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2 years ago

What is the function of autotrophs in the carbon cycle?

1 answer:

5 0

Carbon dioxide gas exists in the atmosphere and is dissolved in water. Photosynthesis converts carbon dioxide gas to organic carbon, while respiration cycles the organic carbon back into carbon dioxide gas.

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What is the pressure of 20.5 mols of helium gas at 444 K and 999 L

Charra [1.4K]

Answer:

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Explanation:

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2 years ago

In which row has Aaron made an error in his chart?

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Answer:Row 2

Explanation:

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3 years ago

Determine if the chemical equation is balanced or not balanced. 1N2 + 1H2> NH3

almond37 [142]

Answer:

Explanation:

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2 years ago

Is this right:) please tell me

viva [34]

Answer:

I think that:

The tendency of an object to resist changes in motion: inertia

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Explanation:

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2 years ago

g What is the molarity of hydrochloric acid if 40.95 mL of HCl is required to neutralize 0.550 g of sodium oxalate, Na2C2O4

kykrilka [37]

Answer:

0.0002 M

Explanation:

The molarity of the HCl required would be 0.0002 M.

First, let us consider the balanced equation of the reaction:

$Na_2C_2O_4 + 2HCl = 2NaCl + H_2 + 2CO_2$

Stoichiometrically, 1 mole of $Na_2C_2O_4$ reacts with 2 moles of $HCl$ for a complete neutralization reaction.

Recall that: mole = $\frac{mass}{molar mass}$

Mole of 0.550 g sodium oxalate = 0.550/134 = 0.0041 mole

If 1 mole $Na_2C_2O_4$ requires 2 moles HCl, then 0.0041 mole will require:

0.0041 x 2 = 0.0082 mole HCl

Volume of the HCl = 40.95 L

Molarity = mole/volume

Hence, molarity of the HCl = 0.0082/40.95 = 0.0002 M

7 0

3 years ago