8. A rectangular metal sheet with length 2.5 m and width 1.9 m
is used to make a cylinder. The...
Chemistry, 08.04.2020 11:45 MickeyAppleX
8. A rectangular metal sheet with length 2.5 m and width 1.9 m
is used to make a cylinder. The metal sheet can be rolled on
its length or on its width. The two cylinders that can be
formed are shown in the diagram.
a. Calculate the radius to one decimal place for:
i. the taller cylinder
II. the shorter cylinder.
Answers: 3
Chemistry, 23.06.2019 06:40, hackman1216
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?
Answers: 1
Chemistry, 23.06.2019 10:20, Thejollyhellhound20
Based on the equation, how many grams of br2 are required to react completely with 29.2 grams of alcl3? alcl3 + br2 → albr3 + cl2 48.7 grams 52.6 grams 56.7 grams 61.3 grams
Answers: 3
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