Which of these is a base?

ammonia

vinegar

HCl

HNO3

Calculate the mass percent of carbon (c) in carbon tetrachloride, (ccl4), if the molar mass of carbon tetrachloride is 153.8g.

Which of these statements best describes the similarity between the two events shown in the diagram? Select one: a. Both may result in eclipses of the sun or moon. b. Both may cause the moon's shadow to fall on Earth. c.

Think about the lab procedure you just read. Label each factor below V for variable or C for constant. The amount of sugar in the solution, wether the sugar is stirred.

Elements that can be described by the hardness shininess and ductility

The formula for sodium sulfide is Na2S. explain what this formula means.

How to tell difference between hydrogen gas and oxygen gas?

Why do atoms have different speed

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.

How would you present weight change if Earth had twice the mass that it does

Which types of orbitals are found in the principal energy level n = 4? A. S, d B. S, p, d, f C. S, p D. S, p, f E. S, d, f