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Anna11 [10]
3 years ago
10

I need help on dis chem shi if y’all can answer fa me I would appreciate dat

Chemistry
1 answer:
elena55 [62]3 years ago
3 0
I think it’s A I’m not 100% sure but I mean it’s worth a try
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2. The three sub-atomic particles that make up the atom are
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Protons

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After an organism ingests food, the food moves through a series of _______ by which it is broken down and rearranged to form new
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A 55.50 g gas sample of a gas, at stp, has a volume of 15.0 l. calculate the molecular mass of the gas
natta225 [31]
Answer is: the molar mass of gas is 82.83 g/mol.
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3 0
3 years ago
Read 2 more answers
If 75J of heat are applied to 8.4 L of a gas at 732 mmHg and 298K, what is the final temperature, in K, of the gas? Cp for an id
SVEN [57.7K]

Answer:

309 K

Explanation:

Step 1: Convert the pressure to atm

We will use the conversion factor 1 atm = 760 mmHg.

732 mmHg × 1 atm/760 mmHg = 0.963 atm

Step 2: Calculate the moles (n) of the ideal gas

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 0.963 atm × 8.4 L/0.0821 atm.L/mol.K × 298 K

n = 0.33 mol

Step 3: Calculate the temperature change

We will use the following expression.

Q = n × Cp × ΔT

ΔT = Q/n × Cp

ΔT = 75 J/0.33 mol × 20.79 J/mol.K

ΔT = 11 K

Step 4: Calculate the final temperature

T = 298 K + 11 K = 309 K

8 0
3 years ago
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