What turns colour in an acid and base

Answers

Answer 1

Answer:

Answer:

Chemists use a solution called Universal Indicator to identify acids and bases. ... The Universal Indicator Color Guide shows that Universal Indicator turns red when it is added to a strong acid, it turns purple when it is added to a strong base, and it turns a yellowish-green when it is added to a neutral solution.

Explanation:

Answer 2

Answer:

Answer:

Phenolphthalein

Explanation:

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What is the name of the chemical NaSO3?

Answers

Sodium sulfite is the name

The name of the given chemical compound $\rm NaSO_3$ is called sodium sulfite.

Chemical is a term used to describe any substance that has a definite chemical composition.

The chemical name of $\rm NaSO_3$ is derived from the elements that make up the compound. Na stands for sodium, S stands for sulfur, and O stands for oxygen. The subscript 3 indicates that there are three oxygen atoms in the compound.

Therefore, the chemical $\rm NaSO_3$ is called sodium sulfite. It is an inorganic compound that is used in various chemical processes, as a preservative in the food industry, and in the production of paper.

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What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water?A. an exothermic reaction

B. an endothermic reaction

C. a synthesis reaction

D. an irreversible reaction

Answers

A) Exothermic reaction. Exothermic reactions occur when energy or a new product is being releases(gas, energy, heat)

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Based on the equation below, which of the following statements best describes what should be observed as the reaction takes place?Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(g)

Select one or more:
a. Chlorine forming a solid precipitate
b. Bubbles forming from hydrogen gas production
c. Solid zinc dissolving
d. Bubbles forming from chlorine gas production

Answers

The answer is. C, solid zinc dissolving.

How many significant figures does 546.000 have

Answers

This has only only three sig figs because it is 546.000 the zeros are just place holders so thus meaning they are not significant. It is just another way to write 546 because in that number there is also 3 sig figs. They are just trying to throw you off. Just watch out because if the example is 540 then it is just two significant digits, and it were to be 540. then it be three cause that "." makes the zero significant.

Answer:

Its 7

Explanation:

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Why are lichens a good pioneer species after a volcanic eruption

Answers

They are able to grow on bare rock

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They are able to grow on bare rock.

Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. a bottle contains 425 ml of insulin at a concentration of 20.0 mg/ml . what is the total mass of insulin in the bottle?

Answers

Answer is: mass of insulin in the bottle is 8500 milligrams or 8.5 grams.

V(insulin) = 425 ml; volume of solution.
d(insulin) = 20.0 mg/ml; density of solution.
m(insulin) = V(insulin) · d(insulin).
m(insulin) = 425 ml · 20 mg/ml.
m(insulin) = 8500 mg.
m(insulin) = 8500 mg ÷ 1000 ml/l.
m(insulin) = 8.5 g.

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