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3 years ago

14

An artificial satellite in which people can have live and work for long periods is called a

1 answer:

Ratling [72]3 years ago

8 0

Is this astronomy? If it is, Space Station

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3 years ago

All of the elements in a family or group have similar chemical properties. which of the following statements best explains why t

Rashid [163]

C) they have same valence electrons

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3 years ago

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Where are the reactants in chemical equation located

yKpoI14uk [10]

They are on the left side of the equation.

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3 years ago

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A 78.0 g sample of an unknown compound contains 12.4 g of hydrogen. what is the percent by mass of hydrogen in the compound?

AleksandrR [38]

Formula to find the percent composition of an element in a compound is $\frac {MolarMassOfElement}{MolarMassOfCompound}*100$ .

Now enter the variables into the formula.

$\frac {12.4}{78.0}*100 = 15.897$ %
Round to 3 significant figures. 15.897% = 15.9%

The answer is 15.9% H

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3 years ago

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KengaRu [80]

Answer:I’m not for sure

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3 years ago