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ELEN [110]
2 years ago
15

I really need help, i don’t understand this at all

Chemistry
1 answer:
kirill [66]2 years ago
6 0

Answer:

CaO - inorganic

C₂H₄(OH)₂ - organic

Ca(OH)₂ - inorganic

CH₄ - organic

NaCl - inorganic

C₃H₈ - organic

Explanation:

Organic compounds have carbon (C) in it.

For example, CaO has calcium and oxygen, but no carbon so it's an inorganic compound.  However, C₂H₄(OH)₂ does have carbon, making it an organic compound.

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A) Compute the repeat unit molecular weight of polystyrene. B) Compute the number-average molecular weight for a polystyrene for
Andrej [43]

Answer:

Explanation:

In Polystrene, the molecular formula for the repeat unit = C_8H_8;

and the atomic weights of Carbon C = 12.01 g/mol

For Hydrogen, it is 1.01 g/mol

Hence, the repeat unit molecular weight is:

m = 8 (12.01 g/mol)+8(1.01 g/mol)

m = 96.08 g/mol + 8.08 g/mol

m = 104.16 g/mol

The degree of polymerization = no-average molecular weight/repeat unit molecular weight.

Mathematically;

DP = \dfrac{\overline M_n}{m}

\overline M_n= DP \times m

\overline M_n= 25000 \times 104.16 \ g/mol

\overline M_n= 2604000  \ g/mol

7 0
2 years ago
I know that one of them is multiple choice but i’m not sure which one it is.
Evgen [1.6K]

Explanation:

1. neutrons

2. protons

3. protons and neutrons

4. neutrons

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I'm not sure with 1 and 4, sorry :<

5 0
2 years ago
What will the pressure be if 89.9 moles of argon are contained in a 12.0 L cylinder that is pressurized at a temperature of 300
irinina [24]
  • P=nRT/V
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  • P=8969.14/300
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Done!

7 0
2 years ago
Explain how Bohr's model built on the ideas of Einstein and Planck.
AlekseyPX

Explanation:

Bohr built on Nicholson's idea by adopting the requirement that the angular momentum can have only certain discrete values related to Planck's constant. However Bohr's atom has many orbits for the electrons.

7 0
3 years ago
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Bas_tet [7]
D. Is Oxidized Hope I helped.
4 0
3 years ago
Read 2 more answers
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