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Masja [62]
3 years ago
5

3. compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ___.

Chemistry
2 answers:
Reil [10]3 years ago
3 0
C) Lower, 

They're lower because molecular solids form IMF's such as Dipole-Dipole and H-Bonds, while Ionic bonds are much more powerful.
olga_2 [115]3 years ago
3 0

The answer to your question is

c. lower

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What is the approximate percent by mass of potassium in KHCO3?
lozanna [386]

Answer:

The mass percent of potassium is 39%

Option C is correct

Explanation:

Step 1: Data given

Atomic mass of K = 39.10 g/mol

Atomic mass of H = 1.01 g/mol

Atomic mass of C = 12.01 g/mol

Atomic mass of O = 16.0 g/mol

Step 2: Calculate molar mass of KHCO3

Molar mass KHCO3 = 39.10 + 12.01 + 1.01 + 3*16.0

Molar mass KHCO3 = 100.12 g/mol

Step 3: Calculate mass percent of potassium (K)

%K = (atomic mass of K / molar mass of KHCO3) * 100%

%K = (39.10 / 100.12) * 100%

%K = 39.05 %

The mass percent of potassium is 39%

Option C is correct

8 0
3 years ago
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telo118 [61]

Answer:

<h2>Dead & Decaying Organisms</h2>

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5 0
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Statement A is true
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