The volume of 10 grams of frozen water is more than the volume of 10 grams of liquid water
Answer:
2.74 M
Explanation:
Given data:
Mass of sodium chloride = 80.0 g
Volume of water = 500.0 mL
Molarity of solution = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Now we will convert the mL into L.
500.0 mL× 1 L /1000 mL = 0.5 L
In next step we will calculate the number of moles of sodium chloride.
Number of moles = mass/molar mass
Number of moles = 80.0 g/ 58.4 g/mol
Number of moles = 1.37 mol
Molarity:
M = 1.37 mol/ 0.5 L
M = 2.74 M
Answer:
Option A (9.0) is the correct alternative.
Explanation:
The given values are:
Molarity,
= 1.5 M
Volume,
= 6000 mL
or,
= 6 L
As we know,
⇒ ![Molarity=\frac{Moles}{Volume}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7BMoles%7D%7BVolume%7D)
or,
⇒ ![The \ moles \ of \ NaCl=Molarity\times Volume](https://tex.z-dn.net/?f=The%20%5C%20moles%20%5C%20of%20%5C%20NaCl%3DMolarity%5Ctimes%20Volume)
By putting the values, we get
![=1.5\times 6](https://tex.z-dn.net/?f=%3D1.5%5Ctimes%206)
![=9 \ mol](https://tex.z-dn.net/?f=%3D9%20%5C%20mol)
I think it’s copper bc it’s a type of metal
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