The use of thermite for welding produces an

exothermic reaction:

Fe2O3 + 2A12Fe + Alog

Which action would increase the rate of reaction?

An isotope has extra what? neutrons protons electrons

Who proposed the plum pudding model and what does it say about the structure of the atom

3. Explain the following giving examples (a) Saturated solution (b) Pure substance (c) Suspension

Polymerization is most directly responsible in determining which structure of a protein?

The primary forces of attraction between water molecules in h2o (l) are

What is at mass no of potassium

According to the modern atomic theory, are atoms divisible?

Running a mile involves

How many calories are there in a 255 Food Calorie snack bar? a. 1 x 103 b. 2.55 x 105 c. 1.07 x 103 d. 60.9 e. none of the above

What is the greatest amount of ammonia (NH3) in moles that can be made with 4.7 mol N2 and 6.9 mol H2? Which reactant is limiting? How many moles of excess reactant will be left after the reaction?