Why is water considered a pure substance, while milk is not?

In an internal combustion engine, platinum speeds up the oxidation of carbon monoxide to carbon dioxide. Platinum is needed for the reaction, but is not used up in the reaction.

To calculate the number of atoms present in 2.0 mol of an element you would:

What is a property that has both a magnitude and a direction?

Look at this reaction: 3NO (g) ⇆ N2O (g) + NO2 (g) Keq = 1.8*10^ (18) (at 298 K), △H° = - 155 kJ/mol. Which of the following statements about this reaction is not correct? a) ΔS < 0 because there is more order in the products than in the reactants.

Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3 (is). The equation for the reaction is 2 KClO3 ⟶ 2 KCl + 3 O 2 Calculate how many grams of O 2 (g) can be produced from heating 66.1 g KClO 3 (s).

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .

What fuel is produced by the electrolysis of water? chlorine gas hydrogen gas natural gas oxygen gas

Model describe how you would show j. j. thomson's model of the atom using small beads and clay