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AleksAgata [21]
4 years ago
9

Chemical Changes can be reversed by physical changes true or false​

Chemistry
1 answer:
Tasya [4]4 years ago
8 0

Answer: True, Chemical changes can be reversed by physical changes

Hope this Helps

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The formula mass of HC2H302 is<br> 1.<br> 59<br> 2.<br> 60<br> 3.<br> 72<br> 4.<br> 80
Savatey [412]

Answer:

60

Explanation:

The formula of the compound is given as:

              HC₂H₃O₂

To find the formula mass we sum up the atomic masses of the component elements;

  Atomic mass:

         H  = 1

         C  = 12

         O = 16

 HC₂H₃O₂  = 1 + 2(12) + 3(1) + 2(16)

                   = 1 + 24 + 3 + 32

                   = 60

4 0
3 years ago
Name the three elements from the periodic table that is good for you?
Naddika [18.5K]

Its D.

Carbon provides our natural fuel. Oxygen is important because it is essential in many processes that enable life and in the transformation of energy. Oxygen can also combine with so many different elements to form numerous compounds, and Nitrogen is vital in our world.

<h2><u><em>Hope this helped! ❤</em></u></h2>
5 0
3 years ago
When elements form bonds, it changes their ______ properties.<br>The answer is..? ​
Arturiano [62]

Answer:

chemical and physical

6 0
3 years ago
If a material contains three elements joined in a fixed proportion, what is it called?
jonny [76]
Pretty sure it's a Compound :)
3 0
4 years ago
Which two rocks are primarily composed of a mineral that bubbles with acid?
Marianna [84]
To most geologists, the term "acid test" means placing a drop of dilute (5% to 10%) hydrochloric acid on a rock or mineral and watching for bubbles of carbon<span> dioxide gas to be released. The bubbles signal the presence of carbonate minerals such as</span>calcite<span>, </span>dolomite<span>, or one of the minerals listed in Table 1.</span>
8 0
3 years ago
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