A solution containing 0.750g of an unknown substance in 30.0g of cyclohexane was found to freeze at 3.1 C. What is the molar mass of the unknown substance?

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

Which of the following is not true about the atomic model of substances?

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied