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2 years ago

What pressure (in atm) is required to contain 0.034 moles of oxygen gas in a 5.1 L container at a temperature of 25.00C

Chemistry

1 answer:

kherson [118]2 years ago

5 0

Answer:

0.16 atm

Explanation:

Let's look at the formula PV=nRT. First of all, T should be in kelvin, so let's add 273. Now solve for P so we get P = nRT/V.

Now let's plug these in...

P = (0.034 mol)(0.08206 L atm mol^-1 K^-1)(298 K)/5.1 L

After solving and rounding to sig figs we get 0.16 atm

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Given: Z = 0.43Y + 12 ; What is Y when Z = 28 ?<br> Can someone explain this one?

ss7ja [257]

Z=0.43y+12=28=0.43y+12=28-12=0.43y=16=0.43y,then u divide 0.43y by itself and by 16,you will get y=37.209

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3 years ago

Is distilled water a compound, element, or mixture?

Verizon [17]

Distilled water is a compound.

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2 years ago

The electrical current in a circuit is measured in which of the following units.

Vikentia [17]

The answer should be volts

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3 years ago

A sample of lsd (d-lysergic acid diethylamide, c24h30n3o) is added to some table salt (sodium chloride) to form a mixture. given

spin [16.1K]

1) All the CO2 comes from the C24 H30 N3 O

2) To balance C from CO2 with C from C24, the ratio of cC24 H30 N3 O to CO2 is 24 / 1

3) Convert 1.20 g of CO2 to number of moles

number of moles = mass in grams / molar mass

mass = 1.20 g

molar mass = 12.01 g/mol + 32.00 g/mol = 44.01 g/mol

number of moles = 1.2 g / 44.01 g/mol = 0.0273 mol

4) proportion

1 mol C24 H30 N3 O / 24 mol CO2 = x / 0.0273 mol CO2

=> x = 0.0273 mol CO2 * 1 mol C24H30N3O / 24 mol CO2 = 0.00114 mol C24H30N3O

5) Convert 0.00114 mol C24H30N3O to grams

molar mass = 376.5 g/mol

mass = 0.00114 mol * 376.5 g/mol = 0.429 g

6) mass percent in the mixture

mass percent = (mass of lsd / mass of mixture) * 100 = (0.429g / 1.0g) * 100 = 42.9%

Answer: 42.9%

6 0

3 years ago

If the absolute temperature of a gas is tripled, what happens to the root‑mean‑square speed of the molecules?

Gnesinka [82]

Answer:

D. The new rms speed is 1.732 times the original rms speed.

Explanation:

The expression for the root mean square speed is:

$C_{rms}=\sqrt {\dfrac {3RT}{M}}$

R is Gas constant having value = 8.314 J / K mol

M is the molar mass of gas

T is the absolute temperature

As seen from the formula, root mean square speed is directly proportional to the square root of the absolute temperature.

So,

$C_{rms}\propto \sqrt {T}$

Given, absolute temperature of a gas is tripled, so, the new rms speed will be √3 (1.732) of the original.

<u>Hence, the correct option is:- D. The new rms speed is 1.732 times the original rms speed.</u>

4 0

3 years ago