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what weight of NaCl is needed to prepare 200mls of a 250ppm Na solution?
1. 2 answers
2. 534 views
a compound contains 5.2% by mass Nitrogen. It also contains carbon, hydrogen and oxygen. Combustion of 0.085g of the compound
1. 2 answers
2. 2,067 views
balance:CaCl2 + AgNO3 → AgCl + Ca(NO3)2
1. 2 answers
2. 1,276 views
which of the following is not spontaneous process at 25 degrees celsius and 1 atm pressure?ice melting iron rusting salt
1. 1 answer
2. 1,167 views
SUFFIXES:-dairy=dairies -ability=abilities -cry=cries -journey=journies -liberty=liberties -dictionary=dictionaries
1. 1 answer
2. 429 views
One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and
1. 1 answer
2. 1,056 views
what is the difference between water on the surfaace of crystals and hydrate water itself?
1. 1 answer
2. 479 views