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koban [17]
3 years ago
7

Can someone help me please on this question like quick?

Chemistry
1 answer:
harkovskaia [24]3 years ago
3 0
B
Solar energy does not give off toxic wastes as nuclear energy does (ex. Chernobyl)
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Is. Mg(s) --------------&gt; Mg2+(aq) + 2e−<br><br><br><br>oxidation or reduction?​
Kruka [31]

Answer:

Oxidation

Explanation:

Mg loses 2e- for it to gain it's stability hence the reaction above is oxidation

note: Oxidation is the loss of electrons while reduction is the gain of electrons

5 0
3 years ago
A student wants to make 5.00% solution of rubidium chloride using 0.37 g of the substance. what mass of water will be needed to
chubhunter [2.5K]

Answer:-

7.03 g

Explanation:-

Let the mass of water needed be M.

So total mass = M + 0.37

Now 5% of this solution has 0.37g of rubidium chlorude.

∴ (M +0.37) x (5/100) = 0.37

M +0.37 = 0.37 x 100/5

M + 0.37 = 7.4

M = 7.4-0.37

=7.03

Thus water to be added is 7.03 gram

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3 years ago
How does density change as you go deeper in earth
stepladder [879]
Answer:
The density increases.
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As you go deeper in depth, pressure increases. Density = mass/volume. The layers beneath us due to pressure get packed to the point of being very dense.
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How many grams of nitric acid, HNO3, are required to neutralize (completely react with) 4.30 g of Ca(OH)2?
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8.25 g HNO3 (please correct me if I'm wrong!)

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