Question

express the results of the following calculations with the correct number of significant figures: $\frac{5.556\times2.3}{4.223 - 0.08}=?$ question 8 1 pts solve the following problem using the correct significant digits and units. $1.343 g(\frac{1}{2.45 ml})=\text{units}$ question 9 1 pts solve the following problem using the correct significant digits and units. $23.1 k+273.15 k=\text{units}$

Explanation:

Step1: Calculate denominator of first question

$4.223 - 0.08=4.143$

Step2: Calculate numerator of first question

$5.556\times2.3 = 12.7788$

Step3: Calculate result of first question

$\frac{12.7788}{4.143}\approx3.1$ (rounded to 2 significant - figures as 2.3 has 2 significant figures)

Step4: Calculate result of second question

$1.343\ g\times\frac{1}{2.45\ mL}=\frac{1.343}{2.45}\ g/mL\approx0.548\ g/mL$ (rounded to 3 significant - figures as 2.45 has 3 significant figures)

Step5: Calculate result of third question

$23.1\ K + 273.15\ K=296.25\ K\approx296.3\ K$ (rounded to 1 decimal place as 23.1 has 1 decimal place)

Answer:

Question 1: 3.1
Question 2: 0.548, g/mL
Question 3: 296.3, K