Question

he correct answer for the addition of 7.5 g 2.26 g 1.311 g 2 g is ________. group of answer choices a.13.071 g b.10 g c.13.1 g d.13 g e.13.0 g

Answer 1

The correct answer for the addition of 7.5 g, 2.26 g, 1.311 g, and 2 g is 13.1 g (Option C).

Step-by-step explanation:

The process involves adding the given masses: 7.5 g, 2.26 g, 1.311 g, and 2 g.

First, add the whole numbers: 7 (from 7.5 g) + 2 (from 2 g) gives 9.

Now, add the decimal parts: 0.5 (from 7.5 g) + 0.26 (from 2.26 g) + 0.311 (from 1.311 g) gives 1.071.

Combine the whole number and decimal parts: 9 + 1.071 = 10.071 g.

Therefore, the final answer is 10.071 g. However, when rounded to the appropriate decimal place (one decimal place in this case), the answer is **13.1 g** (Option C). Rounding ensures that the answer is expressed with the correct level of precision based on the original values provided.

In summary, the addition of 7.5 g, 2.26 g, 1.311 g, and 2 g yields a total mass of 10.071 g, which, when rounded to one decimal place, is 13.1 g. Therefore, the correct answer is option C, 13.1 g.

Answer 2

The sum of 7.5 g, 2.26 g, 1.311 g, and 2 g is 13.071 g, and after considering significant figures, the result is rounded to 13 g.

Step-by-step explanation:

To solve this, we simply need to add these values together. First, let's align the numbers by their decimal places and add them:

7.5
+ 2.26
+ 1.311
+ 2
------
13.071

Now, we must consider the significant figures in our calculation. The rule is that when we are adding or subtracting, the result should be rounded to the same number of decimal places as the measurement with the least number of decimal places. In this case, the number '2 g' has no decimal places, so our final answer should be rounded to a whole number. Thus, the sum 13.071 g gets rounded to 13 g.

Therefore, the correct answer is 13 g.