Answer:
9^8
Step-by-step explanation:
9²•9⁶ = 9^(2+6) = 9^8
I think A because 560×3=1,680
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
The answer is 3. You divide the numbers in the bigger triangle by the numbers on the smaller one to find the scale factor