A capillary tube of internal diameter 0.21mm is dipped intoba liquid whose density is 0.79g cm^-3. The liquid rises in thus capillary to a height of 6.30cm calculate the surface tension of the liquid?

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear