How many moles of nitrogen, N, are in 82.0 g of nitrous oxide, N2O?

The mass number of an atom is equal to which of the following? Question 4 options: A. the number of protons plus the number of electrons in an atom B. the number of electrons circling the nucleus of an atom C.

What form of energy are fossil fuels?

The best substance to use for cleaning a greasy frying pan is lemon juice. True False

What does soil have to do with rock

What is the precipitate that will form from the reaction of barium chloride dihydrate with sodium sulfate decahydrate?

A major component of gasoline is octane. When liquid octane is burned in air it reacts with oxygen gas to produce carbon dioxide gas and water vapor. Calculate the moles of carbon dioxide produced by the reaction of of oxygen.

Which of the following statements about transition metals is true? a. They are never found uncombined in nature. b. They include familiar metals such as gold, silver, copper, and nickel. c.

Elements can be separated from one another. Question 6 options: True False

One gram of lipid yields about 9kcal of energy. that is due to the high abundance of which chemical element?

Which of the following happens during a chemical change? Check all of the boxes that apply 0 One atom or more changes into atoms of another element. New substances with different properties are formed. O Solids, liquids, or gases may form.