Wut is answer pls???

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98