Explanation:
- The rule apply for the multiplication and division is :
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
- The rule apply for the addition and subtraction is :
The least precise number present after the decimal point determines the number of significant figures in the answer.
a) 12.3 mm × 15.853 mm :
Three significant figures.
b) 72.98 · 15.830 ml
Three significant figures.
c) 12.3 mm + 15.853 mm
Three significant figures.
d) 172.3 cm - 15.853 cm
Four significant figures.
Answer:
The NaCl concentration will be 0.03 M.
Explanation:
Given data:
Initial volume = V₁ = 56.98 mL (56.98/1000 = 0.05698 L)
Initial concentration = M₁= 0.5894 M
Final volume = V₂= 1.20 L
Final concentration = M₂= ?
Solution:
By diluting the solution volume of solution will increase while number of moles of solute remain the same.
Formula:
Initial concentration × Initial volume = Final concentration × Final volume
M₁V₁ = M₂V₂
M₂ = M₁V₁ / V₂
M₂ = 0.5894 M × 0.05698 L / 1.20 L
M₂ = 0.0336 M /1.20
M₂ = 0.03 M
Since nonmetals have five, six, or seven electrons in their valence shells, it takes less energy to gain the necessary electrons, and therefore form anions.
Answer is: 2) 14/7 N + 4/2 He --> 17/8 O + 1/1 H.
Transmutation is a process that involves a change in the nucleus of an atom. It can be natural or artificial.
This example is the first artificial nuclear transmutation described by Rutherford in 1919.
Artificial transmutation can be expressed by nuclear reaction:
Target Nuclide + Bombardment Particle → New Nuclide + Ejected Particle.
Answer:
tell his family about how he's manipulative or make him realize that even if you guys are still together you don't have feelings anymore