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liraira [26]
3 years ago
10

What volume in L would 15.6g of helium gas occupy at stp

Chemistry
1 answer:
Simora [160]3 years ago
8 0
22.4 L ummmmmmmmmmmmmmmmmmmmmmmm
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In which process are simple materials chemically combined to form more complex materials?
allsm [11]

Answer:

A) synthesis

I hope this helps!

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3 years ago
Describe how to determine the rate law for an<br> overall reaction that involves multiple steps.
Zarrin [17]

Answer:

The sum of each elementary step in a reaction mechanism must yield the overall reaction equation. From the rate law of the rate-determining step it  must agree with the experimentally determined rate law. The rate-determining step is the slowest step in a reaction mechanism. Because it is the slowest, it determines the rate of the overall reaction.

Explanation:

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3 years ago
Which of the following is the empirical formula for C4H8?
TEA [102]
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7 0
3 years ago
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Which best describes the particles in a gas when the temperature rises from 23 °C to 46 °C?
mariarad [96]
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5 0
4 years ago
The theoretical yield of Cl2 from certain starting amounts of MnO2 and HCl was calculated as 60.25 g and 65.02 g, respectively.
user100 [1]

Answer:

c    43.38 g

Explanation:

The reaction  between MnO2 and HCl can be represented by the following balanced equation:

MnO2 + HCl ---> Cl2 + MnCl2 + H2O

From the balanced equation, the theoretically required molar ratio of MnO2 to HCl is 1:1, therefore the yields would have been expected to be equal.  

For the fact that HCl  gives a higher yield (65.02g) than MnO2 (60.25g) according to the problem statement, HCl should be in excess,  while the limiting reagent should be MnO2 .  

Thus, the theoretical yield of Cl2 will be  60.25 g.

By definition, the percentage yield is given by

% Yield = (Actual Yield) / (Theoretical Yield),  

This can be simplified to

Actual Yield = % Yield * Theoretical Yield

Plugging in the given values we have

Actual Yield = 72% *  60.25 = 43.38 g

5 0
3 years ago
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