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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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Elis [28]

Answer:

The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.

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3 years ago
In table below, there are descriptions of an experiment on samples of three different chemical compounds. Decide whether the com
likoan [24]

Answer:

Compound 1 is molecular

Compound 2 is ionic

Compound 3 can't really be decided

Explanation:

A molecular substance does not conduct electricity, has very low melting and boiling points and is held together by very weak intermolecular forces.

An ionic substance conducts electricity in solution or in molten state but never in the pure solid state, has a high melting and boiling point and has a dull appearance most times.

Compounds 1 shows the properties of molecular substances hence it are designated as such.

On the other hand, compound 2 shows the properties of an ionic substance and is also designated as such.

We can't really decide on compound 3 because it shows some properties of ionic substances and some properties of molecular substances.

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3 years ago
What's the name for Pb(NO3)2?
Vlad1618 [11]

Answer:

lead ii nitrate is the answer

5 0
3 years ago
Which reaction is more likely to involve a form of combustion (exothermic)? Explain your reasoning.
Andrews [41]

Answer:

The general equation for an exothermic reaction is: Reactants → Products + Energy.

3 0
3 years ago
Read 2 more answers
SCIENCE QUEASTION I PUTED IT IN CHEMISTRY BECAUSE BRAINLY HAS NO SCIENCE WILL MARK BRAINLIEST
Elena L [17]

#1. The condition of the atmosphere at a certain time and certain place

#2. The rate of evaporation is EQUAL to the rate of condensation

Please mark Brainliest if this was helpful! :)

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