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cluponka [151]
2 years ago
6

Q: How many of the molecules shown contain only one covalent bond?

Chemistry
1 answer:
SVETLANKA909090 [29]2 years ago
5 0

Answer:

cl2 - 1 bond

HCl.- 1 bond

N2 - 3 bond

o2 - 2 bond

  • Cl requires one electron to complete it's octave so it share it's one electron with other chlorine and make a single covalent bond
  • H has one electron and Cl requires one so both form one single bond
  • N requires 3 electrons so it form 3 bonds with other N
  • oxygen requires 2 electrons so it forms 2 bond with other oxygen

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krek1111 [17]
The answer would be choice B because the energy decreased by 20 J
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3 years ago
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Im hvaing a hard time getting the right answer
Tanya [424]

Answer:

V=23.9mL

Explanation:

Hello!

In this case for the solution you are given, we first use the mass to compute the moles of CuNO3:

n=2.49g*\frac{1mol}{125.55 g}=0.0198mol

Next, knowing that the molarity has units of moles over liters, we can solve for volume as follows:

M=\frac{n}{V}\\\\V=\frac{n}{M}

By plugging in the moles and molarity, we obtain:

V=\frac{0.0198mol}{0.830mol/L}=0.0239L

Which in mL is:

V=0.0239L*\frac{1000mL}{1L}\\\\V=23.9mL

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6 0
3 years ago
Write the formulas for the ionic compounds formed by the following:
PSYCHO15rus [73]

1. KI

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Explanation:

1. potassium (K⁺) iodine (I⁻) - KI

2. aluminium (Al³⁺) bromine (Br⁻) - AlBr₃

3. caesium (Cs⁺) nitrate (NO₃⁻) - CsNO₃

4. aluminum (Al³⁺) carbonate (CO₃²⁻)  - Al₂(CO₃)₃

Learn more about:

formulas for the ionic compounds

brainly.com/question/13954262

#learnwithBrainly

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