Which of the following is the correct scientific notation for 0.000451 g?

4.5 x 10-3

4.5 x 10-5

4.51 x 10-4

45.1 x 10-4

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?