Wednesday
December 24, 2014

Homework Help: maths PLEASE HELP

Posted by jessie on Tuesday, March 9, 2010 at 11:29am.

A mixture contains two chemicals, A and B, with masses mA and mB. The total mass of the mixture, m, remains constant. B is converted into A at a rate that
is inversely proportional to the mass of A and directly proportional to the square of the mass of B in the mixture at any time t.

Form a differential equation and
find a general expression relating the mass of A to the time t.

ive got dma/dt = mb^2/ma

is this right and if so is the next bit

mb = m - ma
so dma/dt = (m-ma)^2/ma

then i get stuck

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

maths - A mixture contains two chemicals, A and B, with masses mA and mB. The ...
chemistry - A 100 L flask contains a mixture of methane and argon gasses at 25 ...
chem 151 - You need to dissolve CaCl2 in water to make a mixture that is 31.5% ...
Chemistry - You need to dissolve CaCl2 in water to make a mixture that is 31.5% ...
algebra - In a mixture of concrete, there are four lb of cement mix for each ...
Chemistry (URGENT) - A gas mixture with a total pressure of 770 contains each of...
chemistry - A mixture of 16 g of salt and 47 g of baking soda is poured into 296...
Science - A small bowl contains a mixture of toothpicks and glass marbles.The ...
chemistry - A gaseous mixture of and contains 35.8 nitrogen by mass. What is the...
chemistry - A gaseous mixture of O2 and N2 contains 35.8% nitrogen by mass. What...

Search
Members