What are the products of the single replacement reaction between Zn+2 metal and NaCl 1.
What is the single element created?

2.
What is the ionic compound created?
a. Na2
b. Cl2
C. ZnCl2
d. ZnNa2
e. No reaction
f. ZnCl

The answer is a because

Work done = force ×distancebut force = mass ×gravityand gravity = 10m\s force = 2×10 = 20 work done = 20×3 = 60 joules

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.