What is the theoretical yield of a reaction if the percent yield 92.4 % and product recovered is 89.3 g?

The internal energy of a system __________.

A sample has a molar mass of 62 g/mol. Identify the sample from the following possibilities.

The food calorie content of a 12 fluid ounce Coca-Cola is 140. Calories. What is its energy content in kilojoules? (1 calorie = 4.184 J)

The specific heat capacity of stainless steel 0.505 J/gK. What is the heat capacity of a 45.0 g stainless steel spoon?

What precipitate is formed when lead(II) nitrate is mixed with ammonium sulfate?

A solution of potassium hydroxide is standardized against potassium hydrogen phthalate (KHC8H4O4). A sample of 0.5544 g of potassium hydrogen phthalate requires 30.88 mL of potassium hydroxide solution to reach a phenolphthalein endpoint. What is the molarity of the potassium hydroxide solution?

The ΔE of a system that releases 12.4 J of heat and does 4.2 J of work on the surroundings is __________ J

What is the net ionic equation for a reaction between a strong acid and a strong base?

Consider 100 g blocks of aluminum (specific heat capacity: 0.897 J/g°C) and iron (specific heat capacity: 0.449 J/g°C). Both blocks are placed on a hotplate such that 1000 J of energy is transferred to each block. What happens to their temperatures?