Answer:
4 km
Step-by-step explanation:
1000m:3m = 4000m:12m
Answer:
A or C
Step by Step Explanation:
Since x=8/3 is a vertical line,the slope is undefined,
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