The elements that form compounds difficulty in the fourth period in the periodic table
- In the fourth periodic table, there contain 18 elements that forms compounds difficulty beginning with potassium and ending with krypton – one element for each of the eighteen groups.
- This is as a result of the additional 10 electrons that are contributed by the the sublevel.
The period 4 transition metals are scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and zinc (Zn).
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brainly.com/question/16462207
Answer:
C; ΔSuniv>0
Explanation:
In this question, we want to select which of the options must be true.
What we should understand is that for a process to be spontaneous, the change in entropy must be greater than 0 i.e the change in entropy must be positive.
Looking at the options we have; option C is the correct answer.
Option B looks correct but it is wrong. This is because if change in universal entropy is greater than zero, then change in Gibbs free energy must be less than zero for spontaneity to occur
Answer:
0.00701 moles of neon gas will occupy 170 ml of volume under the same conditions.
Explanation:
The relationship of number of moles and volume at constant temperature and pressure was given by Avogadro's law. This law states that volume is directly proportional to number of moles at constant temperature and pressure.
The equation used to calculate number of moles is given by:
where,
are the initial volume and number of moles
are the final volume and number of moles
We are given:
Putting values in above equation, we get:
0.00701 moles of neon gas will occupy 170 ml of volume under the same conditions.
Answer:
depth of the liquid and nature of liquid affects the pressure due to liquid contained in a vessel
Answer: The ΔH of the reaction if 51.3 g of reacts with excess to yield 1387.6 kJ is 432.27kJ
Explanation:
To calculate the moles, we use the equation:
moles of
As is present in excess, is the limiting reagent as it limits the formation of product.
If 3.21 moles of methane releases heat = 1387.6 kJ
Thus 1 mole of methane release=