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3 years ago

PLSS ANSWERRRR

Chemistry

1 answer:

const2013 [10]3 years ago

6 0

Answer:

Explanation:

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How can substances in a compound and in a mixture be separated?

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<span>A chemical reaction is required to separate the substances in a compound. The components of a mixture can be separated based on their physical properties using techniques like filtration or distillation.</span>

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Which change in oxidation number represents reduction?

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THE ANSWER IS B. The reducing of oxidation state (-1 to -2, a change of -1, a REDUCTION) is what makes it a reduction.

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3 years ago

Compare (a) the number of drops and (b) the length of time, in minutes, required to deliver 50 mL of intravenous solutions when

Marina CMI [18]

Explanation:

Volume of intravenous solution to be delivered = 50 mL

1) Rate of drops per milliliter of the solution = r = 60 drops/mL

Number of drops delivered :

$60 drops/mL\times 50 mL = 3000 drops$

Time required to deliver 3000 drops = t

Rate of drop solution with respect to time = R = 1 drop/second

$\frac{3000 drop}{t}=1 drop/s$

t = 3000 seconds = 50 minutes (1 min = 60 seconds)

Number of drops delivered 3000.

50 minutes are required to deliver 50 mL of intravenous solutions.

2) Rate of drops per milliliter of the solution = r = 15 drops/mL

Number of drops delivered :

$15 drops/mL\times 50 mL = 750 drops$

Time required to deliver 750 drops = t

Rate of drop solution with respect to time = R = 1 drop/second

$\frac{750 drop}{t}=1 drop/s$

t = 750 seconds = 12.5 minutes (1 min = 60 seconds)

Number of drops delivered 750 .

12.5 minutes are required to deliver 50 mL of intravenous solutions.

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3 years ago

Which factor below would be least likely to cause a mutation in the cells of an organism. Select one: a. Radiation b. Smoking c.

Nutka1998 [239]

Answer:

The correct option is;

c. Sound wave

Explanation:

The given options effect on mutation are given as follows;

a. Radiation

Radiation such as ultraviolet light and gamma radiation, which are electromagnetic waves, cause mutations by causing the formation of free radicals within an organism's cell resulting in the mutation characteristic effects

b. Smoking of tobacco has mutagenic effects due to the presence of several carcinogenic compounds in cigarettes

c. Sound wave is a form of mechanical wave and has no chemical effects on the chemistry of an organism and therefore does not cause mutation in cells

d. Chemical pollution can contain carcinogenic compounds that can cause mutations in the cells of organisms.

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3 years ago

Hamood backwards is hamood

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Answer:

ano po yung sinasabi nyo

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