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zmey [24]
3 years ago
14

3. How do plants benefit from human respiration?

Chemistry
2 answers:
klasskru [66]3 years ago
8 0
The answer is C

Why:
A - this is natural
B - water is natural
D - this is also natural
C- this is right because when we breathe out we produce more carbon dioxide then we breathed in.
Ivan3 years ago
4 0
The answer is c because i think that
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Answer:

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What is antimatter?
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A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg
Brut [27]

Answer:  1.0\times 10^2g

Explanation:

Depression in freezing point is given by:

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m= molality

\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}

Weight of solvent (X)= 950 g = 0.95 kg  

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7.2=1\times 3.96\times \frac{xg}{60.06 g/mol\times 0.95kg}

x=1.0\times 10^2g

Thus 1.0\times 10^2g urea was dissolved.

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What color does copper produce when it reacts to chlorine
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The color it produces is Bright green.

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If you know the number of protons what else do you know the number of?
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You know the atomic number
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