How many moles are in 1.48×1024 atoms of LiOH
Answers
Answer:
1) What is the correct value for Avogadro's number?
6.022 x 10^23
2) Which of the following statements about the mole is FALSE?
A) The size of a mole of atoms has a reasonable mass.
B) A mole of an element corresponds to one Avogadro number of atoms.
C) One mole of an element has a mass equal to its atomic mass expressed in grams.
D) One mole of water contains 1/2 mole of oxygen atoms.
E) none of the above
D) One mole of water contains 1/2 mole of oxygen atoms.
3) How many atoms are in 5.80 moles of He?
A) 6.02 x 10^23
B) 1.03 x 10^23
C) 4.00
D) 3.49 x 10^24
E) none of the above
D) 3.49 x 10^24
4) How many atoms are in 1.50 moles of fluorine gas?
A) 6.022 x 10^23
181
B) 9.03 x 10^23
C) 18.98
D) 1.81 x 10^24
E) none of the above
D) 1.81 x 10^24
5) How many moles of Cu are in 1.48 x 10^25 Cu atoms?
A) 0.0408
B) 24.6
C) 1.54 x 10^25
D) 6.022 x 10^23
E) none of the above
B) 24.6