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Question 3 7 points Save Answer Cartridge brass is composed of 70 wts of copper and...
Calculate % composition: Brass is an alloy made of copper and zinc. The density of copper...
Calculate % composition: Brass is an alloy made of copper and zinc. The density of copper is 8.96 g/mL and the density of zinc is 7.14 g/mL. If the density of a sample of brass is 8.72 g/mL, what is the percent copper in the brass? Hint: “Grandma’s chocolates” are composed of a caramel center and a chocolate coating. The measured density of a “Grandma’s chocolate” is 1.045 g/cm3. Knowing that the density of her caramel is 1.160 g/cm3 and...
0.25 points Question 2 67 CU %= whole A typical sample of brass is 67% copper...
0.25 points Question 2 67 CU %= whole A typical sample of brass is 67% copper and 33% zinc. How many moles of zinc are dissolved in grams of copper? 0.33 moles 0.50 moles 0.67moles 1.0 moles 0.25 points Question 3 When dealing with solutions which of the following laws is not applicable? nition of Energy Question 1 Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion? addition of a material which...
need answer to number 7 the graph has nothing to do with the quedtion its a...
need answer to number 7
the
graph has nothing to do with the quedtion its a critial thinking
question
8.93 On the grid below, make a graph of density vs. 4. Cu. The graph should include the following points: density of pure Cu at 100% Cu and density of pure Za at 016 Cu. Draw a straight line connecting these 2 points. In order to determine an estimate of the composition of the brass simply find the density of the...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL)...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL) of 30%. (a) If its cold worked radius is 6.4 mm, what was its radius before deformation? (b)What are its tensile and yield strengths? 140 120 800 900 1040 Steel 1040 S 700 800 100 120 600 a700 80 100 E 500 600 400 Br Brass 500 300 Capper 40 400 200 Capper 300 20 100 200 10 20 30 40 50 70 10...
Answer all the questions or leave it 25 points Save Aeswer Given the diameter D of...
Answer all the questions or leave it
25 points Save Aeswer Given the diameter D of a rod, what equation would you use to calculate its cross-sectional area? 25 points Save Answer Objects made of the same material but of different shape will have different resistivity value. O True O False A copper rod has a resistance 2.06a.When a voltage of 3.95volts is applied across the copper rod. What is the electric current (in umit of amp) running through the...
QUESTION 3 0.5 points Save Answer A flask is filled with 1.56 moles of a gas...
QUESTION 3 0.5 points Save Answer A flask is filled with 1.56 moles of a gas at 14.2 K and 636.7 mm Hg. The flask is then opened and an additional 1.56 moles are added. The temperature of the flask is then changed to 136.3 K. What is the pressure (in atm) of the flask under these final conditions? QUESTION 4 0.5 points Save Answer What is the density in g/L) of a gas with a molar mass of 177.9...
0.5 points Save Answer g/L. QUESTION 3 The density of nitric oxide (NO) gas at 0.970...
0.5 points Save Answer g/L. QUESTION 3 The density of nitric oxide (NO) gas at 0.970 atm and 34.9 °C is O 1.15 O 10.2 O 0.0384 O 0.339 O 0.869 QUESTION 4 0.5 points Save Answer Of the following gases, has density of 0.190 g/L at 308 K and 1.20 atm. OOOOO 1:1. .... . .. . .. .... .......
QUESTION 29 3 points 3 points Save Answer Save Answer happens when there is a decrease...
QUESTION 29 3 points 3 points Save Answer Save Answer happens when there is a decrease in the overall price level. QUESTION 30 3 points Save Answer This morning in the supermarket, you found an old shopping list in your wallet and the receipt from the last year for all the things on the list. You wanted to do a quick economics experiment so you bought everything on the list again for $122. The receipt says that on the same...
The answer for the first part is 132.786 QUESTION 7 20.00000 points Save Answer NOTE: This...
The answer for the first part is 132.786
QUESTION 7 20.00000 points Save Answer NOTE: This is two part question. An 1100 kg trailer is hitched to a 3200 kg car. The car and trailer are traveling at 60 km/h when the driver applies the brakes on both the car and trailer. Knowing that the braking forces exerted on the car and the trailer are 3700 N and 800 N respectively, determine (a) the distance traveled [m) by the car...
