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 correct answer is C. <span>Similar polygons are never congruent.</span>
Answer:
y=1/3x+4
Step-by-step explanation:
It should be correct as the gradient = 1/3
and the y-intercept = C
= +4
328 bolts can be produced in 32 minutes
I’m not sure maybe if there was an imagine I’d be able to answer this question.
