How many scientific fundamental quantities are given S.I. units?

Which of the given reactions are counted as balanced reactions?

Which of the following may be an incorrect statement?

A piece of iron is 5 inches long. How much would it be in centimeters?

What’s the number of particles in 10 moles of hydrochloric acid?

How many significant figures does 0.057 have?

Water is a/an ___

What is 1 Dalton?