Chemistry, 07.10.2020 01:01 jenifferplowman
During a Lab exercise a student had a 142 grams mass of gold (Au) that was at a temperature of 100.0°C. The mass of gold (Au) was placed in to a styrofoam cup that contained 30.0 grams of H2O that was at a temperature of 17.0° C. After the gold (Au) was placed into the water, the temperature rose to 27.5° C. Using the formula
M(metal) x Δ T(metal) x Sp H(metal) = M(H2O) x Δ T (H2O) x 4.2J/g * °C
calculate the specific heat of Gold (Au) metal.
Answers: 2
Chemistry, 22.06.2019 00:30
Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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Chemistry, 22.06.2019 21:30
What is another way to determine mass times acceleration?
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During a Lab exercise a student had a 142 grams mass of gold (Au) that was at a temperature of 100.0...
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