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Roman55 [17]
3 years ago
15

The estimate obtained from a sample of which size is likely to be closest to

Chemistry
2 answers:
zubka84 [21]3 years ago
8 0

The answer is C, 85.

Leokris [45]3 years ago
5 0

the closest value is C, 85.

hope it helps!!!!

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How many significant digits are there in the measurement 50,600 mg A)4 B)5 C)6 D)7
Arte-miy333 [17]

Five. The measurement 50,600 mg has five significant digits.

I presume that you are using the comma as a decimal separator.

The <em>rules for significant figures</em> are
1. Nonzero digits are always significant.
2. Any zeros between two significant digits are significant.
3. Final or trailing zeros are significant only if they are to the right of a decimal point.

• According to Rule 1, the <em>5 and 6</em> are significant.
• According to Rule 2, the <em>0 between the 5 and 6</em> is significant
• According to Rule 3, the <em>final two zeros</em> are significant.

Thus, there are five significant digits in the measurement 50,600 mg.

Note: If the comma is a thousands separator, the number has only three significant digits.

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What is the molarity of 0.50g of Na dissolved in a 1.5 L solution?
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M = mols of solute / L of solution

Convert .50 g Na to mols Na by dividing by 22.99 and then dividing that by 1.5, which gives you a 0.014 M solution.
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