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MaRussiya [10]
3 years ago
6

Jill and Susan were absent when the instructions were given for the lab investigation. They gathered their materials and watched

their classmates see what to do, not taking the time to read the instructions. Explain how Jill and Susan violated safety procedures.
Chemistry
2 answers:
VashaNatasha [74]3 years ago
8 0

Answer:

They violated safety procedures by not reading the instructions, which could have put everyone in danger because they're dealing with chemicals and if you mix the wrong chemicals together it could explode or release some type of gas that is not good to breathe in.

Explanation:

MrRissso [65]3 years ago
6 0
Jill and Susan violated safety procedures by not properly listening and/or reading over the instructions to know all the materials, steps, and equipment they need for the lab. Hope this helps!
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Acetylene (C2H2), an important fuel in welding, is produced in the laboratory when calcium carbide (CaC2) reacts with water: CaC
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Answer:

There are 1.287 grams of acetylene collected

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Total gas pressure = 909 mmHg

Vapor pressure of water = 20.7 mmHg

Pressure of acetylene = 909 mmHg - 20.7 mmHg = 888.3 mmHg

1mmHg = 1 torr

22 ° C + 273.15 = 295.15 Kelvin

Ideal gas law ⇒ pV = nRT

⇒ with p = pressure of the gas in atm

⇒ with V = volume of the gas in L

⇒ with n = amount of substance of gas ( in moles)

⇒ with R = gas constant, equal to the product of the Boltzmann constant and the Avogadro constant (62.36 L * Torr *K^−1 *mol^−1)

⇒ with T = absolute temperature of the gas (in Kelvin)

888.3 torr * 1.024 L = n * 62.36 L * Torr *K^−1 *mol^−1 * 295.15 K

n = 0.04942 moles of C2H2

Mass of C2H2 = 0.04942 moles x 26.04 g/mole = 1.287 g

There are 1.287 grams of acetylene collected

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