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adelina 88 [10]
4 years ago
7

(+1)+(-1)=|| (2)+(-2) = 0 20+1) + (-2) = _ (+3) + 3(-1)= 37+2) + 2-3] =

Chemistry
1 answer:
larisa86 [58]4 years ago
6 0
  • 1+(-1)=0
  • 2+(-2)=0
  • 20+1+(-2)=19
  • 3+3(-1)=0
  • 37+2+2-3=38
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I haven't slept in 2 days and am so exhausted. Please if anyone could help... I have class in 2 hours and it's 3am rn
snow_lady [41]

Solution:-

  • a=Carbon(c)
  • b=Nitrogen ion(N+)
  • c=Oxygen ion(O-)

Now

#1

Let's look at the EC of carbon(Z=6)

\\ \tt\longmapsto 1s^22s^22p^2

  • Valency is 4

Now.

3 electrons are shared(1 with H_3C and 2 with N+)

Hence

Electron left unshared=4-3=1

#2

Lets look at EC of Nitrogen(N),Z=7

\\ \tt\longmapsto 1s^22s^22p^3

  • Valency is 3
  • It has already shared 3 electrons

But

Its Cation i.e N+

  • Hence 1 electron it donated .Now it has valency 4

Hence

Electron left unshared=4-3=1

#3

Lets look at EC of Oxygen(Z=8)

\\ \tt\longmapsto 1s^22s^22p^4

  • Valency =2

But it is anion hence 1electron required more which us bonded

Hence

Number of electrons left unshared=0

5 0
3 years ago
Status: No credit Points earned: 0.00/1.00
DIA [1.3K]

Answer:

Cu₂O.

Explanation:

copper = 7.298

copper oxide = 8.217

oxygen in copper oxide = .919 g

7.298 g of copper = 7.298 / 63.5 mole of copper

= .1149 mole of copper

.919 g of oxygen = .919 / 16 mole of oxygen

= .0574 mole of oxygen

ratio of mole of copper and oxygen

= .1149 / .0574 = 2

formula of copper oxide = Cu₂O.

8 0
4 years ago
On a caterpillar's map, all distances are marked in millimeters. The caterpillar's map shows that the distance between two milkw
pychu [463]

Answer:

0.004012km

Explanation:

Problem:

Conversion of millimeters(mm) to Kilometers:

value given = 4012mm

Here, we are converting from a submultiple unit to a multiple unit.

Millimeter depicts 10⁻³m and kilometer stands for 10³m

Now, we must find how many exponents will take us from 10⁻³ to  10³

careful examination shows that if we multiply a power of 10⁶ to 10⁻³ it will give a 10³:

   i.e 10⁻³ x 10⁶ = 10⁻³⁺⁶ = 10³

Therefore,

       10⁶mm = 1km

      4,012mm = \frac{4012}{1000000} = 0.004012km

4 0
3 years ago
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Y_Kistochka [10]

Answer:

1. Carbon Monoxide

2.Water

3. sulfuric acid

4.sulfur dioxide

Explanation:

If my answer helped please rate

8 0
4 years ago
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IceJOKER [234]

Answer: I got -4542.9kg/mol

Explanation:

8 0
3 years ago
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