Chemistry, 26.07.2021 17:20 mathhelper22
- (11) Deduce the number of dyes in food colouring H. (iii) Suggest why food colouring F does not move during the experiment. (iv) Explain which two food colourings contain the dye that is likely to be the most soluble the solvent. (b) Determine which food colouring contains a dye with R, value closest to 0.67 Show your working. â
Answers: 3
Chemistry, 22.06.2019 18:30
Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.
Answers: 3
Chemistry, 22.06.2019 19:00
Which is the solubility product expression for caf2(s)? ďżź [ca2+]/[fâ]2 ďżź [ca2+][f2â] ďżź [ca]+[f]2 ďżź [ca2+][fâ]2
Answers: 3
Chemistry, 22.06.2019 20:00
Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radicalâradical combination reaction is the formation of a new electronâpair bond. consider the chemical equation. n(g)+no(g)âśnno(g) n(g)+no(g)âśnno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)
Answers: 1
Chemistry, 22.06.2019 22:30
Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 sâ1. part a part complete what is the half-life for this reaction?
Answers: 3
- (11) Deduce the number of dyes in food colouring H. (iii) Suggest why food colouring F does not mo...
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