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

The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 1.00 g is supported by a needle, the tip of which is a circle 0.200 mm in radius, what pressure is exerted on the record in kPa

Is mixing salt and pepper physical or chemical change?

Justify and tell why an atom is neutral though it has positively charged protons and negatively charged electrons

How does the water cycle affect the weather?

A child has been diagnosed with bacterial otitis externa and will be receiving eardrops. Which of these eardrops are appropriate for this infection? (Select all that apply.) a. Floxin Otic b. Cortic c. Debrox d. Acetasol HC e. Cipro HC Otic

Table salt is formed when an electron is transferred from a sodium atom to a

Convert 45 joules to heat calories

What is 450 g of flour a measure of? A) Weight B) Inertia C) Gravity D) Mass

List the four (4) ways you can tell that a chemical reaction has occurred.

A student has 2.99 g of Potassium Permaganate. How many mL of a. 532 M solution can the student make? How does one solve this?