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castortr0y [4]
3 years ago
13

When a substance is heated, the particles gain energy and move apart, increasing the volume. The mass of the substance being hea

ted
A. increases

B. decreases

C. stays the same

D. varies unpredictably
Chemistry
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

C stays same

Explanation:

Law of conversation of mass state that mass remain same during hating or chemical reaction

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An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?
Harlamova29_29 [7]

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

Mass of tin = 6.84 g

Percentage of copper = ?

Solution:

Formula:

Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

Total mass = mass of copper + mass of  tin

Total mass = 51.2 g + 6.84 g

Total mass = 58.04 g

Now we will calculate the percentage of copper.

Percentage of copper = 51.2 g / 58.04 g × 100

Percentage of copper = 0.88 × 100

Percentage of copper = 88%

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3 years ago
1 which equation demonstrates the law of conservation of mass?
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3 years ago
Which element is an example of a metalloid?
Olegator [25]

Answer:

boron

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The elements that are generally considered metalloids include boron, silicon, germanium, arsenic, antimony, and tellurium. Other elements such as selenium and polonium are sometimes included as well.

plz mark me as brainliest :)

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