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2 years ago

Which of the statements is correct?

Chemistry

2 answers:

Step2247 [10]2 years ago

8 0

Answer:

<u>A. Magnet has a north pole and south pole.</u>

Explanation:

- A magnet has a north and south pole

- Magnets attract paper clips due to the metals present

- Magnetic fields are not visible

- North pole and south pole attract each other

Only the first statement is correct, the answer is (A).

mr Goodwill [35]2 years ago

7 0

A. Magnet has a north pole and south pole

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A 20. 0-liter flask contains a mixture of argon at 0. 72 atmosphere and oxygen at 1. 65 atmospheres. What is the total pressure

exis [7]

The total pressure of the system is equivalent to the sum of all the pressure of the individual gases. The total pressure of the flask is 2.37 atm.

<h3>What is total pressure?</h3>

According to Dalton's law, the total pressure of the system will be equivalent to the total of the pressures exerted by the individual gases present in the system.

The total pressure of gases is given as,

$\rm P = P_{1} +P_{2}+ P_{3}.....P_{n}$

Given,

The pressure of argon gas = 0.72 atm
The pressure of oxygen = 1.65 atm
Total pressure = P

Substituting values in the above equation:

$\begin{aligned}\rm P &= 0.72 + 1.65\\\\&=2.37\;\rm atm\end{aligned}$

Therefore, 2.37 atm is the total pressure of the flask.

Learn more about total pressure here:

brainly.com/question/11150092

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2 years ago

How does the addition of salt to solid ice affect the melting transition from solid to liquid?

serious [3.7K]

Answer:

Im sure the answer is c

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3 years ago

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2.7g of aluminum metal is placed into solution hydrochloric acid to form aluminum chloride and hydrogen gas.

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Explanation:

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2 years ago

If we read the reaction as X + Y → Z + Q it is<br> A. endothermic<br> B. exothermic

Korvikt [17]

As you can see in the picture we have +ΔH so that means for this reaction we need to GET heat. so the answer is A. endothermic :))
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3 years ago

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Please help with these questions ASAP will give brainlist!! CHEMISTRY

Irina18 [472]

Answer:

Question 1 is 21.0g

Explanation:

50 x 4.18 x 3.1 / 0.444 / 69.6= 21.0

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3 years ago