Show that an aqueous solution with a pH of 5 has a hydroxide ion

concentration of 1*10^9M

After a quick review of the textbook, rank the following elements in order of increasing density: (A) copper, (B) nickel, (C) titanium, (D) silicon.

Answer these questions. Imagine three cities in the desert, all at about the same altitude and latitude. One city (A) is surrounded by a dark-colored rocky surface. Another city (B) is surrounded by a light-colored sandy surface.

Why don't animal cells need chloroplasts? A) Animals do not make their own food. B) Animal cells make their own chlorophyll. C) Animal cells collect sunlight another way. D) Animals use photosynthesis to make their own food.

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

Transforme 0,4m em mm

Why do marine west coast climates have much precipitation

Wright true or false: 1. A baseball has more momentum than a tennis ball traveling at the same speed. 2. A light ball has more inertia than a heavy ball 3. The less momentum a bowling ball has, the easier it is for that ball to knock down pins. 4.

The interference of two sound waves of slightly different frequencies produces

8. A force of 80 pounds on a rope is used to pull a box up a ramp inclined at 100 from the horizontal. The rope forms an angle of 330 with the horizontal. How much work is done pulling the box 25 feet along the ramp?

A raindrop has a mass of 5.4 * 10-7 kg and is falling near the surface of the earth. Calculate the magnitude of the gravitational force exerted (a) on the raindrop by the earth and (b) on the earth by the raindrop.