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Llana [10]
3 years ago
15

. Using improved chemistry equipment in the late 1700s, chemists

Chemistry
1 answer:
Alex_Xolod [135]3 years ago
8 0

Answer:vC

Explanation:

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When 1 mole of H2(g) reacts with F2(g) to form HF(g) according to the following equation, 542 kJ of energy are evolved H2(g) + F
topjm [15]

Answer: The reaction is exothermic. The value of q is  -542 kJ.

Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and  for the reaction comes out to be positive.

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and  for the reaction comes out to be negative.

Thus H_2(g)+F_2(g)\rightarrow 2HF(g) evolves heat , it is exothermic in nature. The value of q is -542kJ.

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3 years ago
____Cl2+____H2=____HCl
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The equilibrium constant, K for the following reaction is 1.16x103 at 228 K. 2NOBr(g)2NO(g) +Br2(g) When a sufficiently large sa
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You find a compound composed only of element X and chlorine and you know that the compound is 13.10% X by mass. Each molecule of
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Answer:

Explanation:

So, the formula for the compound should be:

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M_{Cl}=35.45g/mol\\

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212.7g\rightarrow 86.9\%\\x\rightarrow 13.1\%\\\\x=\frac{212.7g*13.1}{86.9} =32.06g

As we used 1 mol, we know that the molar mass is 32.06g/mol

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1 point<br> How many moles of CO2 are there in 100.0 grams of CO2?
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44.0095 you're welcome hope this helps

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3 years ago
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