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Mumz [18]
3 years ago
13

18. The mass of a metal ring is 116 g. You fill a graduated cylinder with 15 mL of

Chemistry
1 answer:
AnnyKZ [126]3 years ago
5 0

18 B 19 C and 20 A

cuz that's it I hope it helps you

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Compare and contrast a pure substance with a mixture and give an example.
Inessa [10]

Of any substance? What about two powders such as 1/2 cup of white flour, then mixing 1/2 cup of salt together with the flour. This would then form a more coarse mixture being that the two particles differ in shape.

3 0
3 years ago
16. What is a pure substance formed when two or more different elementscombine called?A. compoundB. moleculeC. element
Lana71 [14]
<h2>Answer:</h2>

Compound. Option A is correct

<h2>Explanations:</h2>

When two or more different elements combines, a compound is formed. For instance, if carbon and oxygen combines, carbondioxide is formed according to the equation;

C+O_2\rightarrow CO_2

From the reaction, carbon and oxygen are the elements while carbondioxide is the compound. Hence we can conclude that a pure substance formed when two or more different elements combine called compound.

3 0
1 year ago
Explain in terms of types of matter why methane can be broken down by chemical means but argon cannot?
Fynjy0 [20]
Argon is a pure element which means that it cannot be broken down further than it already is. Methane, however, is a hydrocarbon, which means it is made out of both hydrogen and carbon and thus can be broken down to separate those elements.
7 0
2 years ago
Complete the chart. (Remember to enter a 0 if necessary.)
Trava [24]
<span>Atomic Number 10 is Neon.

1s: 2
2s: 2
2p: 6 
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3p: 0 
4s: 0
3d: 0
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6 0
2 years ago
About how many harvests of bamboo can be collected during the time it takes to fully grow one pine tree?
Tomtit [17]

Answer:

bamboo can grow 910 mm (36 in) within a 24-hour period,at a rate of almost 40 mm (1 1⁄2 in) an hour (a growth around 1 mm every 90 seconds, or 1 inch {2.54 centimeters} every 40 minutes).

Explanation:

6 0
2 years ago
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