The two ends of a solenoid act like

a. electrons.

b. a compass needle.

c. a circuit.

d. poles.

Suppose you wanted to make 100 grams of water. A. What is the molar mass of water (H2O) ? B. How many moles of water are in 100 grams? C. How many moles of hydrogen will you need? D. How many moles of oxygen will you need? E.

If 0.366 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained

How many moles of sulfuric acid (H2SO4) are needed to react completely with 6.8 moles of lithium hydroxide (LiOH) ? 2LiOH + H2SO4 → Li2SO4 + 2H2O A) 3.4 mol H2SO4 B) 6.8 mol H2SO4 C) 10.2 mol H2SO4 D) 13.6 mol H2SO4 answer: A) 3.4 mol H2SO4

In a 0.738 m solution, a weak acid is 12.5% dissociated. calculate ka of the acid.

How many moles of NaCl are in 2.5L of 0.50 M NaCl solution? O 1.3 mol 5.0 mol O 0.24 mol 29 mol

Biofuel is any fuel that is produced from living or once living matter in a short period of time, days, weeks, or even months.

How are revolution and year related

Read the scientific question below. "Does sunlight make plants live?" What is a likely hypothesis for the question?

A chemist is using a solution of HNO3 that has a pH of 3.75. What is [H+] for the solution?

What is the oxidation number for CO2