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Alinara [238K]
3 years ago
7

In caves, dripping groundwater containing calcium bicarbonate can form stalactites and stalagmites. When the water is exposed to

air, some of the calcium bicarbonate turns into calcium carbonate, which gets deposited on the ground. What makes this process a chemical change?
Chemistry
1 answer:
Ksivusya [100]3 years ago
5 0
The answer is A, a new chemical substance has to be formed for there to be a chemical change. This is because chemical change happens when a phase of matter changes due to chemicals.
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How many grams of NaOH are produced with the reaction of 5.00 moles of water?
just olya [345]

Answer:

Explanation:

        6.90 mol                         x grams

2As +         6NaOH           =              2Na3AsO3     + 3H2

                 6 mol                              2 mol

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2.3 mol Na3AsO3  x  192 g/mol = 442 g Na3AsO3

4 0
3 years ago
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8 0
3 years ago
Which is an example of an exothermic process?
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I think it's E. heating of water

Because exothermic process discharges heat, causing the temperature of the prompt environment to rise

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6 0
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