Use the balanced equation given below to solve the problem that follows: Calculate the mass in grams of oxygen gas that must react in order to produce 50.0 g of water. 2 C4H10 + 13 O2 --> 8 CO2 + 10 H2O

88.9 g O2
115 g O2
68.3 g O2
21.0 g O2

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

How do you know when a chemical reaction has occurred

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community