Tuesday
July 29, 2014

Posts by RAYNOLD


Total # Posts: 4

Chemistry
An element has a body centred cubic structure with edge cell of 288 pm .The density of the element is 7.2 g/cm3.How many atoms are present in 208g of the element.

science
Two balls of masses 5 kg and 15kg are separated by a fixed distance of 0.8m. find the position of the centre of mass of system

science
explain the significance of the negative sign in gravitational potential energy?

science(chemistry)
complete the following reaction: 1.CH3-CH-_CH2+H2O 2.CH2-CH2+Br2

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