Which cell structure is mainly responsible for releasing energy from food molecules in some single called orangisms

What does x represent in the formula for the compound xcl4?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

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