Question

1. a metal alloy melts at 25°c. what is this temperature in °f? (3pts) °f = (1.8 × °c) + 32 ☐ 120 °f ☐ 310 °f ☐ 89 °f ☐ 77 °f 13) the mass of a substance is 17.46 g and its volume is 3.42 ml. what is the density of the substance rounded to the correct number of significant figures? (3pts)

Explanation:

Step1: Substitute °C into formula

$\degree\text{F} = (1.8 \times 25) + 32$

Step2: Calculate the product first

$1.8 \times 25 = 45$

Step3: Add 32 to the result

$45 + 32 = 77$
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Step1: Calculate raw density value

$\text{Density} = \frac{17.46}{3.42} = 5.10526...$

Step2: Round to sig figs

Volume has 3 sig figs, so round to 3 digits.

Answer:

1. $\boldsymbol{77\ \degree\text{F}}$
2. $\boldsymbol{5.11\ \text{g/mL}}$