Please make the answers simple , thanks : 1) List the following in order of incr
ID: 831411 • Letter: P
Question
Please make the answers simple , thanks :
1) List the following in order of increasing solubility in water CH 3-O-CH3 CH3-CH2-CH2-CH3 HO-CH2- CH2-OH CH3-CH2-CH2-OH 2) How many grams of KHCO3 must you add to 250 mL of water to prepare a 0.600 %w/v solution? 3) What volume of 6.20 %w/v NH4Cl solution contains 5.40 g of the salt? 4) What is the concentration in %w/v of a NaCl solution that is 42 mg NaCl per liter of solution? 5) What volume of a 2.8 M NaCl solution contains 0.70 mol of NaCl? 6) What is the molarity of a solution with 23.83 mg of MgCl2 in 275 mL? 7) The concentration of H2SO4 is 36M. What volume is required to prepare 6.0 L of a 0.12 M solution of the acid? 8) A solution is prepared by adding 10 g of sugar to 990g of water. What is the solvent and what is the solute? 9) How many mL of water must be added to 200 mL of a 0.50 M solution to make it 0.25 M? 10) Classify the following as electrolytes or non-electrolytes A) KCl B) C2H5OH C) NaOH D) NH3 (a base) E) C6H1206Explanation / Answer
1) b, d, c, a
2)0.600 = w / 250 mL ---> w=(0.600)(250mL) = 150g
3) 6.20= 5.40g / v ---> v = 5.40g / 6.20 = 0.871 mL
4)w/v%= .042g / 1000 mL = .000042 g/mL
5)M=m/v ----> 2.8= 0.7/ v --> v=0.7 / 2.8 = 0.25 mL
6)M= (23.83g / 95.211 FW) / (275 mL) = 9.1E-4
7)M1V1=M2V2 --> (36M)(V1)=(0.12M)(6.0L) ---> V1=0.02L or 20 mL
8)water is the solvent, sugar the solute
9)M1V1=M2V2 --> (0.25)(V1)=(0.50)(200mL) ---> 400mL
10) A) electrolyte B) nonelectrolyte C) electrolyte D) non-electrolyte E) non-electrolyte