How is the number 7.89 x 10^3 expressed in regular numerals?

7,890

78,900

6789

What is one similarity among elements in a group? A. atomic mass B. chemical properties C. atomic weight D. practical uses

How do you convert 0.85 atm to mmHg

Suppose element X is a poor conductor of electricity and breaks when hit with a hammer. Element Z is a good conductor of electricity and heat. In what area of periodic table does each element most likely belong?

If you are studying cells and heredity, you are most likely taking a chemistry class. a. True b. False

What are the end products of photosynthesis?

Which of the following is not true about the importance of the carbon cycle to living things? a. Plants use carbon dioxide to make energy. b. Carbon is the second most abundant molecule in organisms. c.

Fruit flies can either have a brown body or a black body. The allele for a brown body (B) is dominant to the allele for a black body (b). A brown fruit fly was crossed with a black fruit fly as shown below.

A light-year measures the distance a light beam can travel in one year. One light-year is equal to 9 500 000 000 000 kilometers.

The first ionization energy, e, of a potassium atom is 0.696 aj. what is the wavelength of light, in nm, that is just sufficient to ionize a potassium atom? values for constants can be found here.

A gene is a to a chromosome as (A) a pea is to a pod (B) a front to a back (C) a bike is to a car (D) a building is to a window