Search
A sample of He gas contains 2.5 moles of He. What volume does this sample occupy at STP?
A sample of O2 was collected over water at 23˚C and 760 torr. What is the partial pressure O2 at the given temperature and pressure? The vapor pressure of water at 23˚C is 21.2 torr.
How many grams of N2 will be contained in a 3.0 L flask at STP?
Find the standard Gibbs energy charge for reaction
A) CaCO3(s) → CaO(s) + CO2(g)
The ΔGf° values for the three components of this reaction system are CaCO3(s): –1128 kJ mol–1; CaO(s): –603.5 kJ/mol; CO2(g): –137.2 kJ/mol.
- Phosphorus (P₄) is prepared in an electric furnace according to the equation
2Ca₃(PO₄)₂ + 6SiO₂ + 10C —› 6CaSiO₃ + 10CO + P₄
a. How many moles of Ca₃(PO₄)₂ are needed to yield 15 moles of P₄?
b. How many moles of C are required?
c. How many grams of P₄ are formed?
d. Calculate the mass in grams of CaSiO₃ produced.
e. What mass (in grams) of CO are also formed?
1. Aspirin has the molecular formula C9H8O4. a. What is the % C in aspirin by mass in aspirin? B. What is the % O in aspirin by mass in aspirin?
Assign melting points to the two structures of 1,4 dibromocyclohexane
Discuss free radical reaction of mechanism in methane chlorination as an example of substitution reactions of alkanes
Discuss the oxidation reaction of methane
Define energy of activation in relation to methane
