blem 7.30 Calculate the moles of Cu in 3.5×1021 atoms of Cu. Express your answer using...
I need help Sewani 1151 <EC Ch 6-7 Problem 7.30 Part A Calculate the number of Li atoms in 5.6 moles of Li Express your answer using two significant figures. νοΙ ΑΣφ ? NI; = 3.4 atoms of Li Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B Calculate the number of CO2 molecules in 2.25x 10-2 mole of CO2 Express your answer using three significant figures. EVO AED ? Noo;- molecules of co Type...
How many atoms are in each elemental sample? Part A.) 3.8 mol Cu Express your answer using two significant figures. Part B.) 5.1×10−3 mol C Express your answer using two significant figures. Part C.) 16.1 mol Hg Express your answer using three significant figures. Part D) 0.235 mol Na Express your answer using three significant figures.
? Part C moles of Crin 4.77x1023 atoms of Cr Express your answer using two significant figures. moles Subrmit Previous Answers Request Answer X incorrect; Try Again; 5 attempts remaining: no points deducted
How many moles of NH3 are produced when 1.7 moles H_2 reacts? Express your answer using two significant figures. How many moles of H_2 are needed to react with 0.80 mole N_2? Express your answer using two significant figures. How many moles of N_2 reacted if 0.65 mole NH_3 is produced? Express your answer using two significant figures.
How many moles of ibuprofen contain 1.51×10^23 atoms of carbon? Express your answer using three significant figures.
Calculate: Part A) [H+] for [OH−]=3.5×10^-4 M Express your answer using two significant figures. Part B) [H+] for [OH−] =8.4×10^-9 M Express your answer using two significant figures. Part C) Calculate [H+] for a solution in which [OH−] is 100 times greater than [H+]. Please show how you solved it, thanks! Part A Calculate (H+] for Express your answer using two significant figures. VO AED ? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining The ion-product...
Calculate the number of moles of HCN produced when 12.4 moles of Ozare consumed. Express your answer using three significant figures. 2 NH3 • 2 CH4 + 3O2--> 2 HCN + 6 H2O Calculate the number of moles of HCN produced when 12.4 moles of Ozare consumed. Express your answer using three significant figures. 2 NH3. 2 CH4 + 3O2--> 2 HCN + 6 Hao Calculate the mass of NO2, in grams, needed to completely react with 25.9 grams of...
A sample of the male sex hormone testosterone, C19H28O2, contains 3.98×1021 atoms of hydrogen. How many atoms of carbon does it contain? Express your answer in atoms to three significant figures. How many molecules of testosterone does it contain? Express your answer in molecules to three significant figures.
Part A How many moles of sulfur are present in 3.5 moles of Al2(SO4)3? Express the number of moles to two significant figures. V AX“ o ? 0.5 moles Part B How many moles of aluminum ions are present in 0.36 moles of Al(SO4)3? Express the number of moles to two significant figures. VO AEM O O ? TAI = 0.6 mol Submit Previous Answers Request Answer Part How many moles of sulfate ions (S0,2 - ) are present in...
T180 Calculate the percent dissociation of HF (Ka=3.5×10−4) in: Part A 0.050 M HF Express your answer using two significant figures. Part B 0.50 M HF Express your answer using two significant figures.