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juin [17]
2 years ago
5

What is the mass of a neutron???? PLEASE HELP

Chemistry
1 answer:
bulgar [2K]2 years ago
6 0

Answer:

1.674929 x 10-27 kg

Explanation:

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Why does Europe, the USA, and Canada have acid rain?
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Because of pollution from factories and other activities that release harmful gases into the air
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3 years ago
Which of the following elements would you expect to be most reactive, based
ki77a [65]

Answer:

C. Lithium

Explanation:

This image describes the trend in reactivity. Group 1 metals are always the most reactive so yeah :)

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HELP ASAP ILL GIVE BRAINLIEST!!
Dahasolnce [82]

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2 years ago
Using the periodic tables, identify the heaviest member of each of the following groups:
Lady_Fox [76]

Answer:

(a) Alkali metals: Francium (Fr)

(b) Chalcogens: Polonium (Po)

(c) Noble gases: Radon (Rn)

(d) Alkaline earth metals: Radium (Ra)

Explanation:

In the periodic table, the atomic mass increases down the group. Therefore, the last element of a group is the heaviest element of the group.

(a) alkali metals: The chemical elements that are present in group 1 of the periodic table, except hydrogen.

<u>The heaviest member of this group is francium (Fr)</u>

(b) chalcogens: The chemical elements that are present in group 16 of the periodic table

<u>The heaviest member of this group is polonium (Po)</u>

(c) noble gases:  The chemical elements that are present in group 18 of the periodic table

<u>The heaviest member of this group is radon (Rn)</u>

(d) alkaline earth metals: The chemical elements that are present in group 2 of the periodic table.

<u>The heaviest member of this group is radium (Ra)</u>

7 0
3 years ago
A redox reaction employed in an electrochemical cell has a negative . Which statement is true? a) E∘cell is positive b) K&gt;1 E
krok68 [10]

Answer:

d. K<1 E∘cell is negative

Explanation:

Since E⁰ = negative , ΔG = -nFE⁰ = -nF -ve = +ve.

Also, ΔG = -RTlnK

K = exp(-RTΔG)

Since ΔG = +ve, -RTΔG = -ve

K = 1/exp(RTΔG) < 1.

So our answer is  E⁰ cell is negative and K < 1

5 0
3 years ago
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