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Leona [35]
4 years ago
15

What is the wavelength of a wave?

Chemistry
1 answer:
madam [21]4 years ago
4 0
Both A and D are correct. They basically mean the same thing. 
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Gas is contained in a 9.00-L vessel at a temperature of 24.0°C and a pressure of 5.00 atm. (a) Determine the number of moles of
coldgirl [10]

Answer:

a. Moles in the vessel = 1.85 moles of the gas

b. 1.11x10²⁴ molecules are in the vessel

Explanation:

a.It is possible to determine moles of a gas using the general law of gases:

PV = nRT

<em>Where P is pressure: 5.00atm; V is volume = 9.00L; R is gas constant: 0.082atmL/molK; T is absolute temperature: 273.15K +24.0 = 297.15K</em>

<em />

Computing the values:

PV / RT = n

5.00atm* 9.00L / 0.082atmL/molK*297.15K = n

<h3>Moles in the vessel = 1.85 moles of the gas</h3><h3 />

b. With Avogadro's number we can convert moles of any compound to molecules thus:

Avogadro's number = 6.022x10²³ molecules / mole

1.85moles ₓ (6.022x10²³ molecules / mole) =

<h3>1.11x10²⁴ molecules are in the vessel</h3>
3 0
4 years ago
If you have a density of 3 g/mL and a mass of 15 g, what is the volume?
marta [7]

Answer:

15 ml

Explanation:

Volume = mass / density.

So our answer is 15 / 3 = 15 mL

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