3 years ago

In stars, What atom is used with hygrogen atom in order to produce energy?

Chemistry

1 answer:

ch4aika [34]3 years ago

7 0

In stars helium atoms are used with hydrogen atoms in order to produce energy.
Answer: A )

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1. NaOH mass of a solution of 200g in which its percentage is 25%. What mass of sulfuric acid solution is needed to completely n

Ede4ka [16]

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$m_{H2SO4$ = 61.25 g

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2 : 1 : 1 : 2

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⇒ $n_{H2SO4}$ = 1.25 × 1 ÷ 2 = 0.625 (moles) ⇒ $m_{H2SO4}$ = 0.625 × 98 = 61.25 g

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