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aev [14]
3 years ago
11

Hey I have a chemistry problem pls tell me how do you find the percentage thx...

Chemistry
1 answer:
Julli [10]3 years ago
4 0

Answer:

88.24

Explanation:

find the total mass of the compound using there RAM which has been give then the mass of caborn

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Given any two elements within a group, is the element with the larger atomic number likely to have a larger or smaller atomic ra
zhenek [66]

Answer:

Atomic radius of sodium = 227 pm

Atomic radius of potassium = 280 pm

Explanation:

Atomic radii trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

Consider the example of sodium and potassium.

Sodium is present above the potassium with in same group i.e, group one.

The atomic number of sodium is 11 and potassium 19.

So potassium will have larger atomic radius as compared to sodium.

Atomic radius of sodium = 227 pm

Atomic radius of potassium = 280 pm

3 0
3 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
  • p=89.9(8.314)(12)/300
  • P=8969.14/300
  • P=29.89atm
  • P=29.9atm

Done!

7 0
2 years ago
A strong acid with a concentration of 0.01 Mol/L would have a pH of __________.
BARSIC [14]

Answer:

2

Explanation:

the pH of the strong acid solution will be

pH = -log[H+] = -log[0.01] =  2

5 0
3 years ago
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De Broglie predicted that in his equation. The ball is not a particle.<span>
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The atomic number of an atom or element is the number of.
blagie [28]

Answer: the number of a chemical element in the periodic system,

Explanation:

5 0
2 years ago
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