Answer:
Step-by-step explanation:
hello :
the center is : (-7 , 9)
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
Six million and seventy two hundred. 6.0072 x 10*
*=6
Answer:
is it subtraction or addition?
Step-by-step explanation:
