Chemistry, 18.09.2019 20:00 snicklegirlp4isqr

Which substance accounts for nearly 80 percent of earth's atmosphere?
a. oxygen
b. nitrogen
c. carbon dioxide
d. argon

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 19:00, lizbeth232001

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

Answers: 2

continue

Chemistry, 22.06.2019 21:50, nyajah13

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3

Answers: 2

continue

Chemistry, 23.06.2019 03:00, rhianna18

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

Answers: 1

continue

Chemistry, 23.06.2019 05:50, teneciastclair7

What is true of composite volcanoes?

Answers: 1

continue

You know the right answer?

Which substance accounts for nearly 80 percent of earth's atmosphere?
a. oxygen
b. nitr...