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olasank [31]
3 years ago
9

Please give answers from h

Chemistry
1 answer:
Lina20 [59]3 years ago
8 0

Answer:

option b

Explanation:

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Suppose oxygen was much less electronegative than it is, so that hydrogen-oxygen bonds were much less polar and hydrogen bonds c
spayn [35]
Water would have a much lower boiling point much like its other hydrides and it would loss its ability to dissolve polar substances plus it couldn't form water columns so no more cohesion between water molecules
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3 years ago
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What is the density of the marble when the mass = 10g
Marysya12 [62]
The density of marble is between 2.6 and 2.8 grams per cm³ .

Density doesn't depend on how much mass or volume of it you have.
The density of a chip of it is the same as the density of a truckload of it.
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3 years ago
Example of chemical change?
musickatia [10]

Answer:

Burning of paper and log of wood.

Digestion of food.

Boiling an egg.

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3 0
2 years ago
Please, What is the mass of oxygen in 72.0g of water? [ H= 1.0; O = 16.0]
yarga [219]
Convert 72g of water into moles of water using molecular weights.

So water is H2O so add up those molecular weights (H=1 and O=16)

2(1)+(16) = 18 g/mol

Then convert so 72g / (18 g/mol) = 4 mol

Now you can convert mol of water to mol of oxygen. So 4 mol of water is 4 mol of oxygen. Then use oxygen molecular weight to find grams again.

4 mol oxygen * 16 g/mol = 64g of oxygen

If we were doing hydrogen instead of oxygen there would be 8 mol hydrogen in 4 mol of water (2 H’s in every H2O molecule) and since we have 74 grams and oxygen is 64 grams, Hydrogen should be 8 grams. Math to check below

8 mol hydrogen * 1 g/mol = 8g of hydrogen

It all adds to 72 so we are correct.
5 0
3 years ago
Which of the following is converted into chemical energy during photosynthesis?
castortr0y [4]
Photosynthesis is commonly understood as converting light energy to chemical energy. So, C would be the correct answer.
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