Which metals will be able to reduce copper ions in solution

Chemistry

1 answer:

Step2247 [10]3 years ago

5 0

It would be Iron, hope this helps, good luck.

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Why does the chair in which you are currently sitting retain its same shape over time?

kotykmax [81]

Answer: Option (a) is the correct answer.

Explanation:

A chair is a solid substance and it is known that particles in a solid are closely held together by strong intermolecular forces of attraction.

Therefore, solids are rigid and have a definite shape.

Thus, we can conclude that the chair in which you are currently sitting retain its same shape over time because the particles of the chair are strongly held together.

4 0

3 years ago

Which of the following is the correct balanced equation for the reaction in which methane (CH4) burns in atmospheric oxygen (0₂)

Talja [164]

Answer: $\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}$

Explanation:

The unbalanced equation is

$\text{CH}_{4}+\text{O}_{2} \longrightarrow \text{CO}_{2}+\text{H}_{2}\text{O}$

Balancing this equation, we get:

$\boxed{\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}}$

8 0

2 years ago

3. If 175 grams of nitrogen reacted with hydrogen to make hydrogen, how much ammonia would be needed?

zmey [24]

Answer:

37.5 g of H₂

Explanation:

N₂ (28g) + 3H₂ (6g) => 2NH₃ (34g)

Every 28g of N₂ needs 6g of H₂

=> Every 7g of N₂ needs 1.5g of H₂

=> 175g of N₂ needs 1.5 x 25 g of H₂

=> 37.5 g of H₂

7 0

2 years ago

If it takes three "breaths" to blow up a balloon to 1.2 LL, and each breath supplies the balloon with 0.060 moles of exhaled air

lara31 [8.8K]

Answer:

0.45 moles of air are in a 3.0 L balloon

Explanation:

The given problem can be solved by using unitary method.

Firstly, we have to find out how many breaths are equivalent to 3.0 L. Secondly, we have to find out how many moles of air are supplied corresponding to the calculated number of breaths.

1.2 L = 3 breaths

So, 3.0 L = $\frac{3}{1.2}\times 3.0$ breaths = 7.5 breaths