How much will be left after 231 years? Compute the answer to three significant digits.
The radioactive element americium-241 has a half-life of 432 years. Suppose we start with a 20-g mass of americium-241.
A) 13.8 g B) 14.9 g C) 16.1 g D) 16.7 g
A) 13.8 g
Mathematics
You might also like to view...
Use =, <, or > to write a true statement.
A. = B. < C. >
Mathematics
Find the measures of two angles, one positive and one negative, that are coterminal with the given angle.192°
A. 552°, -168° B. 462°, -78° C. 552°, -258° D. 372°, -168°
Mathematics
Solve the equation.x2 + 5x = 84
A. -12, 1 B. 12, 7 C. -12, 7 D. 12, -7
Mathematics
Find the square root and simplify. Round to the nearest thousandth if necessary.
A. 10.630 B. 10.724 C. 10.645 D. 10.617
Mathematics