Chemistry Answers

25.0 ml of 0.350 M NaOH are added to 45.0ml of 0.125m Copper (II) Sulfate. How many grams of copper (II) Hydroxide will precipitate?

What is ion

Common laboratory preparation of oxygen gas is the thermal decomposition of potassium chlorate (KClO3). Assuming complete decomposition, calculate the number of grams of O2 gas that can be obtained from 46.0 g of KClO3. (The products are KCl and O2)

state two commercial uses of oxygen

A point charge has a charge of 2.50 X 10-11 C. At what distance from the point

charge is the electric potential a) 90.0 V? b) 30.0 V? Take the potential to be

zero at an infinite distance from the charge.

Note: Show your free body diagram (FBD) and solutions accurately,

systematically and orderly with the standard unit, and express it into

prefix word if possible.

A point charge has a charge of 2.50 X 10-11 C. At what distance from the point

charge is the electric potential a) 90.0 V? b) 30.0 V? Take the potential to be

zero at an infinite distance from the charge.

Note: Show your free body diagram (FBD) and solutions accurately,

systematically and orderly with the standard unit, and express it into

prefix word if possible.

How many grams of silver chromate will form when 120 mL of 0.500 M silver nitrate are added to potassium chromate?

2 AgNO3(aq)   +   K2CrO4(aq)   ?   Ag2CrO4(s)   +   2 KNO3(aq)

How many grams of FeCl₃ are present in 15.00 mL of the solution? (Molar mass of FeCl₃ = 162.2 g/mol)

which of the IMF correctly identifies all the interactions that might affect the properties of BrI

The combustion of heptane C7H16 in a constant volume calorimeter

gave the value of Qv = -4793 KJ at 25̊C. What will be their enthalpy

change of the process at 25̊C? [C7H16 (l) + 11O2 (g) = 7CO2 (g) +

8H2O (l).]