mpleting Part C 1.8 x 1023 lead atoms Express the mass in grams to two significant...
Part C How many aluminum atoms are in 3.78 g of aluminum? Express your answer in aluminum atoms using scientific notation. ΑΣΦ A1 atoms Submit Request Answer Part D What is the mass of 4.91 x 1021 platinum atoms? Express your answer in grams of platinum. Vo ΑΣΦ Submit Request Answer
Part A Calculate the mass of 1.23 x 1024 helium atoms. Express your answer in grams of helium. Vo ΑΣΦ mass of He atoms g He Submit Request Answer Part B Determine the number of atoms in a 48.3-g sample of zinc. Express your answer in zinc atoms using scientific notation. ΑΣφ Zn atoms Submit Request Answer
Problem 7.12 Part A 0.145-kg baseball pitched horizontally at 37.1 /s strikes a bat and is popped straight up to a If the contact time is 2.90 ms, calculate the magnitude of the average force on the ball during the contact. height of 59.5 m. Express your answer using two significant figures F- Submit My Answers Give Up Part B Calculate the direction of the average force on the ball during the contact. Express your answer using two significant figures....
Part D Calculate the number of moles of C,Hg in 2.01 x 1023 molecules of C, H. Express your answer using three significant figures. O ALDO ? moles of C,H Submit Previous Answers Request Answer Part C How many moles of sulfate ions (SO?) are present in 1.6 moles of Al2(SO4),? Express the number of moles to two significant figures. - Po A¢ * Ro ? ns0 moles
Review | Consta Part A 3.40 1023 atoms of lanthanum, La Express your answer to three significant figures and include the appropriate units. OH MÀ O O ? Value Units Request Answer
11.006g Cr Express your answers using four significant figures VAED atoms Submit Request Anewer Part B 36.899gS Express your answers using four significant figures VAD4 7 atoms 18.567 g Pt Express your answers using four significant figures atoms Submit Request Answer Part D 89.127 g Sn Express your answers using four significant figures n= atoms
Part A What is the specific heat of liquid water? Express your answer using four significant figures. 四? J/g.° C Submit My Answers Give Up Part B What is the molar heat capacity of liquid water? Express your answer using four significant figures. J/mol.° C Submit My Answers Give Up
« previous | 8 of 31 | next » Problem 11.50 Part A Two gerbils run in place with a linear speed of 0.40 m/s on an exercise wheel that is shaped like a hoop Find the angular momentum of the system if each gerbil has a mass of 0.22 kg and the exercise wheel has a radius of 7 cm and a mass of 6.0 g Express your answer using two significant figures kg m2/s Submit My Answers Give...
« previous| 3 of 8 next » Problem 16.21 Part A To what temperature must the sleeve be heated in order for it to slip over the shaft? At 18.80 C a brass sleeve has an inside diameter Express your answer using two significant figures of 2.22068 cm and a steel shaft has a diameter of 2.22338 cm. It is desired to shrink-fit the sleeve over the steel shaft. oC Submit My Answers Give Up Part B Alternatively, to what...
Problem 28.63 Part A What is the current through the 10 Ω resistor in the figure (Figure 1)? Express your answer to two significant figures and include the appropriate units oa Value Units Figure 1 1 of 1 Submit My Answers Give Up Part B Is the current from left to right or right to left? 12V 5Ω left to right right to left 1012 3 V Submit My Answers Give Up Provide Feedback Continue 9 V