I need a written report to explain how changing the conditions affects the rate of reaction. ( You may assume that an unnamed catalyst can be used in the reaction) Explain the factors affecting the rate of reaction.

Answer:

an  alternative fuel is any automotive fuel other than gasoline and diesel fuel

Explanation:

Answer:

Acid

Explanation:

The given structure is that of formaldehyde.

Formaldehyde is a weak acid (pH = 3.5 / 3).

______

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Explanation:

oxidation of Nitrogen in NO2 is +4

when a solid is dissolved in a liquid the vapor pressure of the liquid is decreases because the surface area from which molecules can evaporate is reduced

These are physical properties of solution that changes with the addition of solute , i.e. colligative properties are different for pure solvent and for solution which has solute .

those properties of a solution is a colligative property if it depends only on the ratio of the number of particles of solute and solvent in the solution, not the identity of the solute.

When a solute is added to the solvent, some of the solute molecules occupy the space near the surface of the liquid,

When a solute is dissolved in a solvent, the number of solvent molecules near the surface decreases, and the vapor pressure of the solvent decreases.

This has no effect on the rate at which solvent molecules in the gas phase condense to form a liquid.

But it decreases the rate at which the solvent molecules in the liquid can escape into the gas phase.

As a result, the vapor pressure of the solvent escaping from a solution should be smaller than the vapor pressure of the pure solvent.

Therefore when a solid is dissolved in a liquid the vapor pressure of the liquid is decreases because the surface area from which molecules can evaporate is reduced

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Answer:

1. sovent

2. solute

3. solutability

Explanation:

Answer:

Temperature should double

Explanation:

Temperature and pressure are directly related given volume is held constant. If it's a rigid container, the volume is staying the same, thus increasing pressure will increase temperature.

Answer:

they have same number of electrons

Titration is used to describe a situation in which an acid is added slowly into a base to determine the amount of acid present.

The term titration is used to describe a situation in which an acid is added slowly into a base and the amount of acid is determined from the volume of  acid used.

We must note that the volume of acid is always the average volume of acid used and it can be used to compute the number of moles of acid. The question is incomplete as numerical values are not shown here.

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Answer:

Kinetic energy

Explanation:

Gravitational potential energy changes into kinetic energy. The equation for gravitational potential energy is GPE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 on Earth), and h is the height above the ground in meters

Answer:

c i got it right on usatestprep

Explanation:

............

Answer:

Here, is the number of moles in the CO2. Substitute 0.20 g for weight and 44 g/mol for molecular weight of the CO2.

1 mol = 6.02.10²³ particles (atoms, molecules, ions)

mol CO₂ = 0.2 g : 44 g/mol = 0.0045

molecules = 0.0045 x 6.02 x 10²³ = 2.709 x 10²¹

Answer:

The hydrogen ion concentration in a solution, [H+], in mol L-1, can be calculated if the pH of the solution is known.

pH is defined as the negative logarithm (to base 10) of the hydrogen ion concentration in mol L-1 pH = -log10[H+] ...

[H+] in mol L-1 can be calculated using the equation (formula): [H+] = 10-pH

The composition of the stack gas are :

[tex]CH_4[/tex]= 0.8713

[tex]C_3H_8[/tex] = 0.0202

CO = 0.107

The ratio of the number of moles of one component of a solution or other mixture to the total number of moles representing all of the components.

Assuming 100 g of the stack gas. Calculate the mass of each species in this sample according to their percentages.

Mass of [tex]CH_4[/tex] : 70% of 100 g = 70 g

Mass of [tex]C_3H_8[/tex] : 15% of 100 g = 15 g

Mass of CO : 15% of 100 g = 15 g

Now calculate the number of moles of each species:

Number of moles of [tex]CH_4[/tex] : [tex]\frac{70 g}{16.04 g/mol}[/tex] = 4.3 mole

Number of moles of [tex]C_3H_8[/tex]: [tex]\frac{15 g}{144.1 g/mol}[/tex] = 0.10 mole

Mass of CO : [tex]\frac{15 g}{28.01 g/mol}[/tex] = 0.53 mole

Now to calculate the mole fraction of each we use the formula:

Mole fraction of [tex]CH_4[/tex]: [tex]\frac{4.3}{4.935}[/tex] = 0.8713

Mole fraction of [tex]C_3H_8[/tex] : [tex]\frac{0.10}{4.935}[/tex] = 0.0202

Mole fraction of CO : [tex]\frac{0.53}{4.935}[/tex] = 0.107

Hence, composition of the stack gas are:

[tex]CH_4[/tex] = 0.8713

[tex]C_3H_8[/tex] = 0.0202

CO = 0.107

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43.8 grams of styrene glycol must be dissolved in 98.7 g of benzene to raise the boiling point by 8.57 °C.

