MeGaTrOn

calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.3g in enough water to form 250ml of solution

PQ and RS are two sparingly soluble salts.Their solubility products are equal to 4.0×10^(-18). Which salt is more soluble

Find the normal to the curve x=tt+1x=tt+1 and y=tt−1y=tt−1 at the point T where t = 2. I tried converting this into one equation (y=x(t+1)t−1y=x(t+1)t−1) but don't see how to get the answer which says: dydx=−(t+1)2(t−1)2dydx=−(t+1)2(t−1)2 and that T=(23,2...

y + ((4x^2)/(3-x)) ^3 y ' = ? Product Rule didn't work here ...I think the Quotient rule but the cube on end has me stumped

Compound Interest: You deposit $1000 in an account with an annual interest rate of r (in decimal form) compounded monthly. At the end of 5 years, the balance is A = 1000(1 + (r/12)) ^60

For oxidation of iron 4Fe+3O2=2Fe2O3 the entropy change is -549.45JK^-1mol^-1 at 298K. Though it has negative entropy change in the reaction is spotaneous.why? (Delta r H theta ∆rH°=-1648×10^3 J ml^-1. Is it because ∆G is negative????

Not given

Find the normal to the curve X=t÷[t+1] and Y=t÷[t-1]at point T where t=2. I tried converting this into one equation Y=x(t+1)÷(t-1) but don't see how to get the answer which says: dy÷dx=-(t+1)^2÷(t-1)^2 and that T=(2÷3,2), 3x−27y+52=0 Is this ok Those prob...