Answer:

Explanation:
Hello!
In this case, since the formula for the calculation of molarity is:

Whereas we can compute the moles of the solute as shown below, making sure the volume is in liters:

Thus, by plugging in we obtain:

Next, since the molar mass of NaCl is 58.44 g/mol, we obtain the following mass:

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That number has 6 significant numbers. It's precision would be 602.
Hope it helped.
Ca=40
N=14
O=16
Ca=40
N=14x2=28
O=6x16=96
molar mass=40+28+96
molar mass=164g/mol
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