Answer:
= 25 g
Explanation:
Using the formula;
A = A₀ (1/2)^(t/h)
where A is the final amount,
A₀ is the initial amount of the substance,
t is the time and
h is the half-life of the substance,
In this case; the half life of U-238 h is equal to 4.47 billion years.
A = A₀ (1/2)^(t/h)
A = 50 (1/2)^(4.5 / 4.47)
= 24.88
<u> = 25 g</u>
Answer: is equal to the gravitational pull on an object
Explanation:
<span>1. Which type of metal did Rutherford shoot alpha particles into?
C)Gold
2.When Thomson held a positively charged plate near the cathode ray, the beam bent toward the plate. What conclusion can be drawn from this observation?
C)The beam was negatively charged.
3.)What was observed during Rutherford's experiment?
D)Most of the particles went through the foil, but some were deflected.</span>
Covalent=unequally.
Ionic=unequally.
Metallic=Equally.
Answer:
A
Explanation:
N2(g) + 3H2(g) -> 2NH3(g)
According to Le Chatelier's principle, and since H2(g) is on the left side and a reactant, if it's concentration is increased, the equilibrium shifts to the right and the forward reaction is favoured, leading to the production of more NH3(g). The rate of the forward reaction increases.
As the concentration of H2(g) is increased, the concentration of the other reactant, N2(g) decreases as more of it is used up to react with the excess H2(g)
