2 years ago

What is the 25 element in chemistry

1 answer:

8 0

Hydrogen, helium, lithium, berylium, boron, carbon, nitrogen, oxygen, florine, neon, sodium, magnesium, alumini, silicon, phosphuros, sulfure, chlorine, argon, postassium, calcium, scandium, titanium, vanadium, chromium magenese

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2 years ago

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Calculate the number of grams in 9.00 x 10²⁶ atoms of potassium.

shutvik [7]

Answer: 5.84x10^4

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1 year ago

If I have 0.725 moles of gas at a temperature of 105 K and a pressure of 3.75 atmospheres, what is the volume of the gas?

iVinArrow [24]

If I have 0.725 moles of gas at a temperature of 105 K and a pressure of 3.75 atmospheres the volume of the gas 1.66 litres.

Explanation:

Data given:

number of moles of the gas = 0.725

temperature = 105 K

pressure = 3.75 atm

volume of the gas =?

R = 0.08206 Latm/mole Kelvin

Applying the ideal gas law to calculate the volume of the given gas:

PV = nRT

rearranging the equation to calculate volume:

V = $\frac{nRT}{P}$

putting the values in the equation:

V = $\frac{0.08206 X 0.725 X 105}{3.75}$

V = 1.66 Litres.

At a temperature of 105 K and pressure of 3.75 atm, 0.725 moles of gas occupy 1.66 litres of volume.

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3 years ago