maths PLEASE HELP

posted by .

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

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. maths

    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 …
  2. physics

    If two different masses have the same kinetic energy, their momenta are: 1. inversely proportional to their masses 2. inversely proportional to the square roots of their masses 3. proportional to the squares of their masses 4. proportional …
  3. Physics

    If two different masses have the same kinetic energy, their momenta are: a. proportional to the squares of their masses b. proportional to their masses c. proportional to the square roots of their masses d. inversely proportional to …
  4. chem 151

    You need to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 419.0 g, what masses of CaCl2 and water should be used?
  5. Chemistry

    You need to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 254.6 g, what masses of CaCl2 and water should be used?
  6. Chemistry

    A mixture of C3H8 and C2H2 has a mass of 2.6g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
  7. Chemistry

    A mixture of C3H8 and C2H2 has a mass of 2.6g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
  8. chemistry

    A 100 L flask contains a mixture of methane and argon gasses at 25 degree C . The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650 . calculate the total kinetic energy of gaseous mixture
  9. Chemistry

    A mixture of C3H8 and C2H2 has a mass of 2.5 g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.5 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
  10. Chemistry

    I am doing an elementary experiment regarding separating mixtures. My mixture contained NaCl, SiO2, and CaCO3. In the beginning, I calculated the mass of my mixture (all components together). As I completed the experiment, some of …

More Similar Questions