Ask Question
22 September, 13:21

How much heat is required to heat 5.25 g of water h2o from 5.5?

+2
Answers (1)
  1. 22 September, 16:58
    0
    Heat = mass * heat capacity of water * change in temperature mass = 5.25 g heat capacity of water = 4.186 joule/gram °C Change in temperature = 62.8°C - 5.3°C = 57.5 °C Plug in the values heat = 5.25 g * 4.186 joule/gram °C * 57.5 °C = 1263.6 J Rounded to two three significant figures, it is 1260 J of energy needed. In terms of calories, the heat capacity of water is 1 calorie/gram °C. So do the plugging in all over again. mass = 5.25 g heat capacity of water = 1 calorie/gram °C Change in temperature = 62.8°C - 5.3°C = 57.5 °C heat = 5.25 g * 1 calorie/gram °C * 57.5 °C = 301.9 calories Rounded to 3 significant figures, it is 302 calories Q=SM∆T=4.18*5.25 * (62.8-4.3) = 1280 J 1280 J * (1 cal/4.18 J) = 307 cal
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “How much heat is required to heat 5.25 g of water h2o from 5.5? ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers