3 years ago

CONTACT FORCES

Chemistry

2 answers:

Verizon [17]3 years ago

7 0

C. Electromagnets use force

nekit [7.7K]3 years ago

5 0

Answer:

C. Electromagnets use contact force

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What happens when carbon dioxide is passed through lime water for a long time? write with equation

Vlada [557]

Answer:

when CO2 gas is passed through lime water it turns milky due to the formation of calcium carbonate which formula is CaCO3.

Ca(OH)2+ CO2------ CaCO3

when excess of carbon dioxide is passed through calcium carbonate calcium hydrogen carbonate is formed and solution become colourless.

CaCO3+CO2------ Ca(HCO3)

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3 years ago

The combination of all the forces on an object is called?

krek1111 [17]

Answer:

net force

Explanation:

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A gas is collected over water at a certain temperature. The total pressure is 762. mmHg. The vapor pressure of water at this tem

ehidna [41]

I Believe The Answer Is D.

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3 years ago

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Suggest why it might be difficult and dangerous to test sodium for electrical conductivity?

lukranit [14]

Answer:

It might cause fire or extreme smoke.

Explanation:

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2 years ago

Dinitrogen pentoxide is used in the preparation of explosives. If 7.93 mol of

Tpy6a [65]

The volume of O₂ produced: 84.6 L

<h3>Further explanation</h3>

Given

7.93 mol of dinitrogen pentoxide

T = 48 + 273 = 321 K

P = 125 kPa = 1,23365 atm

Required

Volume of O₂

Solution

Decomposition reaction of dinitrogen pentoxide

2N₂O₅(g)→4NO₂(g)+O₂ (g)

From the equation, mol ratio N₂O₅ : O₂ = 2 : 1, so mol O₂ :

= 0.5 x mol N₂O₅

= 0.5 x 7.93

= 3.965 moles

The volume of O₂ :

$\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{3.965\times 0.082\times 321}{1.23365}\\\\V=84.6~L$

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3 years ago