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uranmaximum [27]
3 years ago
12

The tip of a match is ignited as it is struck against the matchbox. Why is this a chemical change?

Chemistry
2 answers:
Rufina [12.5K]3 years ago
8 0
The tip of the match is flammable its FLVS I did this and realy ITS MELTING ITS COLERFUL LOL omg is up with the awsners
LUCKY_DIMON [66]3 years ago
5 0
The answer is A, because of the chemical reaction taking place color can change (as in this case). Hope it helps!
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3 years ago
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How many moles are in 9.50 x 1022 molecules of CO? Be sure to ALL work below and report your answer using the correct number of
eimsori [14]

Answer:

0.158 moles

Explanation:

We are given;

9.50 x 10^22 molecules of CO

We are required to determine the number of moles;

We need to know;

1 mole of a compound = 6.022 × 10^23 molecules

Therefore;

9.50 x 10^22 molecules of CO will be equivalent to;

= 9.50 x 10^22 molecules ÷ 6.022 × 10^23 molecules/mole

= 0.158 moles

Therefore, the number of moles are 0.158 moles

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3 years ago
The allotropic form of a non – metal is a good conductor of electricity. Name the nonmetal.
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2 years ago
The surface rocks on Venus are similar to ______ rocks on Earth.
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6 0
2 years ago
A certain electrolyte solution contains 1 gram of salt for every 8 grams of sugar and every 200 grams of water. If the sugar to
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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}

In the final solution we have:

5g salt: xg sugar: yg water

The new ratios are:

\frac{salt}{sugar} = \frac{3}{8} \\\\\frac{sugar}{water} = \frac{1}{50}

Now we can calculate the amount of sugar in the final solution:

\frac{salt}{sugar}  = \frac{5}{x} =\frac{3}{8} \\\\X = 13.333 g

Finally, we calculate the amount of water:

\frac{sugar}{water} = \frac{13.333}{y} = \frac{1}{50} \\y = 666.667 g

4 0
3 years ago
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