3 years ago

What are three observable changes that show a chemical reaction?

Chemistry

1 answer:

adoni [48]3 years ago

5 0

Answer:

Fizzing, New color, and odor

Explanation:This is because chemicals change the smell which can be called odor, chemicals change the color, and when something is fizzing their is a chemical reaction going on.

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How many grams in total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution of it?

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The mass of is K2CrO7 in the 250 ml of solution is mathematically given as

x=1.25mg of K2CrO7.

Hence, 250 ml of the solution will contain 1.25mg of K2CrO7

Question Parameters:

The total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution

Generally the mass of k2CrO7 is mathematically given as

$x=\frac{5mg of k2CrO7 *250ml of solution}{1000ml of solution}$

x=1.25mg of K2CrO7

Therefore,

250 ml of the solution will contain 1.25mg of K2CrO7

For more information on chemical Reaction

brainly.com/question/11231920

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