Student includes All 5 of the following elements in the model- two strands

backbone with alternating sugar and phosphate group

correctly paired complementary bases

base pairs correctly connected to the backbone

each part labeled
(sugar, phosphate, cytosine, adenine, guanine, thymine)
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What physical property of gold makes panning a useful way to get gold from streams?

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?

Which of the following pairs of elements is most likely to form an ionic compound? a oxygen and fluorine b sodium and aluminum c calcium and chlorine d nitrogen and sulfur