In order to know the number of moles from the given mass, the conversion factor to be used is the average atomic mass of Calcium which is equal to 40.08 g/mol. But first, let's convert mass from grams to kilograms knowing that there are 1,000 g in every 1 kg.
Mass = 351 kg * 1,000g/1 kg = 351,000 grams
Number of moles = 351,000 g * 1 mol/40.08 g = 8,757.5 moles Calcium
Answer:
the answer is 18 atoms [your welcome]
Since the volume is directly proportional to temperature, then the answer to your question is pretty obvious. If the volume of the gas increases, then it is very likely that the cause of it was due to an increase in the temperature.
I hope I was able to help you with your question. Let me know if you have further questionings. :)
Answer:
600 mL
Explanation:
molarity 1 * volume 1 = molarity 2 * volume 2. So this means 12 * 250 = 3000 and divide that by 5 to get 600 mL.
A) an acid because it turns the paper blue