Chemistry Answers

Calculate the reaction entropy (S°rxn) for the following reaction: NaCl + AgNO₃ >

AgCl + NaNO₃

Calculate the reaction entropy (S°rxn) for the following reaction: Si + 2 Cl₂ > SiCI₄

there are some salt available in a chemistry lab some of them are insoluble or less soluble in water among those salt is PB hole toys what is the concentration of PV hole toys in gram per litre dissolve in water if the KSP for this compound is 4.1 into 10 to the power minus 15 show the step-by-step solution + process

Using the standard reduction potentials, calculate the standard emf for each of the following

reactions: a. 2Al 3+ + 3Cd ⟶ 2Al + 3Cd 2+

b. Cr + 2Cr 3+⟶3Cr 2+

c. H2 + I2⟶ 2H + + 2I

One international nautical mile is defined as exactly 6076.1155ft and a speed of 1 knot is defined as one international nautical mile per hour. What is the speed in meters per second of a boat traveling at a speed of 14 knots?

Decomposition of mercuric oxide HgO to mercury Hg and Oxygen O2 gas, requires 87.1 Kj of heat

Rock salt is a mixture of salt (sodium chloride) and sand. Describe how you would separate rock salt to obtain salt crystals and pure dry sand. 

What volume will 200 ml of gas at 20 o C and 800 mm Hg occupy at STP?

A sodium atom has a mass of 22.99 u. Use Avogadro’s

constant and the conversion factor 1.661 3 10–24 g/u to

calculate the mass of 1.00 mol of sodium atoms.

A 2.9 g sample of a pure compound contains 0.050 mol of

the compound. Use this data to calculate the molar mass of

the compound.