Answer: The moles of gas present in the cylinder is 0.34 moles.
Explanation:
Given:
= 2.7 atm,
= 3.1 L,
= 300 K
= ?,
= 9.4 L,
= 610 K
Formula used to calculate the final temperature is as follows.

Substitute the values into above formula as follows.

Now, moles present upon heating the cylinder are as follows.

Thus, we can conclude that moles of gas present in the cylinder is 0.34 moles.
Answer:
The differences in water temperature and salinity are responsible for deep water or ocean currents. Other inducing factors for water currents are wind, cabbeling, Coriolis effect and breaking waves.
Answer:
A
Explanation:
always more reactants than products
Mass of SiC = 2 g
<h3>Further explanation</h3>
Given
Reaction
SiO₂(s) + 3C(s) → SiC(s) + 2CO(g)
3.00 g of SiO₂
4.50 g of C
Required
mass of SiC
Solution
mol SiO₂ (MW=60,08 g/mol) :
= 3 g : 60.08 g/mol
= 0.0499
mol C(Ar = 12 g/mol) :
= 4.5 g : 12 g/mol
= 0.375
mol : coefficient of reactants =
SiO₂ : 0.0499/1 = 0.0499
C : 0.375/3 = 0.125
SiO₂ as a limiting reactant(smaller ratio)
Mol SiC based on mol SiO₂ = 0.0499
Mass SiC :
= mol x MW
= 0.0499 x 40,11 g/mol
= 2 g