1. a substance with a pH of 3

2. a substance with a pH of 10

3. a substance with a pH of 7

4. an indicator

5. a scale that represents the concentration of H30+, 0-14

A.) phenolphthalein

B.) base

C.) pH scale

D.) neutral

E.) acid

Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true? Check all that apply. a.

Un comerciante compra 300 litros de aceite a 3 L y los vendió 5 L qué beneficio obtuvo

If the earth were to cease rotating about its axis, then what is the increase in the value of gravity?

Star a is green, star b is yellow, and star c is red. which one of these is the hottest star?

3. If a force is a push or pull on an object by another object that is touching it, then it is called a (n)

To determine waves frequency you must know the what

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.

Who first described the double-helix structure of DNA?

Suppose you are holding a basketball while standing still on a skateboard you are and the skateboard have a mass of 50 kg you throw the basketball with a force of 10 N what is your acceleration before and after you throw the ball