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miv72 [106K]
2 years ago
9

I just need the last one

Chemistry
1 answer:
Allisa [31]2 years ago
3 0
You can search all these questions up on the internet.
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If 3.1 moles of potassium chloride react with oxygen, how many moles of potassium chlorate would be produced?
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Answer: 19 dollar fortnite card Explanation:who wants it

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To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.2-L bulb, then filled
Ber [7]

Answer:

N2

Explanation:

We use the ideal gas equation to calculate the number of moles of the diatomic gas. Then from the number of moles we can get

Given:

P = 2atm

1atm = 101,325pa

2atm = 202,650pa

T = 27 degrees Celsius = 27 + 273.15 = 300.15K

V = 2.2L

R = molar gas constant = 8314.46 L.Pa/molK

PV = nRT

Rearranging n = PV/RT

Substituting these values will yield:

n = (202,650 * 2.2)/(8314.46* 300.15)

n = 0.18 moles

To get the molar mass, we simply divide the mass by the number of moles.

5.1/0.18 = 28.5g/mol

This is the closest to the molar mass of diatomic nitrogen N2.

Hence, the gas is nitrogen gas

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3 years ago
Which element is a nonmetal?
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Slope is a slippe hill

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What is the complete balanced equation for the reaction that occurs when lithium carbonate (Li2CO3) is heated?
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When heating lithium carbonate (Li2CO3), it will dissociate to Li2O and Co2. So the balanced chemical equation of this reaction is Li2CO3 = Li2O + CO2. 
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