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Arisa [49]
3 years ago
7

HELP!! - Very appreciated! :)

Chemistry
1 answer:
IgorLugansk [536]3 years ago
6 0
Your answer is 2 goes to the right and twice to the left
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A pinch of salt has
Inessa [10]

13.29 X 10^{21} moles of NaCl are in a pinch of salt and a pinch of salt has

approximately 3.29x10^{21} formula units of NaCl.

<h3>What are moles?</h3>

The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is “mol”.

We know that 1 formula unit of sodium chloride has a molar mass of 58.44g/mol

Hence;

Mass of 1 formula unit = 58.44g

Mass of 3.29 x 10^{21} formula units

13.29 x 10^{21} x 58.44g

776.6676 x 10^{21}

Moles =\frac{776.6676 X 10^{21} }{ 58.44g}

Moles = 13.29 X 10^{21}

Therefore;

13.29 X 10^{21} moles of NaCl are in a pinch of salt.

Learn more about moles here:

brainly.com/question/15209553

#SPJ1

3 0
2 years ago
PLEASE HELP!)NO LINKS PLEASE Rhonda created a table to classify materials that conduct electricity and materials that do not con
Bingel [31]

Answer:

basically all but the....... second or fourth please dont report if wrong but i know most objects on the list can not be eletrically conducted im sorry oh and hi abbey!!!

7 0
3 years ago
How many meters are equivalent to 12 US gallons?
Nesterboy [21]
0.0454249 Liquid meters. 
7 0
4 years ago
The enthalpy of formation of water is –285.8 kJ/mol. What can be inferred from this statement?
Aleks04 [339]

The minus sign in ' –285.8 kJ/mol'  indicates that the formation of water is an exothermic process. In an exothermic process heat is released by the system.

On the contrary, a positive value of the heat of formation indicates that the process is endothermic. In an endothermic process heat is absorbed by the system.




8 0
3 years ago
Read 2 more answers
To what volume must 175 L of air at 1.0 atm be compressed to yield a pressure of 5.2 atm? (You can assume constant temperature.
Elena L [17]
Using the ideal gas law, for a constant temperature, pV = constant (also known as Boyle's Law)
(1 atm)(175 L) = (5.2 atm)(V) = constant
V = 33.7 L
6 0
3 years ago
Read 2 more answers
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