3 years ago

Which part of a chemical formula indicates the number of copies of molecules or compounds?

1 answer:

5 0

That would be the super script, which is the number that appears in front of the molecules composition.
Ex. 3H2O: The 3 is the super script, and shows that there is 3 water molecules

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When 32 grams of aluminum react, the actual yield is 105.5 grams, what is the percent yield?

user100 [1]

Answer:

329.7%

Explanation:

Percent Yield = Actual Yield/ Theoretical Yield x 100%

Percent Yield = 105.5g/32 x 100% = 329.69 ≈ 329.7 %

5 0

3 years ago

Which force keeps the planets in orbit? 1. gravity 2.kinetics 3.mass 4.friction

zvonat [6]

Gravity is the force that keeps the planets in orbit.

4 0

3 years ago

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What is the density of a liquid if it's volume is 125 mL and it's mass is 50g?

masha68 [24]

Answer:

0.4g/ml

Explanation:

density= mass/volume

density=50g/125ml

density=0.4g/ml

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2 years ago

A freighter ship carrying a cargo of uranium hexafluoride sank in the English Channel in late August 1984. The cargo of uranium

DiKsa [7]

Answer:

Heyo (Ish Mash Potato) XD

Explanation:

a freighter carrying a cargo of uranium hexafluoride sank in the english channel in 1984. the cargo of uranium hexafluoride weighed 2.25x10 to the eight power. kg and was contained in 30 drums, each having a volume of 1.62x10 to the sixth power L. what is the density in g/ml, of uranium hexafloride.

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3 years ago

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A meteor falls toward Earth's surface. Given that the acceleration due to

ICE Princess25 [194]

Answer:

E = 147000 J

Explanation:

Given that,

The mass of meteor, m = 50 kg

The altitude of the meteor, h = 300 m