What is an ionic solid?
a. many metal atoms bonded together to from a solid
b. many positive and negative ion bonded to from a solid
c. many nonmetal atoms bonded together to from a solid
d. one positive ion and one negative ion boded to form a solid

What reaction is taking place? 02 + c3h8 = h20 + co2

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.