Boiling point elevation is the phenomenon that occurs when the boiling point of a liquid (a solvent) is increased when an  another compound is added, such that the solution has a higher boiling point than the pure solvent.

Boiling point elevation occurs whenever a non-volatile solute is added to a pure solvent.

It can be calculated as

ΔT = i * [tex]K_{b}[/tex] * m

where m, Kb and i are the molality of solution, ebullioscopic constant and Van't Hoff factor respectively

The data given in the question is

ΔT = 8.57 °C

mass of solvent = 98.7 g

[tex]K_{b}[/tex] = 2.67 °C/m

Van't Hoff Factor for glycol is 1

Substituting the values in the above equation

8.57 = 1 * 2.67 * (moles of styrene glycol/mass of solvent in kg)

[tex]\rm \dfrac{8.57}{2.67} = \dfrac{moles}{98.7\;\times10^{-3} }\\\\\rmmoles \;of \;styrene\; glycol = \dfrac{8.57\times 98.7\times 10^{-3} }{2.67} \\\\\rm\dfrac{mass\; of\; styrene}{Molecular \;weight} = 0.3168\\\\\rmmass\; of\; styrene = 0.3168\times 138.2\\\\mass\; of\; styrene = 43.8 gm[/tex]

Therefore 43.8 grams of styrene glycol must be dissolved in 98.7 g of benzene to raise the boiling point by 8.57 °C.

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The water with the salt boiled at a higher temperature than the water without the salt.

When we add any solute or other compound in any pure solvent then the boiling point of the solution will increases.

And elevation in boiling point will be expressed by the following equation:

ΔTb = (Kb)(m)(i), where

So the pot with salt will have higher boiling point then the simple water.

Hence, pot with salt has a higher boiling point.

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Answer:

D i guess..............

Answer: An Ecosystem

Explanation:

Answer:

Explanation:

  1 Non-zero digits are always significant.

  2 Any zeros between two significant digits are significant.

  3 A final zero or trailing zeros in the decimal portion ONLY are significant.

Answer:

   Combine shampoo and cornstarch in a bowl and mix well.

   If desired, mix in 3-4 drops of food coloring.

   Add in 1 tablespoon of water and stir. Stirring well after each, slowly add    additional tablespoons of water.

   Knead the slime for around 5 minutes.

   Store in an airtight container.

Explanation:

1. To make slime at home, first place glue into a bowl, then add few drops of food coloring and stir until combined. Now add baking soda, stir it in.

2. After, knead or mix with a spoon for about 2-5 minutes until it turns into slime (patience is the key). Enjoy your homemade slime.

Answer:

Explanation:

In both of these reactions, the water acts as an acceptor of hydrogen ions, and is thus a base.

M1.V1=M2V2

M1 x 23.759 = 0.63 x 0.63

M1 = 0.017 M

Answer:

The value of x in ethanol is 5

Explanation:

Given molar mass, you can subtract the molar masses of different elements present to find the missing amount of hydrogen; in other words:
Carbon*2 + Hydrogen*x + Oxygen*1 + Hydrogen*1 = 46
Molar mass carbon = 12.01
Molar mass hydrogen = 1
Molar mass oxygen = 16
12.01*2 g/mol + 1*x g/mol + 16*1 g/mol + 1*1 g/mol = 46 g/mol
Subtracting all knowns from the current molar mass gives
46 - 41.02 = 4.98

This means that x amounts of hydrogen has a molar mass of 4.98, or roughly just 5. Since each hydrogen has a molar mass of one, that means that there are 5 hydrogens missing and the complete molecular formula is C2H5OH

The standard enthalpy of formation of ethane is determined as -192.5 kJ/mol.

The reaction for the formation of ethane is given as;

2C + 3H₂ → C₂H₆

Where;

The standard enthalpy of formation of ethane is calculated as follows;

ΔH = ΔH₁ + ΔH₂  + ΔH₃

where;

2C + 3H₂ → C₂H₆

ΔH = 2(-286) + 3(-393.5) + 1(1560)

ΔH = -572 - 1180.5 + 1560

ΔH = -192.5 kJ/mol

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Answer:

the atomic number

Explanation:

the atomic number/number of protons

Since  the molecules tend to coalesce but still slide past one another, the substance was changed from gas to liquid.

The term phase change refers to a change from one state of matter to another. Now we know that one of the effects of heat is a change of state.

Hence, when heat is withdrawn, the molecules tend to coalesce but still slide past one another. This implies that the substance was changed from gas to liquid.

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Answer: Choice 3: O

Explanation:

EDG FINAL

Answer:

1.  7 ,   2.  0 crackers, 6 choc pieces and 1 marshmallow

Explanatio