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inysia [295]
3 years ago
11

Im chemistry we are solving chemical reactions and on the assignments our teacher put the questions as riddels and I can not get

this one:
What can you "THROW" and not "CATCH"?

What is the answer?
Chemistry
1 answer:
lara31 [8.8K]3 years ago
6 0
Are they trying to be funny about it?
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Explanation:

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Which coefficients correctly balance the formula equation nh4no2(s)-> n2(g) + h2o(l)?
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3 years ago
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HELP!!!!!What is the molar mass of a gas which has a density of .249 g/L at 20.0 degrees Celsius and a pressure of .95 atm?
fgiga [73]

Answer:

6.31g/mol

Explanation:

Using the ideal gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

Mole (n) = mass (m)/molar mass (Mm)

* Mm = m/n

Also, density (p) = mass (m) ÷ volume (V)

PV = nRT

Since n = M/Mm

PV = M/Mm. RT

PV × Mm = m × RT

Divide both sides by V

P × Mm = m/V × RT

Since p = m/V

P × Mm = p × RT

Mm = p × RT/P

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Mm = 6.31g/mol

7 0
3 years ago
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