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3 years ago

Use the periodic table to answer the questions below.

Chemistry

2 answers:

Yanka [14]3 years ago

7 0

Answer:

where is the diagram shown

ExtremeBDS [4]3 years ago

4 0

Answer: 1s2, 2s2, 2p3

Explanation: Nitrogen is an element number 7 on the periodic table which means that it has 7 proton. And for an atom to maintain its electrical neutrality, the number of proton is equal to the number of electron. That is, equal number of positively and negatively charge.

So, 7 electrons of Nitrogen is

1s2, 2s2, 2p4

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Which of the following statements does not describe the structure of an atom?

hammer [34]

Answer:

the last one is wrong

Explanation:

wrong : most of the mass of an atom comes from the electrons cloud

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3 years ago

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frosja888 [35]

Nothing at all happens because pure water cannot conduct electricity

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3 years ago

The following are formed as white precipitates in solution except

aniked [119]

Answer:

A. Iron (III) hydroxide

Explanation:

Orange-brown or rust

6 0

3 years ago

Read 2 more answers

I know that one of them is multiple choice but i’m not sure which one it is.

Evgen [1.6K]

Explanation:

1. neutrons

2. protons

3. protons and neutrons

4. neutrons

5. electrons

I'm not sure with 1 and 4, sorry :<

5 0

3 years ago

What is my theoretical yield (in moles) of Potassium Bromide (KBr) if I start with 40 grams of Iron (II) Bromide [FeBr2]? moles

Verizon [17]

The reaction will be: FeBr2 + K --> KBr + Fe
Balancing gives: FeBr2 + 2K --> 2KBr + Fe
The molar mass of FeBr2 is 55.85 + 2*79.9 = 215.65 g/mol.
We divide 40 g / 215.65 g/mol = 0.185 mol FeBr2
Based on stoichiometry:
(0.185 mol FeBr2)(2 mol KBr/1 mol FeBr2) = 0.370 mol KBr

4 0

4 years ago