Question

1 numerade 1 punto how many significant figures are in 123 ml? respuesta 3 2 formula 3 puntos convert 199 pounds to grams. use 1 pound = 450 g. express your answer with 0 decimal places. respuesta

Explanation:

Problem 1: Significant Figures in 123 mL

Step1: Recall significant figure rules

For a number without a decimal, non - zero digits are significant. In 123, all three digits (1, 2, 3) are non - zero.

Step1: Identify the conversion factor

We know that 1 pound = 450 g (given).

Step2: Set up the conversion

To convert pounds to grams, we multiply the number of pounds by the conversion factor. So, for 199 pounds, the mass in grams $m = 199\times450$.

Step3: Calculate the product

$199\times450=(200 - 1)\times450=200\times450-1\times450 = 90000 - 450=89550$.

Answer:

3

Problem 2: Convert 199 pounds to grams