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T.mam

Questions (9)

A company buys computers at a cost of 4 million. They expect to replace the computers at the end of 4 years. What annually rate
1. 3 answers
2. 130 views
What is term mole
1. 1 answer
2. 63 views
A sample of a compound of nitrogen and oxygen contains 1,52 g of N and 3,47 of O. The molar mass of the compound is between 90 g
1. 1 answer
2. 137 views
In preparing a standard alkaline solution, a learner dissolve 14,0 g of potassium hydroxide in 1,00 dm^3 of water. In a
1. 5 answers
2. 176 views
70,0cm^3 of a sodium hydroxide solution ( concentration= 0,180 mol•dm^-3 ) reacts completely with 30,0 cm^3 of a sulfuric acid
1. 3 answers
2. 190 views
70,0 cm^3 of a sodium hydroxide solution ( concentration = 0,180 mol•dm^-3 ) reacts completely with 30, 0 cm^3 of a sulfuric
1. 5 answers
2. 187 views
70,0 cm^3 of a sodium hydroxide solution ( concentration= 0,180 mol•dm^-3 ) reacts completely with 30,0 cm^3 of a sulfuric
1. 1 answer
2. 176 views
20,0 g MgCl2 and 20.0 g NaCl are mixed together and dissolved in water to make up 2,00 dm^3 of solution. Calculate the
1. 1 answer
2. 129 views
You want to make up a 0,100 mol.dm^-3 sodium carbonate solution. You have a 200ml volumetric flask and a bottle of sodium
1. 1 answer
2. 137 views

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