What happened when the earth rotates?

What happens when the earth revolves?

How does the sun’s apparent movement affect what shadows do?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?

Amethod of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called