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xeze [42]
2 years ago
15

What are elements?

Chemistry
2 answers:
Viefleur [7K]2 years ago
7 0
B I hope this helps you
Serhud [2]2 years ago
4 0

Answer:

B. They are the substances that make up all

matter in the universe.

Explanation:

Elements are pure substance that pretty much make everything in the world. For example, water is made up of hydrogen and oxygen. Humans are made of nitrogen, oxygen, hydrogen, and carbon.

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How many grams of Na2SO4 are theoretically produced when excess NaCl reacts with 400 grams of H2SO4
Gnom [1K]

Answer:

335.35 grams

Explanation:

Convert grams of H2SO4 to moles and get 4.08 moles.

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3 0
3 years ago
Ba(oh)2 is a strong electrolyte. determine the concentration of each of the individual ions in a 0.750 m ba(oh)2 solution.
Sindrei [870]

The concentration of each of the individual ions in a 0750 M Ba(OH)2 solution is

[Ba2+] = 0.750 M

[OH-]= 1.50 M

<h3>calculation</h3>

write the equation for dissociation

that is  Ba(OH)2  (s)→ Ba2+(aq)  + 2OH-(aq)

by use of mole ratio of Ba(OH)2 : Ba2+ which is 1: 1 the concentration of Ba2+ is therefore= 0.750M

by use of mole ratio of Ba(OH)2 : OH- which is 1:2 the concentration of  OH- =0.750 M x2/1=1.50 M

7 0
4 years ago
I just need help with 2 chemistry questions! Can you please help me? I will give brainliest answer! 
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