PLEASE HELP An unknown substance with a mass of 5 grams releases 16.1 joules of energy when undergoing a temperature decrease of 7 degrees Celsius. What is the specific heat of that substance and what substance is it?

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

Your question is not clear but if you can explain yourself i would be glad to .  just trying to : ))