In TLC chromatography of plant pigments, why do different pigments travel up the plate at different rates

A scientist mixes water (containing no salt) with a solution that contains 45% salt. she wants to obtain 180 ounces of a mixture that is 30% salt. how many ounces of water and how many ounces of the 45% salt solution should she use?

How did the quantum mechanical model of the atom improve on bohr's atomic model?

What is hybridisation

What is not true about weight

Which of the following is one of the basic tastes to which the tongue responds? A) Peppery. B) Lemony. C) Yeasty. D) Salty.

In which reaction is mass converted to energy by the process of fission?

Watch It! #3 After watching the examples in the video of radiation, list 2 other examples that you come up with on your own.

Tear gas has the composition 40.25% carbon, 6.19% hydrogen, 8.94% oxygen, 44.62% bromine. what is the empirical formula of this compound?

Explain why ships traveling from east to west across the Atlantic take days longer than ships traveling the same distance from west to east.

In a titration 25.0 ml of a. 20 M NaOH solution is used to neutralize 10.0 ml of HCl. Write the equation for this neutralization reaction and calculate the molarity of the acid.