Which two compounds are isomers of each other?
(1) ch3ch2cooh and ch3cooch2ch3
(2) ch3ch2cho and ch3coch3
(3) ch3chbrch3 and ch2brchbrch3
(4) ch3chohch3 and ch3chohch2oh

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?

Sand is more likely than shale to preserve fossils. true false

What is matter? a. anything that has mass and takes up space b. something that has volume and takes up space. c. things that have energy and take up space d. things that take up space but don't have mass