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IgorC [24]
3 years ago
15

Use the data in the table given below to calculate an approximate ΔH∘ in kilojoules for the synthesis of hydrazine from ammonia:

2NH3(g)+Cl2(g)⟶N2H4(g)+2HCl(g)
Chemistry
1 answer:
a_sh-v [17]3 years ago
7 0
On the left (reactant) side you have 6 N-H bonds and 1 Cl-Cl bond 
<span>On the right (product) side you have 4 N-H bonds, 1 N-N bond and 2 H-Cl bonds </span>

<span>Add up the bond energies for each side (multiplying by the number of bonds) and calculate the difference for your ΔHº</span>
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the hcp ordered 0.2 mg of methylergonovine, and the vial contains 0.8 mg/ml. how many ml of methylergonovine should the nurse dr
iogann1982 [59]

The volume (in mL) of methylergonovine the nurse should draw up in the syringeis is 0.25 mL

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the concept of density, we can obtain the volume of methylergonovine. Details below

<h3>How to determine the volume </h3>

The following data were obtained from the question:

  • Mass = 0.2 mg
  • Density = 0.8 mg/mL
  • Volume =?

Density = mass / volume

Cross multiply

Density × volume = mass

Divide both sides by density

Volume = mass / density

Volume = 0.2 / 0.8

Volume = 0.25 mL

Learn more about density:

brainly.com/question/952755

#SPJ1

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1 year ago
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hope this helps

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