Answer:
CaBr2 is a compound because it is composed of two or more elemnts
Ca - Calcium
Br - Bromine
Br2 is not a compound because it is not two or more elements it is just one element.
Br - Bromine
Explanation:
-It Can Contaminate drinking water
-It Pollutes the land with Mercury and Cyanide
Answer:
The heat of vaporization of the gold sample is 1577.397 joules per gram.
Explanation:
The latent heat of vaporization of gold (), in kilojoules per gram, is the heat required by a unit mass of gold to transform the material from liquid to gas:
(1)
Where:
- Energy required for vaporization, in joules.
- Mass, in grams.
If we know that and , then the heat of vaporization of the gold sample is:
The heat of vaporization of the gold sample is 1577.397 joules per gram.
Hello!
the correct setup is shown at bottom of your question
we get
total moles*(1/102.0 g/mol)= total grams Al2O3
hope this helps. any questions please ask. thank you kindly
The concentration of a solution of 192 grams dissolved to make 2150 mL of solution is 0.93M. Details about concentration can be found below.
<h3>How to calculate concentration?</h3>
The concentration of a solution can be calculated by dividing the number of moles of the substance by its volume.
no of moles of NH42CO3 = 192g ÷ 96g/mol = 2 mol
Concentration of solution = 2 moles ÷ 2.15L
Concentration of solution = 0.93M
Therefore, the concentration of a solution of 192 grams dissolved to make 2150 mL of solution is 0.93M.
Learn more about concentration at: brainly.com/question/22997914
#SPJ1