Other Chemistry Answers

Suppose 9.00 mol of hydrogen reacted with sufficient nitrogen. How many moles of ammonia would be produced?

Calculate the mass of potassium trioxocarbonate(iv) in 250cm3 of 0.100moldm-3 solution.(K2CO3=138gmol-1)

In determining the reaction velocity for the reaction A + 2B ⇌AB2

Why must the concentration of B molecules be squared?

Which set of coefficients will balance this chemical equation?

 __C₂H₄(g) + __O₂(g) → 2CO₂(g) + 2H₂O(g)

A sample of nickel metal with a mass of 82.3 grams at 70.0 °C is dropped into 100.0 grams of water at 20.0 °C. If the specific heat of the nickel metal is 0.444 J/g°C and the specific heat of the water is 4.20 J/g°C, then what was the final temperature of the system?

How many milliliters (ml) of 1 M MgSO4 must be added to 50 ml of a 0.1 M MgSO4 solution to produce 1000 ml with a final MgSO4 concentration = 0.75 M? How much water?

How much titanium in grams is required to release 538.13 kJ of heat?

Ti + 2 B -> TiB₂  

△ H

 = 316 kJ/mol

A 12.40 gram sample is heated to an initial temperature of 50 ^oC. The sample is then placed in a calorimeter containing 6 grams of water starting at 24 ^oC. If the final temperature is 35 ^oC what is the specific heat of the sample?

s_H2O = 4.18

How much energy in kJ is released when 11.10 g of aluminum react with an excess of copper oxide?

3 CuO + 2 Al -> 3 Cu + Al₂O₃  

△ H

 = 1190 kJ/mol

How much nickel in grams is required to release 215 kJ of heat?

5 Ni + 2 P -> Ni₅P₂  

△ H

 = 436 kJ/mol