Answer: 0.70g
The half-life of iron-53 would be 8.51 minutes. So, in 25.53 minutes would be equal to: 25.53 min/ (8.51 minutes/ half-life)= 3 half-life.
Every half-life will reduce the original weight into half. So, the final weight would be:
final weight = original weight * 1/2 ^(time)
final weight = 5.6g * (1/2)^(3 half-life)
final weight = 5.6g * 1/8= 0.7g
Answer:
a) 65.74 = 4 significant figures
b) 60.009 = 5 significant figures
c) 66_ = 2 significant figures
d) 65.750 = 5 significant figures
Explanation:
Significant figures or digits is defined as the total number of digits in a number that have meaning and contribute to the precision of the given number.
a) 65.74 = 4 significant figures, all the non-zero figures are considered significant.
b) 60.009 = 5 significant figures, zeros present between non-zero figures are significant.
c) 66_ = 2 significant figures, all the non-zero figures are considered significant.
d) 65.750 = 5 significant figures, all the non-zero figures and the trailing zero after the decimal are significant.
Well protons and neutrons are in the center in the atom, while electrons travel in orbitals outside of the nucleus. The electric charge for protons, neutrons, and electrons are 1, 0, and -1 respectively. the mass for protons and neutrons are 1 amu (atomic mass unit) while the electron is 1/2000 amu.<span>
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The answer to this question is 850 kilometers