Chemical reactions provide support for the law of conservation of matter because which of the following is true about the atoms of the reactants and products in a chemical reaction

Explanation for basic character?

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

Is a pencil falling to the floor anon contact force, a force, or a contact force