An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 6.00 g of this compound produced 8.80 g of carbon dioxide and 3.60 g of water.
part a: how many moles of carbon, c , were in the original sample? express your answer numerically in moles. part b: how many moles of hydrogen, h , were in the original sample? express your answer numerically in moles.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.