Silicon dioxide reacts with carbon upon heating to produce silicon carbide (SiC) and carbon monoxide. SiO2(s) + 3C(s) → SiC(s) + 2CO(g) What mass of carbon is required to react completely with 15.70 g of SiO2?
When 152 g of SiO2 reacts with excess carbon, what mass of SiC is produced?
If 42.2 g of CO were produced by this reaction, what mass of carbon must have reacted?

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

How many grams of mgbr2 are needed to produce 75g or metal?