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4 years ago

Why do scientist use models to study atoms and molecules?

1 answer:

6 0

This allows us to visually see the structure of the atoms/ molecules so we can get a better understanding of what they look like.

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Which tissue, blood, or muscle is a better source of DNA? why?

Katyanochek1 [597]

Answer:

it helps

Explanation:

A. hair roots

B. red blood cells Although blood is an excellent source of DNA, the DNA does not come from the red blood cells, as these cells have no nuclei. Rather, the DNA comes chiefly from white blood cells in the blood.

C. epithelial cells in urine

D. muscle tissue

E. saliva

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3 years ago

When scientists obtain new information, what happens to an existing scientific theory?

emmasim [6.3K]

Answer:

It is reevaluated

Explanation:

Because of this new evidence, the theory can change, so the scientists must reevaluate the theory

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4 years ago

Question 1

Sedaia [141]

Answer:

potential of hydroxide

Explanation:

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3 years ago

What is the molarity of a solution in which 7.1 g of sodium sulfate is dissolved in enough water to make 100. mL of solution?

Sidana [21]

Answer:

0.50 M

Explanation:

Given data

Mass of sodium sulfate (solute): 7.1 g

Volume of solution: 100 mL

Step 1: Calculate the moles of the solute

The molar mass of sodium sulfate is 142.04 g/mol. The moles corresponding to 7.1 grams of sodium sulfate are:

$7.1g \times \frac{1mol}{142.02g} = 0.050mol$

Step 2: Convert the volume of solution to liters

We will use the relation 1 L = 1000 mL.

$100mL \times \frac{1L}{1000mL} =0.100L$

Step 3: Calculate the molarity of the solution

$M = \frac{moles\ of\ solute }{liters\ of\ solution} = \frac{0.050mol}{0.100L} =0.50 M$

3 0

3 years ago

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Which word identifies the shaking that results from movement under Earth's surface?

djyliett [7]

The anser is plant that what i think

8 0

3 years ago

Read 2 more answers