Magnesium has three known isotopes mg-24 with a percent abundance of 79.0%,mg-25 with a percent abundance of 11.0% and mg26 with a percent abundance of 11.0% what is the average mass

Why does a red shoe appear red in daylight

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness