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Feliz [49]
3 years ago
8

Please can you help me from 1 to 6

Chemistry
1 answer:
jeyben [28]3 years ago
4 0

Answer:

um

Explanation:

help you? you mean do it for you? nah man you can just use the calculator ;)

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16.94/18=.9411111

sig figs: 0.9411 mole of water

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Systemic Circulation

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If there is a New Moon at midnight on October 1, when would the next New Moon occur?
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3 years ago
If 125.0g of nitrogen is reacted with 125.0g of hydrogen, what is the theoretical yield of the reaction? What is the excess reac
MakcuM [25]

Answer:

Hydrogen is the excess reactant

Nitrogen is the limiting reactant

151.6g is theoretical yield

Explanation:

The reaction of N₂ with H₂ to produce NH₃ is:

N₂ + 3H₂ → 2NH₃

To find theoretical yield we need to determine limiting reactant with the moles of each gas as follows:

Nitrogen -Molar mass: 28g/mol-

125.0g * (1mol / 28g) = 4.46 moles

Hydrogen -Molar mass: 2g/mol-

125.0g * (1mol / 2g) = 62.5 moles of hydrogen

For a complete reaction of 4.46 moles of N2 there are needed:

4.46 moles N2 * (3moles H2 / 1mol N2) = 13.38 moles of hydrogen

As there are 62.5 moles of hydrogen:

<h3>Hydrogen is the excess reactant</h3><h3>Nitrogen is the limiting reactant</h3><h3 />

With nitrogen, the limiting reactant, we determine theoretical moles (Assuming 100% of the reaction occurs) and theoretical yield (In mass):

4.46 moles N2 * (2moles NH3 / 1mol N2) = 8.92 moles of ammonia

As molar mass of ammonia is 17g/mol:

8.92 moles of ammonia * (17g/mol) =

<h3>151.6g is theoretical yield</h3>

5 0
3 years ago
A sample of a substance containing only magnesium and chlorine was tested in the lab and was found to be composed of 74.5% chlor
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Use a ratio to find out that x/190.2 = 74.5/100 

hope this helps
8 0
3 years ago
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