so you can see those fluorine atoms have really spread out around the central phosphorus atom. this gives us a trigonal bi-pyramidal molecular geometry for pf5.
Answer:
Volume of sphere A = 2 mL
Volume of sphere B = 8 mL
The volume of sphere B is 4 times the volume of sphere A.
Explanation:
We'll begin by calculating the volume of each sphere.
Data obtained from the question include:
Sphere A:
Mass = 24 g
Density = 12 g/mL
Volume =?
Sphere B:
Mass = 24 g
Density = 3 g/mL
Volume =?
Next, we shall determine the volume of each sphere. This can be obtained as follow:
For sphere A:
Density = mass /volume
12 = 24/volume
Cross multiply
12 × volume = 24
Divide both side by 12
Volume = 24/12
Volume = 2 mL
For sphere B:
Density = mass /volume
3 = 24/volume
Cross multiply
3 × volume = 24
Divide both side by 3
Volume = 24/3
Volume = 8 mL
Summary:
Volume of sphere A = 2 mL
Volume of sphere B = 8 mL
Comparing the volume of both sphere, we have:
Va /Vb = 2/8
Va /Vb = 1/4
Cross multiply
Va × 4 = Vb
Vb = 4Va
From the above illustration,
The volume of sphere B is 4 times the volume of sphere A.
Explanation:
a. The melting point is at 20C and the boiling point is at 80C. The melting point is when a solid is going through a phase change to become a liquid, that is the 1st plateau in the graph. The boiling point is when the liquid is going through vaporization to become a gas. That is the second plateau.
b. At 30C, it is a liquid, since our melting point is at 20C.
c. The substance before 20C is a solid, as we add energy, it will melt and become a liquid.
The graph is different for each substance but in this same configuration where a change in the graph is a different phase or a phase change.
Where that first incline = solid
1st plateau= melting or freezing
2nd incline= liquid
2nd plateau= vaporization or condensation
3rd incline= gas
Answer:
336.0 g
Explanation:
The definition of concentration by percentage in mass per volume can be expressed as:
% m/v = mass Sucrose (in g) / Volume of Solution (in mL) * 100
The problem gives us the concentration and the volume, so <u>we solve for grams of sucrose</u>:
2.4 L ⇒ 2.4 * 1000 = 2400 mL
14 % = mass Sucrose / 2400 mL * 100
mass Sucrose = 336.0 g