Answer:
C: More than 50 languages are spoken in the nation.
Explanation:
The nucleus consists of the protons and neutrons. It contains the most mass in the atom.
Answer:
3
Explanation:
i feel in my gut its the right answer
I would choose C bc if u look at it closely u can notice it goes up steadily and then BANG it decreases a lot
Answer:
3.65 g / ml correct to 3 sig. fig.
Explanation:
The computation of the concentration required is shown below:
As we know that
[A] = mass of solute ÷ volume of solution
Before that first find the mass of solute
Given that
Initial weight = 5.55g
And,
Final weight = 92.7 g
So,
Mass of KCl is
= 92.7 - 5.55
= 87.15 g ~ 87.2 g
Now the KCi is fully dissolved, so the volume is 23.9 ml
So, concentration is
= 87.2 g ÷ 23.9 ml
= 3.65 g / ml correct to 3 sig. fig.