Question

calculate the answer to each problem, then round your figures. please put the calculator answer and your round different color font. 28. 13.90 g + 0.993 g 135.7 g 29. d = \frac{126.78 g}{12.2 ml} 31. 152.34 cm x 38.23 cm = 32. 2. 33. d = \frac{37.25 g}{6.78 ml} 34. 15.

Explanation:

Step1: Solve problem 28

Add the masses: $13.90\ g+0.993\ g + 135.7\ g=150.593\ g$.

Step2: Solve problem 29

Calculate density $D=\frac{126.78\ g}{12.2\ mL}\approx10.3918\ g/mL$.

Step3: Solve problem 31

Multiply the lengths: $152.34\ cm\times38.23\ cm = 5824.9582\ cm^{2}$.

Step4: Solve problem 33

Calculate density $D=\frac{37.25\ g}{6.78\ mL}\approx5.4941\ g/mL$.

Answer:

1. Calculator answer: $150.593\ g$, Rounded answer: $150.6\ g$
2. Calculator answer: $10.3918\ g/mL$, Rounded answer: $10.4\ g/mL$
3. Calculator answer: $5824.9582\ cm^{2}$, Rounded answer: $5825.0\ cm^{2}$
4. Calculator answer: $5.4941\ g/mL$, Rounded answer: $5.49\ g/mL$