If the reactioon is , then it has energy than needed for the reaction and is . If the reaction is, then it energy needed for the reaction and is from the surroundings.

Endothermic vs. Exothermic packet Grade 8

I chose chemistry, but it's from science. Thanks to whoever can help me! :)

Idon’t know how to solve this question

There are main groups in the modern periodic table of elements

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