Other Chemistry Answers

Show the Electron dot Diagram and simplified electron configuration of the following Elements. Calcium, Neon, Hydrogen, and Lithium

What is the pH of 0.15M of hydroxylamine of kb=1.1*10^-8

Show the Electron dot Diagram and simplified electron configuration of the following Elements. Calcium, Neon, Hydrogen, and Lithium

what is the molal concentration of the solution by dissolving 2.69g of Phenol in 200 g of water

How much NAD+ (mw=663g/mol) would I need to weigh to make up a 10nM solution of 1ml?

a quantity of 14.68 mL of a KOH solution is needed to neutralize o.4018 g of KHP. what is the concentration (in molarity) of the KOH solution? (the molar mass of KHP is 204.2 g/moL.)

What mass of KCl would be recovered if 55 mL of 0.20 M KCl were “evaporated to dryness”?
[Hint: this is the same as asking how many grams of KCl are in 55 mL of 0.20 M KCl.]

Calculate the heat change associated with cooling a 400g iron bar from 126C to 40C. ( Cp= .44)

It is believed that humans first arrived in the Western Hemisphere during the
last Ice Age, presumably by traveling over an exposed land bridge between
Siberia and Alaska. Archaeologists have estimated that this occurred about
11,000 yr ago, but some argue that recent discoveries in several sites in North
and South America suggest a much earlier arrival. Analysis of a sample of
charcoal from a fire in one such site gave a 14C decay rate of 0.4 dpm/g of
carbon. What is the approximate age of the sample?

Cu(s)+Ni^ 2+ (aq) Ni(s)+Cu^ 2+ (aq)