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Elena L [17]
3 years ago
11

In order to calculate the number of neutrons you must subtract the what from the what?​

Chemistry
2 answers:
Katyanochek1 [597]3 years ago
6 0

Answer:

You take the atomic, or proton number of the element, and you subtract it from the element's mass number.

fredd [130]3 years ago
3 0

Answer:

protons

Explanation:

neutrons and protons make up the mass of the atom

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How many moles of AlCl3 are in 2.25L of a 0.15 molar solution?
Darya [45]

Answer:

Option C. 0.34 moles

Explanation:

Data obtained from the question include:

Molarity = 0.15M

Volume = 2.25L

Mole =

Molarity = mole /Volume

Mole = Molarity x Volume

Mole = 0.15 x 2.25

Mole = 0.34mole

The number of mole of AlCl3 present in the solution is 0.34mole.

5 0
3 years ago
100POINTS!!!!<br><br> Label each reaction to either homogeneous OR heterogeneous
liraira [26]
First is homogeneous and so is the third. second is heterogeneous
8 0
2 years ago
It takes 26.8 mL of a 0.0700 M NaOH standard solution to neutralize a 250 mL sample of lactic acid (C3H6O3). What mass of lactic
Butoxors [25]
There is 1 OH- in 1 molecule of NaOH. 
Also, there is 1 H+ in 1 molecule of lactic acid.

So the reaction is simple.
so just equate the moles
moles of OH- in NaOH = moles of H+ in lactic acid
26.8 x 0.07 = 250 x Mole of lactic
Moles of lactic = 0.0075

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4 0
2 years ago
Which of the following does not represent an aspect of an environmentally<br> sustainable society?
bekas [8.4K]

Answer:A = $90

B = $390

Explanation:

6 0
3 years ago
Read 2 more answers
PLEASE PEOPLE I NEED HELP PLEASE IF YOU SEE THIS HELP ME ! :,( !!!!! PLEASEEEEEEEEE
Tems11 [23]

Answer:

year 1 is 5.5%

year 2 is 7.5%

year 3 is 10.2%

Explanation:

since,

length of the transect covered in seaweed / total lenth of transect x 100

then,

0.55 / 10.0 x 100 = 5.5

and

0.75 / 10.0 x 100 = 7.5

and

1.02 / 10.0 x 100 = 10.2

you could also just move the decimal to the right once

:)

4 0
2 years ago
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