2

at STP

No. of molecules=

22.4

5

mol=

22.4

5

×N

A

molecules

A) 5ℊ of H

2

(g)

No. of moles=

2

5

mol=

2

5

×N

A

molecules

B) 5l of CH

4

(g)

No. of moles of CH

4

=

22.4

5

mol=

22.4

5

N

A

molecules

C) 5 mol of O

2

=5N

A

O

2

molecules

D) 5×10

23

molecules of CO

2

(g)

Molecules of 5l NO

2

(g) at STP=5l of CH

4

(g) molecules at STP

Therefore, option B is correct.

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