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Nadya [2.5K]
3 years ago
12

One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). Wh

at is the percent composition of nitrogen in nitrous acid?
Chemistry
1 answer:
Zigmanuir [339]3 years ago
8 0
Mass % of nitrogen = mass of nitrogen*100  / total mass 

= 14*100 / (1+ 14 + 32)

= 14*100 / 47
= 29.7 % 



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noname [10]

Answer:

Helium, Neon, Argon, Krypton, Xenon, Radon, and Oganesson

Explanation:

they have full outer shells

8 0
2 years ago
The average atomic weight of copper, which has two naturally occurring isotopes, is 63.5. One of the isotopes has an atomic weig
Darya [45]

<u>Answer:</u> The atomic weight of the second isotope is 64.81 amu.

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of atomic masses of each isotope each multiplied by their natural fractional abundance

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i     .....(1)

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Putting values in equation 1, we get:

\text{Average atomic mass of copper}=[(62.9\times 0.691)+(x\times 0.309)]

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4 0
3 years ago
Make a diagram showing how communication satellites could be used to relay
alexdok [17]

Answer:

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3 0
2 years ago
Read 2 more answers
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The equilibrium law or the Le Chatelier's principle states that when a system encounters a disturbance like a temperature, concentration, or pressure modifications, it will react to restore a new state of equilibrium.  

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8 0
3 years ago
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