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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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0.820 L has a mass of 2.56kg what is the density of this liquid in kg/L
3241004551 [841]

Density ρ=\frac{m}{v}

=\frac{2.56 kg}{0.820 L} \\=3.121kg/L

8 0
3 years ago
What is the volume, in cubic meters, of an object that is 0.21 m long, 4.7 m wide, and 5.3 m high?
oee [108]

Answer:

The formula for volume of a rectangle is length multiply by width multiply thus, 0.25 m multiply 6.1 m multiply by 4.9 m = 7.5m^3.

Explanation:

the least number of significant figures is 2 thus the final answer will have the same number of significant figures. 7.5m^3

5 0
3 years ago
Fractional distillation of a mass mixture of 10 g water and 10 g perchloric acid would yield a distillate with what composition
jek_recluse [69]

Azeotrope is a mixture of two or more liquids whose proportions cannot be changed by simple distillation.

Explanation:

Nitic acid and water is an example of azeotrope. The composition of 68% of nitric acid and 32% of water by mass in a boiling point of 393.5k.

The composition of perchloric acid (71.6%) and water boils at 203°c. Pure iron solution weights about 10g is placed in a beaker, hydrochloric acid and nitric acid mixtures are added and heated to dissolve. Add perchloric acid until it evaporate and produces white smoke.cool it down add water and dissolve the salt.

8 0
3 years ago
What is the ground state shorthand notation for iron (Fe)?
mario62 [17]

Answer:For Fe

Z=26

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2 3d6

Are there 26 electrons here? Why should there be 26?

So going back to the inert gas, argon ( Z=18 ), we get

[Ar] 4s2 3d6


Make sure to check your work by counting the electrons you have

8 0
3 years ago
20 points to whoever can answer these 3 questions correctly
vazorg [7]

Answer:

1.true

2.2

3. false

Explanation:

.........

5 0
2 years ago
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