Chemistry, 30.10.2021 18:40, MrJonezy4529
1. A steel is 80 cm long at 40 oC. The coefficient of linear expansion for steel is 12 x 10-6 oC-1. The increase in length and the final length when it is at 140 oC will be…
QUESTION : ΔL...? then L..?
2. An iron rod heated from 30 oC to 80 oC. The final length of iron is 115 cm and the coefficient of linear expansion is 3×10-3 oC-1. What is the original length and the change in length of the iron ?
QUESTION L0...then ΔL?
3. at 20oC, the length of a sheet of steel is 50 cm and width is 30 cm ,if the coefficient of expansion for steel is 10-5 oC-1.
determine the change in area and the final area at 60oC
question ..ΔA...?A...?
4. An object made of metal has a length of 20 cm. How long is the end of the metal if there is a temperature change of 40 ° C? (metal length coefficient 0.001 ° C-1)
5. A plate made of aluminum with the initial area of 50 cm2 has a temperature of 10oC. If the plate is heated to 100oC, what is the extensive increase in aluminum? (Aluminum Length Coefficient = 2.4 × 10-5 / OC)
Answers: 1
Chemistry, 22.06.2019 23:00, hailey5campbelp7d1c0
In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next
Answers: 2
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
1. A steel is 80 cm long at 40 oC. The coefficient of linear expansion for steel is 12 x 10-6 oC-1....
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