Chemistry, 14.10.2021 01:00 firdausmohammed80
1. Many things can affect the evaporation of solvents during a chromatography experiment. To allow researchers to compare results across experiments under different conditions, scientists use an Rf value, that is the ratio of the distance the pigment travelled to the distance the solvent travelled. This number remains constant across trials. Calculate the Rf value for each pigment.
Answers: 2
Chemistry, 23.06.2019 11:30
If 4.8 moles of x and 3.4 moles of y react according to the reaction below, how many moles of the excess reactant will be left over at the end of the reaction? 3x + 2y “yields”/ x3y2. a. 1.7 mol y left over b. 1.6 mol x left over c. 0.2 mol y left over d. 0.1 mol x left over
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Chemistry, 23.06.2019 14:30
If energy was included in a chemical reaction, on which side of the equation would it be written for an endothermic reaction?
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Chemistry, 23.06.2019 21:00
Using the periodic table choose the more reactive nonmetal s or as
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Chemistry, 23.06.2019 23:10
Exactly 1.00 ml of an aqueous solution of hno3 is diluted to 100.0 ml. it takes 29.78 ml of 0.0142 m ca(oh)2 to convert all of the hno3 to ca(no3)2. the other product of the reaction is water. calculate the molarity of the undiluted hno3 solution. petrucci, ralph h.. general chemistry (p. 144). pearson education. kindle edition.
Answers: 2
1. Many things can affect the evaporation of solvents during a chromatography experiment. To allow r...
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