Energy is required to produce a chemical change during

(1) chromatography

(2) electrolysis

(3) boiling

(4) melting

Draw a venn diagram and fill in the characteristics of the states of matter

How may a substance be tested to determine whether or not it is an element

Choose all that apply. Why do we use graphs? to present information to show relationships to catch a reader's attention to make information easily available

What did dmitri mendeleev do?

Environmental science is the study of

How many moles of water vapors are formed when 10L of butane gas is burned in oxygen at STP?

What type of fuel must be most carefully contained and protected

The bacteria and fungi that break down the plant and animal is classified as?

Which term best describes the substances that cause oil and water molecules in salad Dressing to interact and mix? surfactants miscible liquids immiscible liquids compressed molecules

C3H8 + 5O2 - > 3CO2 + 4H2O According to this equation, which ratio of oxygen to propane is correct? 1 - 5 grams O2 / 1 gram C3H8 2 - 5 moles O2 / 1 mole C3H8 3 - 10 grams O2 / 11 grams C3H8 4 - 10 moles O2 / 11 moles C3H8