For the first question:
Valuable ore deposits and gem crystals are often associated
with igneous intrusions. So for this question the correct option is option “d”.
An example like the Pegmatite’s, which are a form of igneous intrusions, is
responsible for the creation of variety of gems like topaz and tourmaline.
For the second question:
For this specific question, option “c” seems to be the
correct option. Weathering, deposition, compaction, cementation are the
possible sequence that leads to the formation of sedimentary rocks.
The question is incomplete, the complete question is;
Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable. 0.100 m C6H12O6 0.100 m AlCl3 0.100 m NaCl 0.100 m MgCl2 They all have the same boiling point.
Answer:
AlCl3 0.100 m
Explanation:
Let us remember that the boiling point elevation is given by;
ΔTb = Kb m i
Where;
ΔTb = boiling point elevation
Kb = boiling point constant
m = molality of the solution
i = Van't Hoff factor
We can see from the question that all the solutions possess the same molality, ΔTb now depends on the value of the Van't Hoff factor which in turn depends on the number of particles in solution.
AlCl3 yields four particles in solution, hence ΔTb is highest for AlCl3 . The solution having the highest value of ΔTb also has the highest boiling point.
Answer:
60.42 grams
Explanation:
So, neon has a molar mass of 20.18 g/mol , which means that every mole of neon has a mass of 20.18 g so that means three of them is 60.42 grams
!Hope This Helps!
Answer:
answer is C
Explanation:
encourage the release of carbon dioxide from the stems
Answer: The correct answers are A and B.
Explanation:
Conduction: In the conduction, the heat is
transferred from the hotter body to the colder
body until the temperature on both bodies are
equal.
In thermal equilibrium, there is no heat
transfer as the heat is transferred till the
temperature on the bodies are not same.
In the given problem, an iron bar at 200°C is
placed in thermal contact with an identical iron
bar at 120°C in an isolated system. After 30
minutes, the thermal equilibrium is attained.
Then, the temperature on both iron bars are
equal.Both iron bars are at 160°C in an isolated
system.
But in an open system, the temperatures of the
iron bars after 30 minutes would be less than
160°C. There will be heat lost to the
surrounding. The room temperature is 25°C.
There will be exchange of the heat occur
between the iron bars and the surrounding. But
It would take more than 30 minutes for both iron
bars to reach 160°C because heat would be
transferred less efficiently.
Therefore, the correct options are (A) and (B).