Metals are extracted from their ores.

Many copper ores contain only 2% of copper compounds.

Copper is now extracted from ores containing a low percentage of copper compounds.

Suggest two reasons why.

Hydrogen Sulfide decomposes according to the following reaction, for which Kc=9.3 x 10^-8 at 400 degrees Celsius. 2 H2S (g) ⇄ 2 H2 (g) + S2 (g) If 0.47 moles of H2S are placed in a 3.0 L container, and the system is allowed to reach equilibrium.

What are two types of nutrients used by organisms for energy and as building materials

TAC CAT CAT CAT TAG what type of mutations happen?

Which compound has the bigger lattice energy? K Br CaBr2 o O Na, NaF Rb20 0 Rb, S 0

How many atoms are in hydrogen nitrate?

A solution of H2SO4 with a molal concentration of 5.25m has a density of 1.266 g/ml. what is the molar concentration of this solution?

An animal that backs on a warm rock during the morning hours but retreats to the shade of the rocks during the middle of the day is mostly likely a (n) A. ectotherm B. endotherm C. vertebrate D. chordate

How much water vapor can a cubic meter of air hold at 25 degrees celcius

When 0.50 L of a 12 M solution is diluted to 1.0 L, what is the resulting molarity?

A 52.9g sample of brass, which has a specific heat capacity of 0.375·J·g-1°C-1, is put into a calorimeter (see sketch at right) that contains 100.0g of water. The temperature of the water starts off at 15.0°C.