By how much would profit increase if:

The name for NH 4Br is

Classlify the following reaction: PbO 2(s) –> Pb(s) + O 2(g)

3.81 moles of oxygen gas molecules contain how many oxygen atoms?

How many atoms are there in 86.5 g of nickel?

A 5.10-g sample of iron is heated from 36.0 oC to 75.0 oC. The amount of energy required is 89.53 J. The specific heat capacity of this sample of iron is

True or false? The Cl- , S2- , and K+ ions have the same electron configuration.

Which pair of properties indicates the Disorder and Heat of a system, respectively?

A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). Calculate the (empirical) formula of this compound.

According to the following exothermic reaction, the enthalpy change when 11.2 g of carbon is reacted with excess oxygen is _________ kJ .  (enter number precise to 3 sig figs)                       2C(s) + 2O2(g) 2CO2(g)              ∆H = –788 kJ/mol answer format: NUMBER ONLY: write a numerical answer to 3 sig figs.  NO UNIT: Do not include a unit.   [BLANK-1]