What numeral is the most significant digit in the measurement t = 24.705 s?

1 answer:

5 0

I would say that the numeral "2" would be the most significant digit as it signifies "20" and 20 is the largest number in this equation which could mean time=24.705 seconds perhaps. So using 20 as the multiplier gets close to the correct answer obtained from the actual 24.705.

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Answer:

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A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. What is the weight/

lara31 [8.8K]

Answer:

A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. The weight/weight % or percent by mass of the solute is :

2.67%

Explanation:

Note : Look at the density of potassium nitrate in water if given in the question.

You are calculating weight /Volume not weight/weight % or percent by mass of the solute

Here the weight/weight % or percent by mass of the solute is asked : So first convert the VOLUME OF SOLUTION into MASS

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$density=\frac{mass}{volume}$