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Harlamova29_29 [7]
3 years ago
9

Calculate the percentage mass of calcium chloride, CaCi^2​

Chemistry
1 answer:
Firdavs [7]3 years ago
7 0

Answer: m-%(Ca) = 40.08 / 110.98

Explanation: molar mass of CaCl2 is 40.08+ 2·35.45 = 110.98

Think you have one mole substance. It contains 40.08 g Ca

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How do you solve (1 x 1025) =3 x 10
Mrrafil [7]

Hey There!!~

Your best answer choice is 10280 or 10,280.

Because, 1 x 1025 = 1025 + 3 = 1028 x 10 = 10280 or 10,280.

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4 0
3 years ago
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A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm,
inna [77]

Answer:

3.676 L.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If n and P are constant, and have different values of V and T:

(V₁T₂) = (V₂T₁)

  • Knowing that:

V₁ = 3.5 L, T₁ = 25°C + 273 = 298 K,

V₂ = ??? L, T₂ = 40°C + 273 = 313 K,

  • Applying in the above equation

(V₁T₂) = (V₂T₁)

∴ V₂ = (V₁T₂)/(T₁) = (3.5 L)(313 K)/(298 K) = 3.676 L.

7 0
3 years ago
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Can you please help me it’s not a hard question
aliya0001 [1]
The answer for acceleration is m/s^2
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2 years ago
Butanoic acid + 2 propanol
Talja [164]

Answer:

propyl butanoate

Explanation:

8 0
3 years ago
Which of the following lists the elements in order of increasing malleability?
Bogdan [553]
The best and most correct answer among the choices provided by your question is the second choice or letter B.

The list the elements in order of increasing malleability would be: <span>Se, Sb, Sn.
</span><span>
Since, Se = nonmetal, Sb = metalloid, Sn= metal </span>


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
7 0
3 years ago
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