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NeTakaya
3 years ago
15

Whats the most common chemical element in the earths crust?

Chemistry
1 answer:
Alchen [17]3 years ago
5 0

Answer:

Oxygen

Explanation:

it is 47% of the earth's crust.the 2nd would be silicon if you wanted to know.

have a good day maam!

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A solution is made by mixing 12.54 grams of NaNO3 with enough water to make 2.5 L of solution. What is the molarity?
Alex

Answer:

is there a table or an equation for that ??

4 0
3 years ago
Why do organisms need nitrogen?
RSB [31]
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6 0
3 years ago
This reaction was at equilibrium when 0.2 atm of iodine gas was pumped into the container, what happened to the equilibrium and
n200080 [17]

Answer:

Q was < K. Partial pressure of hydrogen decreased, iodine increased

Explanation:

<em>After iodine was added the Q was [Select] K so the reaction shifted toward the Products [Select] ,The partial pressure of hydrogen [Select], Iodine [Select] |,and hydrogen iodide Decreased</em>

Based on the equilibrium:

H2(g) + I2(g) ⇄ 2HI(g)

K of equilibrium is:

K = [HI]² / [H2] [I2]

<em>Where [] are concentrations at equilibrium</em>

And Q is:

Q = [HI]² / [H2] [I2]

<em>Where [] are actual concentrations of the reactants.</em>

<em />

When the reaction is in equilibrium, K=Q.

But as [I2] is increased, Q decreases and Q was < K

The only concentration that increases is [I2], doing partial pressure of hydrogen decreased, iodine increased

7 0
3 years ago
The rate at which a candle burns in millimeters per minute is?
Serga [27]

It would be C / Quantitative

5 0
3 years ago
Read 2 more answers
How many atoms are in 15 grams of H2O
gulaghasi [49]

Answer:

5.014x10^23 atoms

Explanation:

first start with given over 1 so 15 over 1 then multiply that by 1 over 18.01528 and then multiply it by 6.022x10^23 over 1 which then gives you the answear hope this helps god bless

4 0
3 years ago
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