What is the number of moles in a sample of gas that has a volume of 3.5 L, a pressure of 200 kPa, and a temperature of 300 K?

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Find the mass in grams of 1.37x1020 particles of h3po4