you go out to dinner and the bill comes to $35.51. how much should you tip if you want the tip to be 20% of the bill.

Consider the chemical equation in equilibrium. CH4 (g) + H2O (g) CO (g) + 3H2 (g) What will happen to the equilibrium of this reaction if the pressure is increased? A. The equilibrium will shift to the left to favor the reverse reaction. B.

You mix 145 grams of water with 200 grams of ethanol to make a solution. What is the solute and what is the solvent?

How are exothermic and endothermic reactions linked in the process of refining metal ore?

Determine the value for the following reaction. N2 (g) + 3H2 (g) → 2NH3 (g) + 22,000 cal ΔH =

What are the three components of the fire triangle?

Look at the reaction below. Upper H subscript 2 upper S upper O subscript 4 (a q) plus upper Upper M g (s) right arrow Uper M g upper S upper O subscript 4 (a q) plus upper H subscript 2 (g). Which substance is the acid in the reaction?

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

Hardness of metals can be decreased by: (a) adding interstitial alloying elements (b) making glassy metals through extremely high cooling rates (c) annealing using slow cooling from high temperatures (d) cold-working or deforming at low temperatures

What happens to the reactivity of metals from left to right across the periodic table?

Does my body get all its energy from the sun?