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3 years ago

66.0g of dry ice (solid carbon dioxide)

Chemistry

1 answer:

d1i1m1o1n [39]3 years ago

3 0

Answer:

Dry Ice is frozen CO2

Explanation:

we just need to convert the 10g into moles

Carbon has atomic mass of 12, and oxygen has atomic mass of 16, so molar mass = 12 + 16(2)= 44

Do 66/44 to get the moles = 1.5 (ans)

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At 25°C, the equilibrium constant Kc for the reaction 2A(aq) ↔ B(aq) + C(aq) is 65. If 2.50 mol of A is added to enough water to

Svet_ta [14]

Answer:

0.146 M

Explanation:

Equation for the reaction :

2A(aq) ↔ B(aq) + C(aq)

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= 2.5 M

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Initial 2.50 0 0

Change - 2x + x + x

Equilibrium 2.50 - 2x +x +x

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$65 = (\frac{[x]}{[2.5-2x]})^2$

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$8.062 = \frac{x}{2.5-2x}$

8.062(2.5 - 2x) = x

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20.155 = 16.124x+x

20.155 = 17.124x

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3 years ago

Four atoms have the numbers of protons and neutrons given below.

Makovka662 [10]

Answer:

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Explanation:

isotopes : are masses of atoms with the same number of proton and electron but different neutron .

W and X have the same number of protons and different number of neutrons.

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