A sample of sucrose was burned in a calorimeter, and 41,600 joules of heat energy were released. Which statement is true about the water in the calorimeter? It released 20,800 joules.
It released 41,600 joules.
It absorbed 20,800 joules.
It absorbed 41,600 joules.

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

What is the percent by mass of oxygen in fe2o3

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.