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saul85 [17]
3 years ago
9

GIVE ME ANSWERS

Chemistry
2 answers:
Shalnov [3]3 years ago
6 0

Answer:

uh.. How many do you want done??

Explanation:

tensa zangetsu [6.8K]3 years ago
3 0
I’m gonna give answers that I’m only 100% sure of, and maybe suggest answers too

9. Neutrons
10. Protons and Neutrons
12. Atomic Mass / Mass Number
13. Little Boy over Hiroshima, Japan.
14. Spontaneous fission
15. Alpha decay
17. Marie Curie
19. Nuclear fission
20. Gamma rays
21. Atomic number

I’d probably know more of these if I paid attention more in my lessons/studies IMO, but here’s what I know 100% for those answers!
You might be interested in
Number of representative particles in 3 moles Sn
AURORKA [14]

Answer:

18.066 × 10²³ particles

Explanation:

Given data:

Number of moles of Sn = 3 mol

Number of representative particles = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 3 mole of Sn:

3 × 6.022 × 10²³ particles

18.066 × 10²³ particles

5 0
3 years ago
Can someone please help asap!
posledela
Mitosis is a stage of the cell cycle
7 0
3 years ago
40.0L of N₂ gas are in a sealed container at STP.How many moles of N₂ are present?9 mol
Vinvika [58]

Explanation:

We have to find the number of moles of N₂ that are present in a sample that has a volume of 40.0 L at STP.

STP means Standard Conditions of Temperature and Pressure. These conditions are 273.15 K and 1 atm. We know that 1 mol of N₂ will occupy 22.4 L. We can use that ratio to find the answer to our problem.

1 mol of N₂ = 22.4 L

moles of N₂ = 40.0 L * 1 mol/(22.4 L)

moles of N₂ = 1.79 mol

Answer: 1.79 moles of nitrogen are present.

8 0
1 year ago
What is the molarity of a solution which contains 0.80 mol of HCl in 250mL of<br> solution?
mariarad [96]

Answer:

3.2M HCl Solution

Explanation:

Molarity = moles of solute / volume of solution expressed in liters

moles of solute = 0.80 moles HCl

volume of solution = 250 ml = 0.250 Liter

Molarity (M) = 0.80 moles HCl / 0.250 Liters = 3.2M HCl Solution

6 0
2 years ago
How do you tell if an element is a solid, liquid or gas (ex. Na2S)
svetoff [14.1K]
Solids have a definite shape, and a definite volume.
Liquids have a definite volume, but have no definite shape.
Gas have neither a definite volume nor a definite shape.

Hope this helps!
4 0
3 years ago
Read 2 more answers
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