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Makovka662 [10]
3 years ago
12

What mass of water would you need to have 15 moles of H2O

Chemistry
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

15.0 mol • 18g/H2O =270g

i could be wrong so sorry

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A cube of an unknown metal is 1.25 inches on each side and has a mass of 128.3741 g. What is its' density?
Mademuasel [1]
Hey there!

To find the density of an object, you must use this formula:
Density=Mass/Volume

Knowing that your mass is 128.3741, the only information you need left would be to find the volume of the cube.

Because the side length of the cube is given, you can multiply the length three times in order to find its volume:
1.25*1.25*1.25
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128.3741/1.953125
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Therefore, your density would be 65.7275392 grams per inches cubed.
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3 years ago
Which element is being represented by the electron configuration below? [Ar] 4s2 3d3
Nina [5.8K]
Answer:
chromium (Cr)
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Write a balanced chemical equation (smallest integer coefficients possible) for the reaction between an acid and a base that lea
11Alexandr11 [23.1K]

Answer:

2HClO4(aq) + Ca(OH)2(aq) → Ca(ClO4)2(aq) + 2H2O(l)

Perchloric acid + Calcium hydroxide → Calcium perchlorate + Water.

Explanation:

This is a neutralization reaction where the acid, Perchloric acid reacts completely with an appropriate amount of base, aqueous Calcium hydroxide to produce salt, aqueous Calcium perchlorate and water, liquid H2O only.

During this reaction, the hydrogen ion, H+, from the HClO4 is neutralized by the hydroxide ion, OH-, from the Ca(OH)2 to form the water molecule, H2O.

Thus, it is called a neutralization reaction.

6 0
3 years ago
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