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ladessa [460]
3 years ago
7

Question 15

Chemistry
1 answer:
Artyom0805 [142]3 years ago
6 0

Answer:

b. 600 k

hope it help

.

.

thank you so much.

tysm

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Which list of elements is arranged in order of increasing electronegativity?
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Which of the following factors would reduce the yield of a reaction?
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The products being more stable than the reactants is the factor which would reduce the yield of a reaction and is denoted as option B under standard conditions.

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2 years ago
Calculate the number of hydrogen atoms in a sample of hydrazine . Be sure your answer has a unit symbol if necessary, and round
gladu [14]

Answer:

atoms \ H= 9.767x10^{24}atoms

Explanation:

Hello!

In this case, considering that the mass of hydrazine is missing, we can assume it is 130.0 g (a problem found on ethernet). In such a way, since we need a mass-mole-atoms relationship by which we can compute moles of hydrazine given its molar mass (32.06 g/mol), then the moles of hydrogen considering one mole of hydrazine has four moles of hydrogen and one mole of hydrogen has 6.022x10²³ atoms (Avogadro's number); therefore, we proceed as shown below:

atoms \ H=130.0gN_2H_4*\frac{1molN_2H_4}{32.06gN_2H_4} *\frac{4molH}{1molN_2H_4} *\frac{6.022x10^{23}atoms}{1molH}\\\\atoms \ H= 9.767x10^{24}atoms

Notice 130.0 g has four significant figures, therefore the result is displayed with four as well.

Best regards!

7 0
3 years ago
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