Please help!! How many atoms of carbon are present in 34.5 g of caffeine, C3H10N4O2? 8.57X10^23
O 2.68X10^25
O 4.83X10^23
01.08X10^24

How would you reduce the volume of gas

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)