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2 years ago

12

Samual adds a teaspoon of salt to a glass of water he notice that the salt disappears Samuel takes a sip to discover that the wa

ter taste salty what kind of changes occurred

1 answer:

lina2011 [118]2 years ago

6 0

It is chemical change

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The answer is B. atoms

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2 years ago

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Given the equation: 2H2 + O2 → 2H2O, how many moles of oxygen are needed to react with 13 moles of hydrogen

bulgar [2K]

Explanation:

2H2 + O2 = 2H2O

2mol. 1mol. 2mol

2mol reacts with 1mol

13mol reacts with x

x=<u>13mol</u><u> </u><u>×</u><u> </u><u>1mol</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>2mol</u>

x= <u>13mol</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>2mol

x= 6.5mol of oxygen

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2 years ago

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Answer:

The answer is steam of fossil fuels

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2 years ago

Which of the following is a FALSE statement?

Allisa [31]

Answer:

warm water is denser than cold water

Explanation:

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3 years ago

38.2mm converted into cm

Alex

1 mm ---------- 0.1 cm
38.2 mm ------ ?

38.2 x 0.1 / 1

= 3.82 cm

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3 years ago