Answer:
Amount of Niobium-91 initially
= 300/91 =3.2967mol
2040 years = 3 ×680 = 3 half-lives
therefore, amount left = 0.4121mol
mass of Niobium-91 remaining = 0.4121 ×91 =37.5g
Please give brainliest
It’s y=3x-3 that is where the line passes thru
It would be answer 4 because 14.85 divided by .05 is 297
Since both 3x and 6x have the variable x in it, we can just go ahead and add 3 and 6.
3x+6x=9x
The volume of a rectangular prism is length times width times height, the answer is 40 inches cubed for Mindys prism and 40 centimeters cubed for MAtts prism.
