subject
Chemistry, 13.05.2021 01:00 lexigarwood

Help please The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?
Data table
A. 101.53° C
B. 100.00° C
C. 101.02° C
D. 100.51° C
Which of the following solutions will have the lowest freezing point?
A. 1.0 mol/kg sucrose (C12H22O11)
B. 1.0 mol/kg lithium chloride (LiCl)
C. 1.0 mol/kg sodium phosphide (Na3P)
D. 1.0 mol/kg magnesium fluoride (MgF2)
Which of the following compounds will be most effective in melting the ice on the roads when the air temperature is below zero?
A. sodium iodide (NaI)
B. magnesium sulfate (MgSO4)
C. potassium bromide (KBr)
D. All will be equally effective.
Four different solutions have the following vapor pressures at 100°C. Which solution will have the greatest boiling point?
A. 98.7 kPa
B. 96.3 kPa
C. 101.3 kPa
D. 100.2 kPa
Four different solutions have the following boiling points. Which boiling point corresponds to a solution with the lowest freezing point?
A. 101.2°C
B. 105.9°C
C. 102.7°C
D. 108.1°C

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 21.06.2019 17:30
You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?
Answers: 1
question
Chemistry, 22.06.2019 01:20
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
Answers: 2
question
Chemistry, 22.06.2019 05:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
question
Chemistry, 22.06.2019 12:00
In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?
Answers: 1
You know the right answer?
Help please The four rows of data below show the boiling points for a solution with no solute, sucr...
Questions
question
Mathematics, 12.03.2021 14:00
question
Mathematics, 12.03.2021 14:00
question
Mathematics, 12.03.2021 14:00
question
Mathematics, 12.03.2021 14:00
question
Mathematics, 12.03.2021 14:00
Questions on the website: 13722367