1.It has been proposed to mix a 1500 L bath containing 5% by volume of H2SO4 with a 1500 L bath containing 5% by weight of NaOH. The Specific gravity of the acid added is 1.841 and its purity is 96%. The base added is 100% pure. Estimate the final pH and the final TDS (in mg/L) of the mixture of the two baths
2.A 12-lb collar is attached to a spring anchored at point C and can slide on a friction-less rod forming a 30 degree angle with the vertical. The spring has constant k and is unstretched when the collar is at A. Knowing that the collar is releasted from rest at A, develop an equation to determine the velocity of the collar at point B for any given value of k (k-range is 0.1-2.0 lb/in)