Answer:
m = 671 grams
Explanation:
Given that,
No of moles, n = 4.9
Molar mass of Barium, M = 137 g
Mass divided by molar mass is equal to no of moles. It can be given by the formula as follows :
or
m = 671 grams
So, the total mass of the sample of Barium is 671 grams.
It is fresher because of new transportation techniques and refrigerated trailers.
Answer:
It's a physical property because color is chemically not significant.
But occurance of a flame is chemical property because combustion takes place
Despite its appearance, air has a ‘thickness’ so when the sun is high in the sky the light travels through the air on a very much shorter path than when it is low on the horizon.
Imagine that air water and you are below the surface, the light from an overhead sun will be quite sharp and bright, but if lower in the sky it will have to travel through much more water to reach you, so will look less bright and sharp. It ma not seem the same, but the atmosphere is just like very thin water, and a low lying sun will be drastically reduced in strength, so all you will see is a sun with a shift to the red end of the spectrum as all the actinic part will be filtered away by that thicker atmosphere.
Left Panel
A: Not correct. One reactant is dissolved in water. The other is a solid that combines with the one reactant that is in water. That's what aqueous (aq) means.
B: CuCl2 is aqueous (the equation says so) ClCl2(aq) means that the copper chloride is in water. Whatever else B says, this much is true so that Statement B is false.
C: False. The reactants contain a liquid and a solid.
D: True. The statement is true because CuCO3 is labels as a solid(s), and CO2 is labeled as a gas (g).
E: is false. Where is the solid in the products?
Right Panel
Sample Mass: 33.5 grams
Volume: 3.2 cm^3
Density = mass / volume
Density = 33.5 / 3.2 = 10.47.
It can only be silver.
