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Kipish [7]
3 years ago
7

Which subatomic particle (or particles) exist in an atom's nucleus?

Chemistry
2 answers:
brilliants [131]3 years ago
7 0
Protons and neutrons.
Sonja [21]3 years ago
6 0

Answer:

protons and neutrons

Explanation:

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What happens to the total number of carbon atoms on Earth? Does the total get larger, does it get smaller, or does it stay the s
viktelen [127]

Answer:

It stays the same.

Explanation:

7 0
3 years ago
Please answer this percent yield question.
Sveta_85 [38]

Answer:

Percent yield = 82.5

Explanation:

Given data:

Actual yield of N₂ = 275 L

Theoretical yield = 333 L

Percent yield = ?

Solution:

Chemical equation:

4HCl + 6NO    →     5N₂ + 6H₂O

Percent yield:

Percent yield = actual yield / theoretical yield × 100

Percent yield = (275 L/ 333 L ) × 100

Percent yield = 0.825× 100

Percent yield = 82.5%

5 0
3 years ago
4) Calculate the percentage by<br> mass of oxygen in Pb(NO3)2<br> A) 193<br> B20<br> 145
Ierofanga [76]

Answer:

  im getting 331.23

Explanation:

Element Number Mass Percet Composition

O            6         16.00  28.9828819853274

N             2         14.01 8.45937867946744

Pb             1        207.21 62.5577393352051

5 0
3 years ago
Someone explain it plz​
timofeeve [1]

Answer:

1). 1 mole of Carbon burnt in air

C + O2 →CO2

1 mole of carbon produces 1 mole of CO2 which is 44g of CO2

2). 1 mole of carbon is burnt in 16g of dioxygen

32g of O2 = 44g of CO2

1g of O2 = 44/32

CO2 (Dioxygen is limiting reagent)

16g of O2 = 4/32 × 16 = 22g of CO2 in one mole

3) 2 moles of Carbon burnt in 16g of dioxygen

16g of dioxygen is available, and thus it can combine with 0.5 mol of carbon to give 22g of CO2

4 0
3 years ago
Read 2 more answers
Give the formula or name for the following binary acids:
ICE Princess25 [194]

Answer:

Formula and name of the binary acids.

Hydrochloric acid - HCl - Hydrogen chloride

Hydrobromic aci - HBr - Hydrogen bromide.

Explanation:

A substance which produces hydronium ions into water called binary acids.

most of the acids contain hydrogen in their chemical formula.

A binary acid composed of a hydrogen cation bonded to the one other element.

For example, HCl,HF and HI

The name and formula of the given binary acids is as follows.

Hydrochloric acid - HCl - Hydrogen chloride

Hydrobromic aci - HBr - Hydrogen bromide.

8 0
3 years ago
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