PULSO Question 70 Question 7 3 points Save Answe Gina likes peanut butter and consumes them...
PULSO Question 70 Question 7 3 points Save Answe Gina likes peanut butter and consumes them in a fixed proportion. Her utility function takes the form below U = min (2x,y) Given Gina's preferences, which of the following combinations of jolly and peanut butter would yield a utility of 4? 2 tablespoons of jelly and 2 tablespoons of peanut butter O tablespoons of jelly and 4 tablespoons of peanut butter 2 tablespoons of jelly and 4 tablespoons of peanut butter...
0.25 points Question 2 67 CU %= whole A typical sample of brass is 67% copper and 33% zinc. How many moles of zinc are dissolved in grams of copper? 0.33 moles 0.50 moles 0.67moles 1.0 moles 0.25 points Question 3 When dealing with solutions which of the following laws is not applicable? nition of Energy Question 1 Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion? addition of a material which...
need answer to number 7
the
graph has nothing to do with the quedtion its a critial thinking
question
8.93 On the grid below, make a graph of density vs. 4. Cu. The graph should include the following points: density of pure Cu at 100% Cu and density of pure Za at 016 Cu. Draw a straight line connecting these 2 points. In order to determine an estimate of the composition of the brass simply find the density of the...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL) of 30%. (a) If its cold worked radius is 6.4 mm, what was its radius before deformation? (b)What are its tensile and yield strengths? 140 120 800 900 1040 Steel 1040 S 700 800 100 120 600 a700 80 100 E 500 600 400 Br Brass 500 300 Capper 40 400 200 Capper 300 20 100 200 10 20 30 40 50 70 10...
Answer all the questions or leave it
25 points Save Aeswer Given the diameter D of a rod, what equation would you use to calculate its cross-sectional area? 25 points Save Answer Objects made of the same material but of different shape will have different resistivity value. O True O False A copper rod has a resistance 2.06a.When a voltage of 3.95volts is applied across the copper rod. What is the electric current (in umit of amp) running through the...
QUESTION 3 0.5 points Save Answer A flask is filled with 1.56 moles of a gas at 14.2 K and 636.7 mm Hg. The flask is then opened and an additional 1.56 moles are added. The temperature of the flask is then changed to 136.3 K. What is the pressure (in atm) of the flask under these final conditions? QUESTION 4 0.5 points Save Answer What is the density in g/L) of a gas with a molar mass of 177.9...
0.5 points Save Answer g/L. QUESTION 3 The density of nitric oxide (NO) gas at 0.970 atm and 34.9 °C is O 1.15 O 10.2 O 0.0384 O 0.339 O 0.869 QUESTION 4 0.5 points Save Answer Of the following gases, has density of 0.190 g/L at 308 K and 1.20 atm. OOOOO 1:1. .... . .. . .. .... .......
QUESTION 29 3 points 3 points Save Answer Save Answer happens when there is a decrease in the overall price level. QUESTION 30 3 points Save Answer This morning in the supermarket, you found an old shopping list in your wallet and the receipt from the last year for all the things on the list. You wanted to do a quick economics experiment so you bought everything on the list again for $122. The receipt says that on the same...
The answer for the first part is 132.786
QUESTION 7 20.00000 points Save Answer NOTE: This is two part question. An 1100 kg trailer is hitched to a 3200 kg car. The car and trailer are traveling at 60 km/h when the driver applies the brakes on both the car and trailer. Knowing that the braking forces exerted on the car and the trailer are 3700 N and 800 N respectively, determine (a) the distance traveled [m) by the car...
PULSO Question 70 Question 7 3 points Save Answe Gina likes peanut butter and consumes them in a fixed proportion. Her utility function takes the form below U = min (2x,y) Given Gina's preferences, which of the following combinations of jolly and peanut butter would yield a utility of 4? 2 tablespoons of jelly and 2 tablespoons of peanut butter O tablespoons of jelly and 4 tablespoons of peanut butter 2 tablespoons of jelly and 4 tablespoons of peanut butter...
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