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murzikaleks [220]
2 years ago
13

How many molecules are in 15.0 g of oxygen gas (O2)?

Chemistry
1 answer:
frosja888 [35]2 years ago
3 0

Answer:

2.82*10^23

Explanation:

please see attached for work!

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it takes 513 kj to remove a mole of electrons from the atoms at the surface of a piece of metal. how much energy does it take to
schepotkina [342]

Answer:

The right solution is "8.5\times 10^{-19} \ joule".

Explanation:

As we know,

1 mole electron = 6.023\times 10^{23} \ no. \ of \ electrons

Total energy = 513 \ KJ

                     = 513\times 1000 \ joule

For single electron,

The amount of energy will be:

= \frac{513\times 1000}{(6.023\times 10^{23})}

= 8.5\times 10^{-19} \ joule

8 0
3 years ago
Which correctly describes the relationship between genes and chromosomes?​
Vlada [557]

Answer:

Chromosomes are structures within cells that contain a person's genes.

Explanation:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

6 0
2 years ago
What feature of New York is located about 44°N, 74°W?
galben [10]
The Adirondacks is located there
5 0
2 years ago
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The molecule <br> mass of sodium oxide na2o is
maxonik [38]
it is 61.97894 g/mol
7 0
2 years ago
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2. Which is a product in the following chemical reaction? CH4 + 202 - CO2 + 2H20
irga5000 [103]

Answer:

Co2 and 2H2O are products

Explanation:

In this chemical equation, CH4 and 2O2 react with each other to create a double replacement reaction which creates CO2 and 2H20

Hope this helps!

7 0
2 years ago
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