Answer:
l=1
Explanation:
The angular momentum quantum number is a quantum number that describes the 'shape' of an orbital and tells us which subshells are present in the principal shell. A critical look at the electronic configuration of phosphorus at the ground state depicts the outermost electron to be in the P orbital where the angular quantum number ,l=1 .
Answer: A
Explanation:just passed it
Answer:
9.73 grams of iodine
Explanation:
First we calculate the molar mass of the tyroxine C₁₅H₁₇NO₄I₄:
M = 15 × 12 + 17 × 1 + 1 × 14 + 4 × 16 + 4 × 127 = 783 g/mole
The taking in account that 1 mole of tyroxine have 4 moles of iodine atoms (508 g) we devise the following reasoning:
if from 783 g of tyroxine we can extract 508 g of iodine
the from 15 g of tyroxine we can extract X g of iodine
X = (15 × 508) / 783 = 9.73 grams of iodine
I believe it would be the 2nd one, “increasing the area of their contact”.
Answer:
Q4. 2H₂ + O₂ ⟶ 2H₂O; 5; 2
Q5. 24; 30; H₂; 0; 5
Explanation:
Q4.
The equation for the reaction is
2H₂ + O₂ ⟶ 2H₂O
One O₂ molecule reacts with 2H₂ molecules.
We started with seven oxygen molecules. Five of them reacted, so
Two O₂ molecules did not react.
Q5.
Two water molecules form from two hydrogen molecules.
Two water molecules form from one oxygen molecule
Hydrogen forms fewer water molecules of water, so
Hydrogen is the limiting reactant.
The 24 hydrogen molecules will be completely used up.
The number of hydrogen molecules remaining at the end of the reaction is zero.
They have reacted with 12 O₂ molecules.
The number of O₂ molecules remaining is 17 - 12 = 5
