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3 years ago

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Which substance can not be broken down by a chemical change

1 answer:

Marina CMI [18]3 years ago

8 0

A substance that cannot be broken down into even by chemical means is called an element. About 90 elements on the Periodic Table can be found naturally on Earth. Three of the most common ones are aluminium, silicon and oxygen.
Sorry I couldn't give you a more specific answer as your question wasn't multiple choice.

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lord [1]

c2 is a Air that you break

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2 years ago

One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silv

Flauer [41]

Answer:

1.1 × 10⁻⁴ M

Explanation:

Let's consider the following double displacement reaction.

CuCl₂(aq) + 2 AgNO₃(aq) → 2 AgCl(s)+ Cu(NO₃)₂(aq)

We can establish the following relations:

The molar mass of AgCl is 143.32 g/mol.
The molar ratio of AgCl to CuCl₂ is 2:1

The moles of CuCl₂ that reacted to produce 7.7 mg of AgCl are:

$7.7 \times 10^{-3} gAgCl.\frac{1molAgCl}{143.32gAgCl} .\frac{1molCuCl_{2}}{2molAgCl} =2.7 \times 10^{-5}molCuCl_{2}$

The molarity of CuCl₂ is:

$M=\frac{2.7 \times 10^{-5}molCuCl_{2}}{0.250L} =1.1\times 10^{-4} M$

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3 years ago

PLS HELP!!! WILL GIVE BRAINLIEST!!! Really easy, I am just horrible at this stuff.

otez555 [7]

Answer:

B: Igneous, C: Metamorphic, D: Sedimentary

Explanation:

Sorry, i dont know A

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3 years ago

Read 2 more answers

Oxygen, with an atomic number of 8, is a neutral atom and would have ___________ electrons in the first electron shell and _____

motikmotik

2 in the first shell and 6 in the second

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3 years ago

Compute 6.28×1013+7.30×1011.

Simora [160]

6.28×1013+7.30×1011 this =13741.94

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3 years ago