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Verizon [17]
3 years ago
9

Answer ASAP 50 pts

Chemistry
2 answers:
Oduvanchick [21]3 years ago
8 0

Answer:

Loss of reactants through transfer

Explanation:

Reactants can be lost a little when being transferred by human error

Sonja [21]3 years ago
4 0

Percent yield is the ratio between actual and theoretical yield multiplied by 100%. The higher the actual yield the higher is the percent yield. In the percent yield there is always a limiting reagent that creates the difference between what is obtained and what is calculated. Percent yield can never exceed 100% if that happens it means that there was some error in the theoretical yield calculation.

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A mixture of 14.0 grams of H2, 84.0 grams of N2, and 64.0 grams of O2 are placed in a flask. The partial pressure of the O2 is 7
Hitman42 [59]

Answer:

P_{tot}=465.27torr

Explanation:

Hello there!

In this case, according to the given information, it will be possible for us to use the Dalton's law, in order to solve this problem. However, we first need to calculate the mole fraction of oxygen by firstly calculating the moles of each gas:

n_{H_2}=\frac{14.0g}{2.02g/mol} =6.93mol\\\\n_{N_2}=\frac{84.0g}{28.02g/mol}=3.00mol\\\\n_{O_2}=\frac{64.0}{16.00g/mol}  =2.00mol

Next, we calculate such mole fraction as follows:

x_{O_2}=\frac{2}{6.93+3+2} =0.168

Then, given the following equation:

P_{O_2}=P_{tot}*x_{O_2}

So we solve for the total pressure as follows:

P_{tot}=\frac{P_{O_2}}{x_{O_2}} \\\\P_{tot}=\frac{78.00torr}{0.168} \\\\P_{tot}=465.27torr

Regards!

6 0
3 years ago
Classify the statements below as Weather or Climate. HELP ME WITH THIS The wind is blowing from the south. The average temperatu
ivanzaharov [21]

Answer:

Weather:

- The wind is blowing from the south.

- There is a thunderstorm warning.

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Climate:

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Explanation:

Hope it helps.

6 0
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abruzzese [7]

Kaka ml nyu yan wala kaming paki kung ano ang lagi ginagawa nyu

8 0
3 years ago
Matter is the substance that we can see and observe.<br><br> True<br> False
SSSSS [86.1K]
I'd say true. 
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Lets say you put random stuff in a box. That stuff is matter, filling the box.
Its common to say that matter is everything around you. You can see everything around you (almost).
3 0
3 years ago
If 20.6 grams of ice at zero degrees Celsius completely change into liquid water at zero degrees Celsius, the enthalpy of phase
netineya [11]

Answer:

True

Explanation:

4 0
4 years ago
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