The following data are obtained in the laboratory:
(A) The mass of clean , dry 250mL beaker
(B) The mass of the same beaker containing an unknown quantity of magnesium sulfate
The mass of the magnesium sulfate is obtained by subtracting (a) from (b) . Which of the following will provide the most accurate results?

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.

The answer is a. mars

The answer is  a: x-rays—2 and ultraviolet rays—3.  hope i !