Chemistry, 21.12.2019 04:31 jmeza502506
The temperature program for a separation starts at a temperature of 50°c and ramps the temperature up to 270°c at a rate of 10°c/minute. which statement is not true for this separation? a) at 10°c/minute, a total of 22 minutes is needed to reach 270°c. b) strongly retained solutes will remain at the head of the column while the temperature is low. c) weakly retained solutes will separate and elute early in the separation. d) the vapor pressure of strongly retained solutes will increase as temperature increases. e) strongly retained analytes will give broad peaks.
Answers: 3
Chemistry, 22.06.2019 01:30
100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
Answers: 1
Chemistry, 22.06.2019 07:40
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
Answers: 1
The temperature program for a separation starts at a temperature of 50°c and ramps the temperature u...
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