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choli [55]
2 years ago
9

Which statement correctly describe the nucleus of the atom

Chemistry
1 answer:
Elza [17]2 years ago
5 0

Protons,neutrons,electrons

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Write the complete balanced equation for the reaction between CaCO3 and KCI
EleoNora [17]

CaCO3 + 2KCL ⇒ CaCl2 + K2CO3

It is balanced as so based on the charges given on the periodic table and polyatomic ions.

Calcium has the charge of 2 but CO3 also shares the same charge, thus cancelling that out.

Potassium has a charge of 1 while Chlorine also shares a charge of 1, also cancelling it out.

Thus, if it performs a double replacement reaction, they would take these charges to the new elements that do not cancel out their charges.

Therefore, we need the coefficient of 2 in front of Potassium Chloride in order to balance the equation as on the products side of the equation, Potassium and Chlorine both have a subscript of 2.

Hope this helps!

5 0
3 years ago
Which state of matter is not easily compressed, but easily changes shape to fill its container
Dafna1 [17]
A liquid is the answer :)
8 0
3 years ago
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The 20 amino acids vary only in their?
Helen [10]
Amino groups due to the chain can extend longer than the other
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Physical properties of Ammonium <br> Sulphate
Sliva [168]

the physical properties of ammonium  sulphate are colorless gas, less dense than air, pungent shell, very soluble in water, alkaline gas

6 0
3 years ago
The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant
zavuch27 [327]

Answer: M = 22/ (i x28.948)

Explanation:

Pi = osmotic pressure = 22atm

T = Temperature = 353K

M = Molarity = ?

R = gas constant = 0.082atm.L/mol/K

i = van’t Hoff factor

Pi = iMRT

M= Pi /(iRT) = 22 / ( i x 0.082 x 353)

M = 22/ (i x28.948)

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