Question

convert 71°f to kelvins. round your answer to the correct number of significant figures. k

Explanation:

Step1: Convert °F to °C

$$^\circ\text{C} = \frac{5}{9} \times (^\circ\text{F} - 32)$$
$$^\circ\text{C} = \frac{5}{9} \times (71 - 32) = \frac{5}{9} \times 39 \approx 21.6667$$

Step2: Convert °C to Kelvin

$$\text{K} = ^\circ\text{C} + 273.15$$
$$\text{K} = 21.6667 + 273.15 = 294.8167$$

Step3: Round to sig figs

Original value (71) has 2 sig figs, so round to 290 K (or 2.9×10² K, but 290 is acceptable for 2 sig figs).

Answer:

290 K