5 L Let's call the number of liters we'll need of the 10% solution n. Adding 10 L of the 4% solution, we end up with n+10 L of the desired 6% solution. Using those expressions, let's take a look at …

The constant term in the quadratic is supposed to be negative. "I"_2(g) rightleftharpoons 2"HI"(g) K = (2x)^2/(0.0183 - x) = 2.04 xx 10^(-3) Yes, the coefficient of 2 goes into the change in ["HI"]. …

The boiling point of that solution is 84^@"C". The equation for boiling point elevation looks like this DeltaT_"b" = i * K_b * b, where DeltaT_"b" - the poiling point elevation; i - the van't Hoff factor; …

Apr 20, 2018 · A car uses on average 27 miles per gallon if gas costs $4.04 per gallon, which of the following choices is closest to how much the gas would cost for the car to travel 2,727 …

Jun 27, 2016 · Either 87.55yrs or an amazing 750 years The question does not state whether is is simple or compound interest! This will affect the time hugely. COMPOUND INTEREST is more …

12"mol"/"L" 0.081 "L" = 81"mL" 1. Let's look at the problem: the "HCl" in solution is 38% by mass. If we assume a 100 "g" sample, then then the mass of "HCl" in solution is 38"g". The number …

E(x) = 1.52+.5y sigma(x) =sqrt(3.79136 +.125y^2) the expected value of x in the discrete case is E(x) = sum p(x)x but this is with sum p(x) = 1 the distribution given here does not sum to 1 so I …

A circle has a center that falls on the line #y = 6/7x +7 # and passes through # ( 7 ,8 )# and # (3 ,9 )#. What is the equation of the circle? GeometryCirclesEquation of a Circle

This is a long question. It has a long answer. I must point out that all the substances in the equation are soluble in water, so there is actually No Reaction. If there were a reaction, this is …

Some very hot rocks have a temperature of #280 ^o C# and a specific heat of #40 J/ (Kg*K)#. The rocks are bathed in #70 L# of boiling water. If the heat of the rocks completely vaporizes the …