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elena-14-01-66 [18.8K]
3 years ago
11

How many oxygen atoms are there in the following compound: 2HNO3 3 5 6 12

Chemistry
2 answers:
Fudgin [204]3 years ago
7 0

Answer:

6

Explanation:

There is 2 of the coumpond, in one compound, there are 3 oxygens. But when there are two, it is 6.

Ahat [919]3 years ago
3 0

Answer:

The answer is there are 3 oxygen atoms.

Explanation:

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How many atoms of magnesium metal are needed to produce 3.87 moles of magnesium oxide
Ket [755]

Answer:

48.42g of Mg

Explanation:

4 0
2 years ago
Read 2 more answers
The compound methyl butanoate smells like apples. Its percent composition is 58.8% C, 9.9% H, and 31.4% O. What’s the empirical
blsea [12.9K]
To find the empirical formula you would first need to find the moles of each element:

58.8g/ 12.0g = 4.9 mol C

9.9g/ 1.0g = 9.9 mol H

31.4g/ 16.0g = 1.96 O

Then you divide by the smallest number of moles of each:

4.9/1.96 = 2.5

9.9/1.96 = 6

1.96/1.96 = 1

Since there is 2.5, you find the least number that makes each moles a whole number which is 2.

So the empirical formula is C5H12O2.
6 0
3 years ago
What is the force exerted by the load being lifted is called?
ludmilkaskok [199]
Hey!!

here is your answer >>>

The answer for your question is the tension. We lift it up and the tension is exerted by the object downwards!.

Hope my answer helps!
8 0
3 years ago
Is alcohol evaporating a chemical or physical change
snow_tiger [21]
Physical change , the states are changing from liquid to gas
8 0
3 years ago
The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bott
navik [9.2K]
We can solve this problem by using Henry's law. 
Henry's law states that the amount of dissolved gas is proportional to its partial pressure.
C=kP
C is <span>the solubility of a gas.
</span><span>k is Henry's law constant.
</span><span>P is the partial pressure of the gas.
</span>We can calculate the constant from the first piece of information and then use Henry's law to calculate solubility in open drink.
0.12=4k
k=0.03
Now we can calculate the solubility in open drink.
C_o=kP_o&#10;
C_o=0.03 \cdot  3\cdot 10^{-4}=0.09\cdot 10^{-4} \frac{mol}{L}
Now we need to convert it to g/L. One mol of CO2 is 44.01<span>g. 
</span>The final answer is:
C_o=0.09\cdot 10^{-4}\cdot 44,01=3.4\cdot 10^{-4} \frac{g}{L} 


4 0
3 years ago
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