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Shalnov [3]
2 years ago
5

Help please

Chemistry
1 answer:
gogolik [260]2 years ago
4 0

Answer:

16 km/2 sec=8km/sec

Explanation:

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Independent Variable: a variable that you can change in an experiment

Dependent Variable: something that changes as you change the independent variable

control variable: something that is not changed throughout the experiment

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How many grams are in 9.05 x 1023 atoms of silicon?
Sergeu [11.5K]

Explanation:

Number of moles(n)=Number of atoms(N)/Avogadro's constant.

Avogadro's constant=6.02×10²³

so we have

n=9.05×10²³/6.02×10²³

n=1.0503moles.

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6 0
2 years ago
10. Identify the products in the combustion of methane.
Oksanka [162]

Answer:

a. CO2 and H20

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CH4[g] + 2 O2[g] -> CO2[g] + 2 H2O[g] + energy

One molecule of methane, (the [g] referred to above means it is gaseous form), combined with two oxygen molecules, react to form a carbon dioxide molecule, and two water molecules usually given off as steam or water vapor during the reaction and energy.

8 0
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