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saw5 [17]
3 years ago
8

What is the unit of measurement used to express density

Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
6 0
Density Grams or kilograms 
Volume is liters milliliters or cm cubed
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Isotopes of an element have the same number of ________ and different numbers of ________. neutrons... protons protons... neutro
Ivahew [28]
Protons . . . neutrons
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3 years ago
How many protons and electrons are there in a neutral atom of lithium<br> Np=Ne
pantera1 [17]

Answer:

3 protons and also 3 electrons

Explanation:

z=p=e

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What force opposes the electromagnetic force in the atom?
rjkz [21]

Answer:

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Explanation:

Hope This helps

7 0
2 years ago
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Calculate the Molarity (M) of an aqueous solution of HCl which is 35.38% HCl by mass and has a density of 1.161 g/mL.
kozerog [31]

Answer:

11.2 M → [HCl]

Explanation:

Solution density = Solution mass / Solution volume

35.38 % by mass, is the same to say 35.38 g of solute in 100 g of solution.

Let's determine the moles of our solute, HCl

35.38 g . 1 mol/36.45 g = 0.970 moles

Let's replace the data in solution density formula

1.161 g/mL = 100 g / Solution volume

Solution volume = 100 g / 1.161 g/mL → 86.1 mL

Let's convert the volume to L → 86.1 mL . 1L / 1000 mL = 0.0861 L

Molarity (M) → mol/L = 0.970 mol / 0.0861 L → 11.2 M

8 0
3 years ago
What are the total valence electrons for KCN? (show all work)
harkovskaia [24]

Answer:

Potassium (K) has 1 valence electron Lewis structure is Nitrogen (N) has 7 valence electrons Lewis structure is Carbon (C) has 6 valence electrons Lewis structure is Then the lewis structure of KCN is Electrons of potassium, nitrogen and carbon are shown by dark circle, dark square and crosses respectively.

Explanation:

4 0
2 years ago
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