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3 years ago

Which metal is more active than NI and less active than Zn?

Chemistry

2 answers:

Mademuasel [1]3 years ago

7 0

Answer : The correct option is, (2) Cr (Chromium)

Explanation :

The reactivity series of metal are arranged of the reactivity from the highest to the lowest. Reactivity series is used to determine the products of the single displacement reactions. In the single displacement reaction, the most reactive metal displaces the least reactive metal.

From the given reactivity series we conclude that there are two metal (Mg and Cr) are more reactive metal than the Ni and there are two metal (Pb and Cr) are less reactive metal than the Zn. So, the Cr (Chromium) is the metal which is more active than Ni and less active than Zn.

Hence, the correct option is, (2) Cr

jeka943 years ago

5 0

Cr is more active than nickel and less active than zinc.

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The image below shows the Lake Mead Recreation Area,

zhannawk [14.2K]

Answer:

D. Many, many years of deposition

Explanation:

The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition.

The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through wind, water and ice over the ages.

Hence, the correct answer is D.

5 0

3 years ago

The mass lost by the positive electron should equal the mass gained by the negative electrode suggest two reasons why the result

vesna_86 [32]

Answer:

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3 0

3 years ago

The pressure on 2.50 L of gas is changed from 4.5 atm to 2.2 atm. What is the new volume of gas?

swat32

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{2.5 \times 4.5}{2.2} = \frac{11.25}{2.2} \\ = 5.1136666...$

We have the final answer as

Hope this helps you

8 0

3 years ago

A firework exploding would be an example of a(n) ________. Physical change Endothermic reaction Exothermic reaction Formation of

omeli [17]

I had this question on a test the answer is an exothermic reaction.

6 0

3 years ago

When at atom is charged, it is called an ion. how many electrons are in o2?

fenix001 [56]

32

Electrons are the same number as the protons unless it gives you a charge of +1

So O has 16 then multiply it by 2 and that gives you an answer of 32.

Hope this helps

5 0

3 years ago

Read 2 more answers