CHEMISTRY HIGH SCHOOL

A single unit (subunit) of an organic molecule is called a ______. multiple choice question. a. solvent b. solute c. monomer d. solution

Answers

Answer 1

Answer:

Answer:

monomer

Explanation:

a single unit of a organic molecule is called a monomer

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Consider the reaction: 2 H2O (g)-->2 H2 (g) + O2 (g). ΔH=483.6 Kj/mol. If 2 moles of H2O (g) are converted H2(g) and O2(g) against a pressure of 1 atm at 125 degrees Celcius what is ΔE of reaction?

What does a 100 lb person weigh on Uranus

Answers

If you were 100 lb on Earth, you would be 92 lb on Uranus

Hydrogen peroxide decomposes to give water and oxygen gas according to the equation below. If 3.0 moles of hydrogen peroxide decompose, what volume of oxygen gas is produced at a pressure of 1.0 atm and a temperature of 23 °C? 2 H2O2(l) → 2 H2O(l) + O2(g)

Answers

When 3.0 moles of hydrogen peroxide decompose at 1.0 atm and 23°C, approximately 36.78 liters of oxygen gas are produced according to the ideal gas law.

What volume of oxygen gas is produced at a pressure of 1.0 atm and a temperature of 23 °C?

To find the volume of oxygen gas produced when 3.0 moles of hydrogen peroxide decompose at a pressure of 1.0 atm and a temperature of 23°C, you can use the ideal gas law:

PV = nRT

Where:

- P is the pressure (1.0 atm).

- V is the volume (what we want to find).

- n is the number of moles of gas (1.5 moles of O2 since 1 mole of O2 is produced for every 2 moles of H2O2).

- R is the ideal gas constant (approximately 0.0821 L.atm/mol.K).

- T is the temperature in Kelvin (23°C needs to be converted to Kelvin, which is 296.15 K).

First, calculate the number of moles of O2 produced:

n = 3.0 moles of H2O2 * (1 mole of O2 / 2 moles of H2O2) = 1.5 moles of O2

Now, plug in the values into the ideal gas law and solve for V:

1.0 atm * V = 1.5 moles * 0.0821 L·atm/mol·K * 296.15 K

Now, calculate the volume:

V = (1.5 moles * 0.0821 L·atm/mol·K * 296.15 K) / 1.0 atm

Calculate the volume:

V ≈ 36.78 L

So, the volume of oxygen gas produced when 3.0 moles of hydrogen peroxide decompose at 1.0 atm and 23°C is approximately 36.78 liters.

Learn more on ideal gas law here;

brainly.com/question/27870704

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First you need to use stoichiometry to find how many moles of oxygen is produced from the reaction. To do this you need to multiply the number of moles of hydrogen peroxide by the molar ratio which is 1/2 since 1 mole of O₂ is produced from 1 mole of H₂O₂. 3mol H₂O₂x(1mol O₂/2mol H₂O₂)=1.5mol O₂
you you need to you the ideal gas law (PV=nRT) to find the volume of gas produced. V=nRT/P
n=1.5mol
R=0.08206atmL/molK
T=23°C (turn that into 296K)
P=1atm
V=(1.5molx0.08206atmL/molK)/1atm
V=0.1231L

I hope this helps.

Is it possible for an object not to be in motion and still have force acting upon it?

Answers

yes,this is an example:
An apple is sitting on a desk he is not in motion but one of the forces acting upon it is gravitational pull because is not floating around, the earth gravitational pull is pulling it down to the earth's surface.

Can someone pls help indicate the number of significant figures with these numbers: 34g, 564 l, 19.3 mm, 23.45 mg, 101 km, and 3400 g

Answers

The concept of significant figures are mainly used by scientist and engineer to know the significance of digits in a measurement. Therefore, significant figures gives an idea about the digits that are necessary to indicate the experimental value.