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Alex787 [66]
3 years ago
10

How many moles of calcium chloride are there when you have 55.5 grams of calcium chloride(CaCl2)

Chemistry
1 answer:
Gnesinka [82]3 years ago
3 0

Answer:

0.5mol

Explanation

Please mark answer as brainliest

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What is the fully balanced equation of( strontium thiocyanate plus potassium yield) I need the fully balanced equation and produ
jarptica [38.1K]

A fully balanced equation of strontium thiocyanate plus potassium yields an aqueous solution of iron (III) thiocyanate and potassium nitrate. ( I think it's : Fe(NO3)3 (aq) + KSCN (aq)


Answer: Iron thiocyanate and potassium nitrate


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3 years ago
What is the total pressure in units of kPa in a 7.85 L container that contains 4.45 moles of N2 and 2.45 moles of O2 at a temper
IgorC [24]

Answer:

Total pressure = 22.15 atm

Explanation:

Given data:

Total pressure = ?

Volume of container = 7.85 L

Number of moles of N₂ = 4.45 mol

Number of moles of O₂ = 2.45 mol

Temperature = 307 K

Solution:

Pressure of N₂:

PV = nRT

P = nRT/V

P = 4.45 mol ×0.0821 atm.L/mol.K ×307K / 7.85L

P = 112.16 atm.L/7.85 L

P = 14.28 atm

Pressure of O₂:

PV = nRT

P = nRT/V

P = 2.45 mol ×0.0821 atm.L/mol.K ×307K / 7.85L

P = 61.75 atm.L/7.85 L

P = 7.87 atm

Total pressure = P(N₂) + P(O₂)

Total pressure = P( 14.28 atm)  +  P( 7.87 atm)

Total pressure = 22.15 atm

6 0
3 years ago
Which statements best describe displacement? Check all that apply.
Dafna11 [192]

Answer:

It's 2,3 and 5❤ It's the right answer trust me<3

4 0
3 years ago
Please help with this :D will mark brainliest!!!
marysya [2.9K]

Answer:

Your answer is potASSium Iodide

Explanation:

I took the test yesterday

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7 0
3 years ago
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