1 year ago

What is the total number of grams of mg consumed when 0.50 mole of h2 is produced

Chemistry

1 answer:

rosijanka [135]1 year ago

4 0

Answer:

12 grams

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How many molecules are in 2.0 moles of carbon dioxide?

zubka84 [21]

Answer:

There are 1.51 x 1024 molecules of carbon dioxide in 2.50 moles of carbon dioxide.

Explanation:

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2 years ago

H2O+O2=H202, how would I balance this equation?

Sergio [31]

Answer:

2H2O2→2H2O+O2

Explanation:

This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

2H2O2→2H2O+O2

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2 years ago

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Answer:

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Explanation:

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2 years ago

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tiny-mole [99]

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$\boxed{\pmb{\color{gold}{\sf{2SO_{2}(g) + O_{2}(g)\dashrightarrow 2SO_{3}(g)}}}}$

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7 0

2 years ago

Read 2 more answers

You are instructed to create 900. mL of a 0.29 M phosphate buffer with a pH of 7.8. You have phosphoric acid and the sodium salt

Aleksandr [31]

Answer:

B and C

Explanation:

When we have to do a buffer solution we always have to choose the reaction that has the pKa closer to the desired pH value. When we find the pKa values we will obtain:

$pKa_1=-Log[6.9x10^-^3]=2.16$

$pKa_2=-Log[6.2x10^-^8]=7.20$

$pKa_3=-Log[4.8x10^-^13]=12.31$

The closer value is pKa2 with a value of 7.2. Therefore we have to use the second reaction. In which $H_2PO_4^-^1$ is the acid and $HPO_4^-^2$ is the base. Therefore the answer for the first question is B and the answer for the second question is C.

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2 years ago