7. which statement is correct?
a. 4g of CH4 is equal to 4 moles of CH4
B. 4g of CH4 is equal to 1 moles of CH4
C. 4g of CH4 is equal to 16 moles of CH4
D.4g of CH4 is equal to 64 moles of CH4
8. what is the mass of one-half mole of SO2?
A. 8g B. 12g C. 24g D.32g
9. how many moles are contained in 34g of NH3?
A. 1 mol B. 2 mol C. 17 mol D.34
10. what is the mass of 4.39 mol Na?
A. 191g B. 27.3g C.55.2g D.101g​