What is a sample of matter that has definite physical and chemical properties?

Which of the following compounds consist of double covalent bond? A:CS_2 B:H_2O C:HCl D:N_2

How many atoms are in an oxygen molecule (O2) ?

What are some of the chemical properties of silver?

If 100g of Au-198 decays to 6.25g in 10.8 days, what is the Half-Life of Au-198. Use Ae = Ao (.5) ^ t / t1/2

How are shadows formed?

If the average American throws away 4.5 lb of trash each day, and the population of the US is estimated to be 311 million people, calculated the number of metric tons of garbage thrown away in the US each year.

Difference between radical and compound

Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent

How are reactions and products related in a chemical reaction?

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.