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3 years ago

Democritus contributed to our understanding of the atom in which of the following ways?

2 answers:

7 0

I believe the answer is 3 - He hypothesized that all substances can be broken down into a smallest part called the atom.

Novosadov [1.4K]3 years ago

5 0

Answer:

He hypothesized that all substances can be broken down into a smallest part called the atom.

Explanation:

done the topic

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madam [21]

Answer:

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3 years ago

ANSWER FAST PLZ 25 POINTS!!!!!!!!!!!!!!!

Scilla [17]

Answer:

i think the answer is C)

Explanation:

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3 years ago

What is the molarity of 60.0 grams of NaOH dissolved in 750 milliliters of water?

Bumek [7]

Answer:

The correct answer option is B) 2.0 M.

Explanation:

We are given the number of grams of NaOH (Sodium Chloride) which are dissolved in 750 milliliters of water and we are to find its molarity.

We know the formula of molarity:

Molarity = (mass * 1000) / (volume * molecular mass)

Volume = 750 ml = 750 cm $^3$

Molecular mass = 40

Mass = 60 grams

Substituting these values in the above formula:

Molarity = $\frac{(60*1000)}{750*40}$ = 2.0 M

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3 years ago

Heat is which of the following???

Sergeu [11.5K]

A measure of thermal energy transferred between two different bodies at different temperatures would be the correct answer. So, the third option.

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3 years ago

A sample with a molar mass of 34.00 g/mol is found to consist of 5.9783% Hydrogen and 94.0217% oxygen. Find it’s molecular formu

kozerog [31]

Answer:

The formula is H202 (hydrogen peroxide, known as hydrogen peroxide)

Explanation:

100%----34g

5, 9783%---X= (5, 9783%x 34g)/100% =2 g

1g---1 atom of H

2g----x= 2g x 1 atom of H/1g = 2 atom of H

100%----34g

94, 0217%---X= (94,0217%x 34g)/100% =32 g

16g---1 atom of 0

32g----x= 32g x 1 atom of 0/16g = 2 atom of 0

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3 years ago