Paper towel absorbs water is a physical or chemical change?

1 answer:

8 0

It depends. many of the websites i see answering the questions are all over the place, but good luck.

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VikaD [51]

Answer:

Sodium (Na) has atomic number 11.

5 0

2 years ago

Andrei [34K]

Because many animals are likely to die from contamination

6 0

3 years ago

Katena32 [7]

Answer:

two molecules of ammonia are formed by the reaction of one nitrogen and three hydrogen molecules.

Explanation:

The balanced chemical equation provides information on:

Reactants: those are the compounds that appear of the left side of the equation, each with its chemical formula.

Products: those are the compounds that appear on the right side of the equation, again, each with its chemical formula.

Ratio: the coefficients of each compound (the number to the left of the chemical formula) represent the ratio of the number of molecules that react and are formed.

In the given equation you have:

The coefficients are 1 for nitrogen, 3 for hydrogen, and 2 for ammonia. Hence, 2 molecules of ammonia are formed by the reaction of 1 molecule of nitrogen and 3 molecules of hydrogen.

7 0

3 years ago

12345 [234]

Answer:

The resulting solution contains approximately 666 g of water.

Explanation:

In the initial solution we have:

1g salt : 8g sugar : 200g water

This means that the ratios are:

$\frac{salt}{sugar} = \frac{1}{8} \\\\\frac{sugar}{water} = \frac{8}{200} =\frac{1}{25}$