3 years ago

The transfer of nitrogen from the atmosphere to the soil, to living things, and back to the atmosphere is...

Chemistry

1 answer:

g100num [7]3 years ago

3 0

Answer:

Explanation:

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What kind of material makes ice cream

aivan3 [116]

Is it milk and nitrogen? Hope this helps!

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10. Hydrogen peroxide (H2O2: M = 34 g mol-1) is a powerful oxidising agent that is used in concentrated solution in rocket fuel

Lubov Fominskaja [6]

Answer:

The molality of solution=12.605 m

Explanation:

We are given that

Molar mass of Hydrogen peroxide, M=34 g/mol

Density of solution, $\rho=1.11gcm^{-3}$

30% Means mass of solute (Hydrogen peroxide)=30 g

Mass of solvent =100-30=70 g

Total mass of solution, m=100 g

Number of moles of solute= $\frac{given\;mass}{molar\;mass}$

Using the formula

Number of moles of hydrogen peroxide= $\frac{30}{34}$

Now, molality of solution

$m=\frac{number\;of\;moles\;of\;solute}{mass\;of\;solvent}\times 1000$

$m=\frac{30}{70\times 34}\times 1000$

$m=12.605 m$

Hence, the molality of solution=12.605 m

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4 years ago

A light bulb contains argon gas at a temperature of 295 k and at a pressure of 75 kilopascals. the light bulb is switched on, an

Nostrana [21]

Normally for these types of questions (2 different situations), you can use:
P*V/T = P*V/T
As long as you don't confuse the different values up
Since V is constant, you can say that P/T (before heating up) = P/T (after heating up)
So 75000/295 = P/418

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How many atoms of each element are represented in the following: 2S03

faust18 [17]

Answer:

For sulfur there are two atoms and for oxygen there are 6 atoms.

Explanation:

Sulfur = 2×(1)

= 2 atoms

Oxygen = 2×(3)

=6 atoms

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3 years ago

What scientist explained the theory of atomic structure by relating it to the planetary model?

bearhunter [10]

Answer: Rutherford

Explanation:

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