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sergij07 [2.7K]
2 years ago
14

5. Determine the number of liters in 4.32 grams of water (H2O). Answer: --_ 5.37L H2O__​

Chemistry
1 answer:
MariettaO [177]2 years ago
8 0

Answer:

4.32 \frac{1}{18.01} ×\frac{22.4}{1} = 5.37

Explanation:

22.4 is how many liters per mole. 18.01 is the mass of H2O.

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If 25.8 grams of BaO dissolve in enough water to make a 212 gram solution, what is the percent by mass of the solution?
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Mass of solute = 25.8 g

mass solution = 212 g

% =(  mass of solute / mass solution ) x 100

% = ( 25.8 / 212 ) x 100

% = 0.122 x 100

= 12.2 %



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3 years ago
Order the elements from smallest to largest atomic number
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the largest is francium, Z=87 , or caesium, Z=55 ; and the smallest is definitely helium, Z=2 .

Explanation:

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8 0
3 years ago
when carbon is burned in the air, it reacts with oxygen to form carbon dioxide. when 22.8 g of carbon were burned in the presenc
OverLord2011 [107]

Answer:

So there is83.6g CO2 produced

Explanation:

Burning carbon with air has the following equation

C + O2 → CO2

For 1 mol Carbon, we have 1 mol O2 and 1 mol CO2

Step 2: Calculating moles

mole C = 22.8g / 12g/mole

Mole C = 1.9 mole

1.9 mole C will completely react

Since for each mole C there is 1 mole O2 and 1 mole CO2

This means there will also react 1.9 mole of 02, to be formed 1.9 mole of CO2

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mass CO2 = 1.9 mole CO2 * 44g/mole =<u>83.6g CO2</u>

In this reaction 18.2 g of O2 remained unreacted

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So there is83.6g CO2 produced

4 0
3 years ago
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