The weight of a red blood cell is about 4.5 X 10*11 grams. A blood sample has 1.6 X 10 red blood cells. What is the total weight, in grams, of red blood cells in the sample the answer with the correct scientific notation.

Rationale

2.9 X 10^18 grams is the total weight of red blood cells in the sample.

To find the total weight of the red blood cells, we multiply the weight of one red blood cell (4.5 X 10^-11 grams) by the total number of red blood cells in the sample (1.6 X 10^10). This results in a total weight of 2.9 X 10^18 grams.

A (2.9 X 10^18) YOUR ANSWER

This choice represents the correct total weight of the red blood cells calculated from the given data. Multiplying the individual weight of a red blood cell by the number of cells yields this value, confirming it as correct.

B (7.2 X 10^(-4)) CORRECT

This option is incorrect as it represents a significantly underestimated total weight. The calculations for weight yield a much larger number, showing that the multiplication of the given values does not correspond to this choice.

C (7.2 X 10^(-77)) YOUR ANSWER

This choice is not valid as it suggests an extremely small weight, which is not aligned with the context of the problem. The calculated total weight should be a large positive number, not a negative exponent in scientific notation.

D (6.1 X 10^(-4)) YOUR ANSWER

This choice also reflects a minuscule value that does not represent the total weight of the red blood cells. The multiplication of the given quantities results in a much larger total weight, making this choice incorrect.

Conclusion

The total weight of the red blood cells in the sample is accurately calculated as 2.9 X 10^18 grams. Each incorrect option fails to reflect the actual multiplication of the given weight per cell and the total number of cells, highlighting the importance of proper calculations in scientific notation.

The weight of a red blood cell is about 4.5 X 10*11 grams. A blood sample has 1.6 X 10 red blood cells. What is the total weight, in grams, of red blood cells in the sample the answer with the correct scientific notation.

2.9 X 10^18 grams is the total weight of red blood cells in the sample.

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