B. Ionic solids have higher melting points than molecular solids.
Explanation:
1 literThe total of water is equal to 1000.0 g of water
we need to find the molality of a solution containing 10.0 g of dissolved in Na₂S0₄1000.0 g of water
1. For that find the molar mass
Na: 2 x 22.99= 45.98
S: 32.07
O: 4 x 16= 64
The total molar mass is 142.05
We have to find the number of moles, y
To find the number of moles divide 10.0g by 142.05 g/mol.
So the number of moles is 0.0704 moles.
For the molarity, you need the number of moles divided by the volume. So, 0.0704 mol/1 L.
The molarity would end up being 0.0704 M
The molality of a solution containing 10.0 g of Na2SO4 dissolved in 1000.0 g of water is 0.0704 Mliter
Answer:
Kc of the reaction is 0.9375
Explanation:
Step 1: Data given
Moles of SO2 = 0.40 moles
Moles of O2 = 0.60 moles
Volume = 1.00 L
After the reactio we find 0.30 moles SO3
Step 2: The balanced equation
2 SO2(g) + O2(g) ⇔ 2SO3(g)
Step 3: Calculate Kc
Kc = [SO3]² / ([SO2]²[O2])
Kc = 0.30² / (0.40²*0.60)
Kc = 0.9375
Kc of the reaction is 0.9375
50 degrees, the angle of incident is always equal to the angle of reflection
The statement that best describes the graph of the relationship between the volume and temperature is; "It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume."
The graph of volume against temperature is used to demonstrate Charles law. This law states that, the volume of a given mass of gas is directly proportional to its absolute temperature at constant pressure.
According to this law, the volume increases as temperature increases. This is the meaning of the positive slope of the straight line graph.
Hence, the statement that best describes the graph of the relationship between the volume and temperature of an enclosed gas is "It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume."
Learn more: brainly.com/question/1190311