Select two options from the following list that qualify as types of pure substances. a substance an atom an element a particle matter a compound

What does the name 2-butene tell you about this hydrocarbon's molecular structure? A. There are two carbon atoms and all single carbon bonds. B. There are two carbon atoms and a double carbon bond. C.

Which is true of the buoyant force? It acts in the upward direction. It acts with the force of gravity. It makes an object feel heavier. It acts in the downward direction.

A certain ore is 37.3% nickel by mass how many kilograms of this ore would you need to dig up to have 10.0g of nickel

What is the percent concentration of a sodium fluoride solution made by dissolving 65.4 grams of sodium fluoride in 125.1 grams of water?

Which statement about an element's average atomic mass is correct? a. It is determined by counting the number of isotopes in a sample of the element. b. It is equal to one-twelfth the mass of the most common isotope. c.

If you have 6 moles of CH4 how many moles of H2O can be produced

What is the definition of substance in your own words.

A 1.3 g sample of gold (specific heat capacity = 0.130 J/g °C) is heated using 86.9 J of energy. If the original temperature of the gold is 25.0°C, what is its final temperature?

In what applications might coal replace petroleum based fuel

How many molecules are in 7.5 mol of h2o