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Chemistry
a quantity of chlorine gas occupies a volume of 50L at 22c and 721 kPa. howmany moles of chlorine gas are present?
Chemistry
What quantity of 0.25 M HNO3 can be neutralized by 0.10 liters of 0.50 M NaOH?
Chemistry
Using the equation N2 + 3H2 ==> 2NH3 , determine how many moles of ammonia are produced when 30 moles of hydrogen are comsumed
Chemistry
State the energy that takes place as a person falls from 20m to 25m below platform if he's mass is 75kg.
Chemistry
How many moles of nitrogen gas are in 78.4L at STP?
Chemistry
If the concentration of a solution of NaOH is 4g/dm3 ,then what mass of NaOH is contained in 250 cm3 of this solution ? [1 dm3 = 1000 cm3 ]?
Chemistry
What is the mass of sodium nitrate (85.00 g/mol) that releases 2.55 L of Oxygen has at STP
Chemistry
Dear Sir,
I have a question about what are the applications of double displacement reaction in paint & pharmaceutical industry?? 3 or 4 points?
I have a question about what are the applications of double displacement reaction in paint & pharmaceutical industry?? 3 or 4 points?
Chemistry
Dear sir
in determination H2S in crud oil we used Borax solution 30% to extract H2S from crud oil to borax then acidify with HCl then titration with iodine and thiosulfate sodium.
i want to know why i use Borax ?because i can use NaOH or another base that cheaper of borax
Best regrds
TONE
in determination H2S in crud oil we used Borax solution 30% to extract H2S from crud oil to borax then acidify with HCl then titration with iodine and thiosulfate sodium.
i want to know why i use Borax ?because i can use NaOH or another base that cheaper of borax
Best regrds
TONE
Chemistry
why is it that when a gas and liquid (of the same substance and amount) are compressed , the change in volume is much smaller in the liquide than in the gas
