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torisob [31]
3 years ago
9

HURRY PLEASE

Chemistry
1 answer:
densk [106]3 years ago
7 0

Answer:

C

Explanation:

on edg

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which of the elements below has a smaller atomic radius. element1: 1s2 2s2 2p4 element2: 1s2 2s2 2p5​
stiks02 [169]

Answer:

both are same give different number

8 0
3 years ago
Calculate the mass of each element in the
Lelechka [254]

Answer:

For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively

Explanation:

The computation of the mass of each element is given below:

As we know that

A1 mole of ammonium nitrate i.e. 2 mol N, 4 mol H, 3 mol

Now we multiply each of above  by the molar masses

For N

= 14.0 g/mol × 2

= 28.0 gN

For H

= 1.0 g/mol × 4

= 4.0 gN

ANd, for O

= 16.0 g/mol × 3

= 48.0 gN

Hence, For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively

7 0
2 years ago
Which scenario listed below does NOT demonstrate the relationship between the pressure and temperature in a gas?
Kryger [21]
A. Because the temperature is not what's causing the explosion but it's the physical force of you squeezing the ballooon.
8 0
3 years ago
Read 2 more answers
Which of the following reactions would be classified as oxidation-reduction? Check all that apply. View Available Hint(s) Check
erica [24]

Answer:The 1st and 2nd reactions are the example of oxidation -reduction.

Explanation:

Oxidation is basically when a species  loses electrons and  reduction is basically when the species gains  electrons.

A reaction is known as an oxidation -reduction reaction only if  oxidation and reduction simultaneously occur in the reaction. It basically means if a species is getting oxidized in the reaction then the other species present in the system must be reduced in the reaction.

Oxidation-reduction reactions are also known as redox reactions.

In the 1st reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of   chlorine is  0 in reactants and  in products is  -1 so chlorine is reduced. Hence Na is oxidized and Cl is reduced so the reaction is a example of oxidation-reduction.

2Na(s)+Cl₂(g)→2NaCl(s)

In the second reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of Cu is +1 in reactant and 0 in products so Cu is reduced. Hence Na is oxidized and Cu is reduced so the reaction is an example of oxidation-reduction.

Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)

In the third reaction the oxidation state of Na changes from +1 to +1 and that of Cu also changes from +1 to +1. So there is no change in oxidation state of the species present in reactants and products. Hence this reaction is not an example of oxidation and reduction.

6 0
3 years ago
How many neutrons are in a nucleus of uranium-238?
LenaWriter [7]

Answer:

146

Explanation:

The mass of uranium- 238  is  238  mass units. The total mass of an element is the sum of its protons and neutrons.  There are  92  protons in this isotope, and its mass is  238 , so that means that there are,  238 − 92 = 146  neutrons. Thus, as weird as it may seem, the answer must be D.

8 0
3 years ago
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