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Stephany

Questions (5)

Using dots and cross diagram show the compound phosphonium ion PH4 +(H=1,P=15)
1. 1 answer
2. 76 views
Calculate the number of hydrogen ions in 5cm3 of 0.5 molar phosphoric acid.(L=6.0×10²³)
1. 1 answer
2. 48 views
Calculate the molar heat of neutralization.(c=4.2kJK-1 density of solution =1g/cm3
1. 1 answer
2. 86 views
30cm3 of ethane were mixed with 100cm3of oxygen and the mixture was sparked to complete reaction. If all the volume were
1. 1 answer
2. 174 views
A train slows down from 108km/hr with a uniform retardation of 5m/s. How long will it take to reach 18km/hr and what is the
1. 1 answer
2. 186 views

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