Other Chemistry Answers

8) C6H14 + O2 à CO2 + H2O ​​​Mass of C6H14: 5.0 g
Experimental Mass of O2: 16.38g​​Experimental Yield of CO2: 14.96g​​Experiment Yield of H2O: 6.58g

9) Fe(OH)2 à FeO + H2O ​​​Mass of Fe(OH)2: 125.0g
Experimental Yield of FeO: 119.73g​​Experiment Yield of H2O: 28.93g

7) NaI + Br2 à NaBr + I2​​​Mass of NaI: 10.0g​
Experimental Mass of Br2: 4.52g​​Experimental Yield of NaBr:​6.14g ​​Experiment Yield of I2: 6.93g

6) AgNO3 + K3PO4  Ag3PO4+ KNO3 Mass of AgNO3: 25.0g
Experimental Mass of K3PO4: 9.53g Experimental Yield of Ag3PO4: 18.62g Experiment Yield of KNO3: 13.24g

I need help on density

A sample of iron has the same dimensions of 2.0cm X 3.0cm X 2.0cm. If the mass of this recatsngular shaped object is 94.0g what is the density of iron?

How many moles of isooctane must be burned to produce 100 kJ of heat under standard state conditions? Show all your work.

Ethyl alcohol has a latent heat of vaporization of 850 J/g. Water has a latent heat of vaporization of 2260 J/g. Container A contains 1.0 kg of ethyl alcohol. Container B contains 1.0 kg of water. Both liquids are brought to a boil. If the same amount of heat is continuously added to each container, which liquid will boil away first?

The Keq for the equilibrium below is 7.52*10^-2 at 480.0 C.
2Cl2 (g) + 2 H2O (g) <--> 4HCl (g) + O2 (g)

What is the value of Keq at this temperature for the following reaction?
2HCL (g) + 1/2 O2 (g) <--> Cl2 (g) + H2O (g)


A) 5.66 * 10 ^-3
B) 13.3
C) -0.0376
D) 0.274
E) 3.65

How do the quantum numbers of the shells, subshells, and orbitals of an atom differ?

Aspirin manufactured since 1899 is the most well-known pain killer of our days. The chemical name of the active pain-killing ingredient in aspirin is acetylsalicylic acid.

Formula of aspirin: C9H8O4 (Relative Atomic masses: C = 12, H = 1, O =16) Solubility of acetylsalicylic acid: 1 g / 100 g water at 37oC

a. Calculate in g the mass of one mole of aspirin

The elements to the right of the zigzag line on the periodic table are called

Select one:
a. nonmetals
b. conductors
c. metals
d. metalloids