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Vinvika [58]
2 years ago
6

Hey Friends Can Yall Help Me Show Ya Work And Don’t Comment No B.S Cause Yu Will Get Cursed Out

Chemistry
1 answer:
melisa1 [442]2 years ago
3 0
C. Speed is how fast, velocity has direction and acceleration is a change in velocity.
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Which statement describes the general trends in electronegativity and metallic properties as the elements in Period 2 are consid
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Answer:

Electronegativity increases and metallic

properties decrease.

Explanation:

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3 years ago
PLEASE HELP ME. REAL ANSWERS ONLY PLZ
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3 years ago
Write the balanced reaction using the fewest whole number coefficients to describe the reaction between gaseous hydrogen and gas
Anastasy [175]

<u>Answer:</u> The percentage yield of water is 9.5 %

<u>Explanation:</u>

We are given:

Moles of hydrogen = 14 moles

Moles of oxygen = 10 moles

The chemical equation for the formation of water from hydrogen and oxygen follows:

2H_2+O_2\rightarrow 2H_2O

By Stoichiometry of the reaction:

2 moles of hydrogen gas reacts with 1 mole of oxygen gas

So, 14 moles of hydrogen gas will react with = \frac{1}{2}\times 14=7mol of oxygen gas

As, given amount of oxygen gas is more than the required amount. So, it is considered as an excess reagent

Thus, hydrogen gas is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

2 moles of hydrogen gas produces 2 moles of water

So, 14 moles of hydrogen gas will produce = \frac{1}{2}\times 14=7mol of water

To calculate the percentage yield of water, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of water = 1.33 moles

Theoretical yield of water = 14 moles

Putting values in above equation, we get:

\%\text{ yield of water}=\frac{1.33mol}{14mol}\times 100\\\\\% \text{yield of water}=9.5\%

Hence, the percent yield of the water is 9.5 %.

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3 years ago
A reaction that had two compounds as reactants and two compounds as products is most likely a
sergejj [24]

double-replacement reaction

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Which two options are examples of waves refecting
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A voice echo

Your image in a mirror

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hope this helps

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