The potential of a corrosion cell composed of nickel (anode) and a hydrogen electrode (cathode) immersed in a 0.3 M NiCl2 solution at a temperature of 70 ℃ is measured to be +0.220 V. What is the pH of the solution?

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Geothermal energy for industrial use is available almost anywhere. a.true b.false

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.