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damaskus [11]
4 years ago
11

Hhhhhhhhhheeeeeeeeeeeeeeeeelllllllllppppppppppl.....................

Chemistry
1 answer:
dalvyx [7]4 years ago
3 0
I think C and D is correct
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Methanol and ethanol are said to be miscible in one another. What does this tell you?
sasho [114]

Answer:

That they are miscible in one another

4 0
3 years ago
What is an ionic compound that contains only non metallic elements?
notka56 [123]
<span>it must be a compound of a polyatomic cation (i think ammonium might be the only</span>
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3 years ago
What volume of 12.0 M sulfuric acid is needed to prepare 300.0 mL of 2.50 M solution?
Zepler [3.9K]

Answer:

n=c*V

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=.75 moles of hcl

v=n/c

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convert to mL

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4 0
4 years ago
The heat of combustion (∆H) for an unknown hydrocarbon is -8.21 kJ/mol. If 0.424 mol of the hydrocarbon is burned in a bomb calo
klio [65]

When 0.424 moles of an unknown hydrocarbon (∆Hc = -8.21 kJ/mol) is burned in a bomb calorimeter (C = 1.12 kJ/°C), the change in the temperature is 3.10 °C.

The heat of combustion (∆Hc) for an unknown hydrocarbon is -8.21 kJ/mol. The heat released by the combustion of 0.424 moles of the hydrocarbon is:

Qc = 0.424 mol \times \frac{(-8.21kJ)}{mol} = -3.48 kJ

According to the law of conservation of energy, the sum of the heat released by the combustion (Qc) and the heat absorbed by the bomb calorimeter (Qb) is zero.

Qc + Qb = 0\\\\Qb = -Qc = 3.48 kJ

Given the heat absorbed by the bomb calorimeter (Qb) and the heat capacity of the bomb calorimeter (C), we can calculate the temperature change (ΔT) using the following expression.

Qb = C \times \Delta T\\\\\Delta T = \frac{Qb}{C} = \frac{3.48 kJ}{1.12 kJ/\° C } = 3.10 \° C

When 0.424 moles of an unknown hydrocarbon (∆Hc = -8.21 kJ/mol) is burned in a bomb calorimeter (C = 1.12 kJ/°C), the change in the temperature is 3.10 °C.

Learn more: brainly.com/question/24245395

8 0
3 years ago
Compute 9.3456+2140.56. Round the answer appropriately.
vichka [17]
This is just addition. Put 2140.56 on top, line up 9.3456 under it appropriately. Doing this will give you the answer: 2149.9056
5 0
3 years ago
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