The following volumes of stock reagents were combined in a test tube (they were measured with a buret). What is the concentration (in M) of Bleach in the tube at the moment they are combined? Reagent Stock Solution Conc. (M) Volume Added (mL)
Allura Red 1.0 X 10-4 4.49
Distilled Water 21.10
Bleach 5.0 X 103 2.75

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Calculate the number of moles of ethane in 100 grams

What is the main reason why some developing countries fear the increase the free trade policies around the world?