Chemistry Answers

1. Metallic silver can be prepared by the reaction of hydrogen gas on silver oxide.
   
2. You react 16.7 g of Ag2O with 3.20 g H2?
3. What is the limiting reagent?
4. How many grams of Ag are produced?
5. Arcylonitrile

zinc+lead(II)nitrate yield zinc nitrate +lead

Calculate

The number of moles

The amount in grammes of HCL that must be added to 500cm^3

Of water to give a solution with pH 3

From 2010-2022, what are the developments of analytical chemistry. Discuss in chronological order.

the 5 g of zinc powder used is an excess. Calculate the mass of zinc that reacts exactly with 50.0cm3 of 1.00 mol dm

Bingo little found a bottle in his lab without a label. A note attached to the bottle said that the contents of the bottle was either an alcohol or an ether(no on knew which). Bingo decided to run a test to determine the compounds empirical formula. He found that when a 6.00g sample was burned in oxygen gas the only products were 13.2g of carbon dioxide and 7.2g of water. Find the empirical formula

Use the balanced chemical equation for the neutralization of hydrochloric acid with calcium hydroxide to determine the concentration of the hydroxide ion, in moles per litre. (Hint: why does one not need to know the volume of one drop?) From [OH-], determine [Ca2+] in moles per litre.

Illustrate using a concept map the process on how to compute the molecular formula of a certain substance, given its percentage composition

what is the function of phosphtidylserine,phosphotidylethanolamine,phosphtidylinsitol.

The reaction of benzyl alcohol (10.81 g, 0.10 mol , FW 108.1 g/mol) with p-toluenesulfonyl chloride (21.9 g, 0.114 mol , FW = 190.65) in toluene (500 g) and triethylamine (15 g, FW = 101) produces the ester benzyl p-methylbenzenesulfonate (FW = 262.29), isolated in 90% yield (0.09 mol, 23.6 g) and hydrochloric acid (3.28 g, FW 36.45). Calculate the mass efficiency.