Chemistry, 23.12.2020 14:00, trashbinkid

Rafiq has heard that continued exposure to light for 10 days can change the colour of some blue dyes used to colour cotton clothing. He decides to test this. He takes a piece of clothing dyed with a blue dye which is suspected to lose colour on such exposure. He cuts the cloth into two pieces. Which experiment is likely to help him conclude if the dye indeed can change colour?
He should expose, for 10 days-

A. Both pieces under 2 identical lamps.
B. One piece under a lamp; keep the other in darkness.
C. One piece for 5 days and one for 10 days under identical lamps
D. One piece folded and one piece spread out under 2 identical lamps.

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 04:30, akeemedwards12

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Answers: 2

continue

Chemistry, 22.06.2019 06:30, darrriannn7241

What is the correct lewis structure for chloroform chcl3

Answers: 1

continue

Chemistry, 22.06.2019 10:30, mv603177

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Answers: 1

continue

Chemistry, 22.06.2019 12:00, KKHeffner02

Which statement best explains the relationship between an area is geography and the temperature of its surface water

Answers: 1

continue

Do you know the correct answer?

Rafiq has heard that continued exposure to light for 10 days can change the colour of some blue dyes...