On a contour map, what do contour lines that are close together represent?

a.) steep slopes

b.) gentle slopes

c.) wavy land

d.) no change in elevation

What happens when an atom loses electron?

Which compounds are Lewis acids? Select all that apply A. NaHCO3 B. Br- C. (CH3CH2) 2HC+ D. BBr3

Using the phase diagram for water, what phase is water in at 50 degrees Celsius and 2.00 atmospheres? Solid Liquid Gas Vapor

If a sample has a mass of 245.8 grams and takes up 94ml of space, what is the density of the sample?

Which source is the most reliable? a. a report published on wikipedia b. an article evaluated by other scientists c. a blog about plant growth d. an advertisement about weight loss

What does the symbol C p stand for?

Which of the following is not true of science? 1. Science offers proof of a claim 2. Science is a way of knowing 3. Science is a process 4. Science provides support or fails to provide support to claim

What happens to the velocity of a sound wave in air if the temperature of the air increases

Determine the [oh-] concentration of a 0.741 m koh solution at 25°c.

In the lab, students decomposed a sample of calcium carbonate by heating it over a Bunsen burner and collected carbon dioxide according to the following equation: CaCO3 (s) CaO (s) CO2 (g) (a) How many mL of carbon dioxide gas were generated by the