3 attempts left Check my work Be sure to answer all parts. Calculate the minimum uncertainty...
3 attempts left Check my work Be sure to answer all parts. Calculate the molalities of the following aqueous solutions: (a) 127 M sugar (CiHOn) solution (density of solution 1.12 g/mL) 1.85 (b) 0.829 M NaOH solution (density of solution 1.04 g/mL (c) 5.21 M NaHCO solution (density of solution 1.19 g/mL) 2 3 4
3 attempts left Check my work Be sure to answer all parts A solution of 5.06 g of a compound having the empirical formula CoHjP in 25.0 g of benzene is observed to freeze at 2.3°C. Calculate the molar mass of the solute and its molecular formula. 615 Molar Mass Molecular Formula The normal freezing point of benzene is 5.50°C and the Kf for benzene is 5.12°C/m.
3 attempts left Check my work Be sure to answer all parts. Calculate the K, of a weak acid if a 0.019M solution of the acid has a pH of 3.09 at 25°C. x 10 (Enter your answer in scientific notation.)
3 attempts left Check my work Be sure to answer all parts. Calculate the molarity of each of the following solutions. (a) 6.03 g of methanol (CH3OH) in 1.50 x 102 mL of solution: 1.37 mol/L (b) 9.60 g of calcium chloride (CaCl,) in 2.20 x 102 mL of solution: mol/L (c) 7.37 g of naphthalene (C10H8) in 85.2 mL of benzene solution: mol/L
3 attempts left Check my work Be sure to answer all parts. Calculate the number of sodium ions, perchlorate ions, Cl atoms, and O atoms in 16.5 g of sodium perchlorate. Enter your answers in scientific notation. x 10 (select) sodium ions * 10 (select) perchlorate ions x 10 (select) Cl atoms * 10 (select) O atoms
3 attempts left Check my work Be sure to answer all parts. The pH of an acid solution is 6.11. Calculate the Ks for the monoprotic acid. The initial acid concentration is 0.010 M Enter your answer in scientific notation. eBook & Resources References Difficulty 2 Multipart Answer
3 attempts left Check my work Be sure to answer all parts. Calculate the amount of heat (in kJ) required to heat 1.73 kg of water from 18.27°C to 50.18°C. q= 1x10 kJ Enter your answer in scientific notation. .
3 attempts left Check my work Be sure to answer all parts. A volume of 66 mL of 0.080 M NaF is mixed with 22 mL of 0.20 M Sr(NO3)2. Calculate the concentrations of the following ions in the final solution.(Ksp for SrF2 2.0 x 10-10) [NO3-] [sx*] [F1 alue: 0.00 points 3 attempts left Check my work Enter your answer in the provided box. A construction company is installing an iron culvert (a long cylindrical tube) that is 34.0...
16 10 attempts left Check my work Be sure to answer all parts. 5.88 points Carry out each of the following conversions. a. 602 g to mg eBook mg References b. 3 L to LIL PL c. 2.3 cm to m m 17 10 attempts left Check my work Be sure to answer all parts. 5.92 points Carry out each of the following conversions. a. 700 g to oz eBook OZ References b. 7 ft to m m c. 4.0...
2 attempts left Check my work Be sure to answer all parts. Calculate the density in grams per liter of the following gases at 25.0°C and 705 torr. (a) NO (6) NO2 (c) O2 gL