Whats a earthworms genus

What does it mean to say we understand many chemical reactions as transfers of electrons

Chromosomes are ?

A chemist measures the amount of fluorine gas produced during an experiment. He finds that 482. g of fluorine gas is produced. Calculate the number of moles of fluorine gas produced. Be sure your answer has the correct number of significant digits.

A sample that contains only SrCO3 and BaCO3 weighs 0.800 g. When it is dissolved in excess acid, 0.211 g car - bon dioxide is liberated. What percentage of SrCO3 did the sample contain?

How many ounces are in a 2-liter of soda? Just out of curiousity?

How many elements are in one molecule of Methane? How many elements are in one molecule of Ammonia? How many elements are in one molecule of Vinyl Alcohol? How many elements are in one molecule of Ethylene?

A banana split contains 1.12 million calories. What is the energy value in kilojoules? a. 1.12 kJ b. 4.686 x 10^3 kJ c. 4686 kJ d. 2.68 x 10^5 kJ e. 268 kJ

2 grams of a substance was dissolved in 75.0 g of water resulting in a temperature decrease from 23.1 ⁰C to 18.7 ⁰C. The specific heat of the solution is 4.18 J/g·⁰C. Calculate the amount of heat associated with the water.

Why do you think the soccer ball fell more slowly than the golf ball

Which of the following is an example of chemistry research in the main area of energy?. a. producing bioplastics. b. specific reactions between prescription drugs and chemicals in cells. c. developing rechargeable batteries. d.