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inessss [21]
3 years ago
9

A neutral atom has 12 protons and 13 neutrons in its nucleus. What is its mass number?

Chemistry
1 answer:
Thepotemich [5.8K]3 years ago
3 0

Answer: 68

Explanation: u times them

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Karo-lina-s [1.5K]

Answer:

Anaphase II

Explanation:

4 0
3 years ago
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A solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water. The molar mass of Cu is 63.55 g/mol the molar mass of S
slamgirl [31]

The molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

<h3>How to calculate molarity?</h3>

The molarity of a solution can be calculated using the following formula:

Molarity = no of moles/volume

According to this question, a solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water.

no.of moles of CuSO4 = 35g ÷ 159.6g/mol

no. of moles of CuSO4 = 0.22 moles

Therefore; molarity of CuSO4 solution is calculated as follows:

M = 0.22 ÷ 0.25

M = 0.88M

Therefore, the molarity of a solution that contains 35.00 g of CuSO4 dissolved in 250.0 mL of water is 0.88M.

Learn more about molarity at: brainly.com/question/12127540

6 0
2 years ago
Please I don’t get this at all someone help
ohaa [14]
I think it’s 7.41 because you count up all the atoms and find out how many are x (the large grey ones) and you do 2/27 x 100 which gives you 7.41 :) (sorry if i counted wrong it’s kinda hard)
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3 years ago
True or false atoms are made up of tiny particles called molecules true or false
Nana76 [90]
False, Molecules are made of atoms and atoms are made of quarks.
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Is LiOH soluble or insoluble?
riadik2000 [5.3K]
LiOH is soluble. Na2CO3 is soluble. Cu(OH)2 is insoluble. 
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