FREE POINTS What coefficient is needed to balance this equation? Fe + 4H2O --> Fe6O4 + 4 H2

a) 2
b) 10
c) 6
d) 8

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

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.