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vredina [299]
2 years ago
12

Quicklime is an incredibly caustic substance that has been used during plagues to quickly dissolve diseased corpses. Calcium car

bonate can be heated to produce quicklime (CaO) and carbon dioxide gas. What mass of quicklime could be produced from a 4,500g bag of calcium carbonate?
Chemistry
1 answer:
Mazyrski [523]2 years ago
6 0

Answer:I just want points

Explanation:because I need them for future questions

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How do the particles in matter change when a substance becomes hotter, cools down, or changes state
Archy [21]
Colder- moves slower
warmer- moves faster
changes state:
    solid to gas- warmer
    gas to solid- colder
    something like that
7 0
3 years ago
PLEASE HELP ME SOLVE THIS.Thank you so much!
Tju [1.3M]

Answer: The coefficients for the given reaction species are 1, 6, 2, 3.

Explanation:

The given reaction equation is as follows.

Cr_{2}O^{2-}_{7} + Cl^{-} \rightarrow Cr^{3+} + Cl_{2}

Now, the two half-reactions can be written as follows.

Reduction half-reaction: Cr_{2}O^{2-}_{7} + 3e^{-} \rightarrow Cr^{3+}

This will be balanced as follows.

Cr_{2}O^{2-}_{7} + 14H^{+} + 6e^{-} \rightarrow 2Cr^{3+} + 7H_{2}O ... (1)

Oxidation half-reaction: Cl^{-} \rightarrow Cl_{2} + 1e^{-}

This will be balanced as follows.

6Cl^{-} \rightarrow 3Cl_{2} + 6e^{-} ... (2)

Adding both equation (1) and (2) we will get the resulting equation as follows.

Cr_{2}O^{2-}_{7} + 14H^{+} + 6Cl^{-} \rightarrow 2Cr^{3+} + 3Cl_{2} + 7H_{2}O

Thus, we can conclude that coefficients for the given reaction species are 1, 6, 2, 3.

6 0
2 years ago
True or false 12,785.000 has five significant digits.
Yuki888 [10]

Answer:

True

Explanation:

Significant digits include non-zero digits (unless the zero is between two non-zero numbers)

In 12,785.000, there are 5 non-zero digits:

1 2 7 8 5

4 0
3 years ago
Read 2 more answers
Mention any two uses of oxygen gas.​
Elodia [21]

Answer:

steel, plastics

<h3>Explanation:</h3>

Hope it helps!

3 0
3 years ago
Equator runs east and west all the way around the world,halfway between the south poles called the ______________and north poles
Korvikt [17]

Answer:

hanigin ng mga pule natin

3 0
3 years ago
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