Question

At the end of an experiment, Group A had a residual of 32.075 grams of iron and Group B had a residual of 19.5 grams of iron. Using significant digits, find out how many more grams of iron Group A had than Group B.
A. 12.6
B. 12.50
C. 12.57
D. 12.575

Answer 1

The right answer is Option D.

Step-by-step explanation:

Residual of Group A= 32.075 grams

Residual of Group B= 19.5 grams

Difference= Residual of Group A-Residual of Group B

$Difference= 32.075-19.5\\Difference=12.575$

Therefore, Group A has 12.575 grams more residual of iron than Group B.

The right answer is Option D.

Keywords: Subtraction

Learn more about subtraction at:

• brainly.com/question/9184197
• brainly.com/question/916181

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Answer 2

Answer:

A. 12.6

Step-by-step explanation: