General Chemistry Answers

What is the Lcm balanced answer of Pcl5+H2O_h[3PO4+Hcl

A 2-meter copper conductor which has a cross-sectional area of 8 x 10 – 7 m2 has a potential energy difference of 6 volts between its ends. The resistivity of copper is 1.7 x 10 – 8 Ω-m. Find:

a. The resistance of the conductor, and

b. The current passing through it

Two resistances 6 Ω and 3 Ω are connected in parallel. A current of 6 amperes is passing through the combination. Find:

a. The total resistance, and

b. The current through each resistor

Two resistances 4 Ω and 8 Ω are connected in series. A voltage of 24 volts is applied across the combination. Find:

a. The total resistance, and

b. The voltage across each resistor

A 2-meter copper conductor which has a cross-sectional area of 8 x 10 – 7 m2 has a potential energy difference of 6 volts between its ends. The resistivity of copper is 1.7 x 10 – 8 Ω-m. Find tTheresistance of the conductor,

OH2+NO3

Fossil fuels contain sulfur in their compound, which can be oxidized to form sulfur dioxide while burning:Sufur + Oxygen --> Sulfur dioxide(or)S+O2--> SO2SO2 is a harmful and highly reactive gas, which can react with atmospheric water and may cause acid rain.

Suppose a piece of cloth was found to contain a third of its original C-14/C12

 ratio, what is the approximate age of the sample? State any assumptions you

 made during calculation.

1. A chemical engineer uses waste CO2 from a manufacturing process, instead of chlorofuorocarbons, as a “blowing agent” in the production of polystyrene. Find the density (in g/L) of CO2 and the number of moles per liter (a) at STP (0oC and 1 atm) and (b) at room conditions (20oC and 1.00 atm).

A weather balloon is inflated to a volume of 25.6 L at a pressure of 735 mmHg and a temperature of 27.4 ∘C∘C. The balloon rises in the atmosphere to an altitude where the pressure is 375 mmHg and the temperature is -15.9 ∘C. Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude.

V balloon = --- L