The answer would be 6.023 x 10E23
E= exponent
Answer:
pure hydrogen is a pure substance even though it consists of many different types of molecules. what makes it pure substance is that it is free from contamination.
Evaporation is a phase transition from the liquid phase to the gas phase that occurs at temperatures below the boiling point at a given pressure.
hope this helps :)
Answer:
Yes because every plant around you keeps giving new oxygen.
