Inorganic Chemistry Answers

differentiate between (answer as per 9th class ICSE text book):
1. burning - respiration
2. oxidation - reduction
3. drying agent - dehydrating agent

give the sources and harmful effects on human beings , methods of control of the following:
1. global warming 2. acid rain 3.air pollution due to carbondioxide and sulphurdioxide
4.water pollution

define the following as per 9th class icse text book:
1. distillation
2. water pollution
3. solution
4. efflorescence
5. hygroscopic substances
6. solubility
7. burning
8.saturated solution
9.neutralisation reaction
10.pollution
11.thermal dissociation
12.hydrolysis

A sample of 18K gold contains the following by mass: 18.0 grams gold. 3.0 grams silver, and 3.0 grams copper. What is the percentage of gold?

what is the empirical formula for compunds formed with calcium and oxygen?

I have had this question in my homework, and honestly I got stuck in these questions. I managed to convert 5.3g of Na2CO3 into moles, but then I got stuck and do not know what to do next to solve the question.

If anyone knows how to work this out, help from anyone is greatly appreciated (:

The addition of 5.3g of anhydrous sodium carbonate to 2.00dm³ of an aqueous solution of a strong acid exactly neutralises the acid

2H+ (aq) + (CO3)2-(aq) ==> CO2 (g) + H2O (l)

a. Calculate the pH of the original solution

b. In a second experiment, 5.3g of NaOH were added, instead of sodium carbonate, to 2.00dm³ of the original solution. Calculate the pH of the resulting solution.

Thanks! :)

calculate % ionic character of K---Cl bond in KCL. electro negativity of K and CL are 0.8, and 3.0 respectively

In the 2011-2012 academic year, Dr. Harmon used approximately 515 kg of methane in his home for heating, hot water, and stove/oven use. How many 75-gallon barrels of waste corn oil should Dr. Harmon collect to produce his own methane for 1 entire year assuming he uses the exact same amount of methane as in the 2011-2012 academic year? The density of oleic and linoleic acids are very similar, you may assume both are 0.90 g/cm3. Additionally, you may assume the percent yield of methane production from corn oil pyrolysis is 100%

HC18H31O2+ O2(g) àCH4(g) + CO2(g) + H2O(g) + H2(g)

HC18H33O2 + O2(g) àCH4(g) + CO2(g) + H2O(g) + H2(g)

To make this problem easier, you may assume 65% of the methane produced comes from linoleic acid and 35% of the methane produced comes from oleic acid.

what are odd electron molecules?

Lower oxides of transition metals are basic while higher oxides are acidic.why?

Calculate the volume of ammonia gas formed by the reaction between 7 grams of nitrogen gas and excess nitrogen gas at r.t.p.