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Andrews [41]
3 years ago
7

Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that _____.

Chemistry
2 answers:
34kurt3 years ago
8 0
Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that <span>atoms are divisible. The answer is letter C</span>
Digiron [165]3 years ago
6 0

1. C. atoms are divisible

2. C. Electrons are distributed around the nucleus and occupy almost all of the volume of the atom

3. B. Protons

4. B. Number of protons

5. D. Mass numbers

6. C. Subtract the number of protons from the mass number

7. A. amu

8. B. The actual masses of atoms are very small and difficult to work with.  

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Among the gases listed, which would have the fastest rate of effusion?
Delvig [45]
"CH4" is the one gas among the choices given in the question that <span>would have the fastest rate of effusion. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has actually come to your great help.</span>
3 0
3 years ago
Read 2 more answers
The molar mass of H2O is 18.01 g/mol. The molar mass of O2 is 32.00 g/mol. What mass of H2O, ins grams, must react to produce 50
Ivan

Answer:

56.28 g

Explanation:

First change the grams of oxygen to moles.

(50.00 g)/(32.00 g/mol) = 1.5625 mol O₂

You have to use stoichiometry for the next part.  Looking at the equation, you can see that for every 2 moles of H₂O, 1 mole of O₂ is produced.  Convert from moles of O₂ to moles of H₂O using this relation.

(1.5625 mol O₂) × (2 mol H₂O/1 mol O₂) = 3.125 mol H₂O

Now convert moles of H₂O to grams.

(3.125 mol) × (18.01 g/mol) = 56.28125 g

Convert to significant figures.

56.28125 ≈ 56.28

5 0
3 years ago
Materials: • One disposable plastic cup • One disposable plastic spoon (plastic fork or knife may be used instead) • Thermometer
Leya [2.2K]
I'm not sure what the question is, this is a lab proecdure
4 0
3 years ago
Help me please!!!!!!!!!!!!!
Mariana [72]

Answer:

D.

Explanation:

Hope this helps

4 0
3 years ago
Which of the following is converted into chemical energy during photosynthesis?
castortr0y [4]
Photosynthesis is commonly understood as converting light energy to chemical energy. So, C would be the correct answer.
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