Hemiacetals are compounds that are derived from aldehydes and ketones while acetals are compounds with a central carbon atom with 4 bonds attached to it. It must be saturated and has a tetrahedral geometry.
Cytokinesis ensures that one nucleus ends up in daughter cells during cell division
<u>Answer:</u>
<u>For a:</u> The increasing of atomic radius is:
Al < Mg < Na
<u>For b:</u> The pH of the solution of sodium oxide is greater than 7.
<u>Explanation:</u>
Atomic radius is defined as the distance of the nucleus to the outermost shell containing electrons.
It decreases as we move from left to right in a period because electrons get added up in the same shell and effective nuclear charge increased which results in the shrinkage of the atom.
Sodium lies in Period 3, group 1. Its atomic radius is 1.90
Magnesium lies in Period 3, group 2. Its atomic radius is 1.60
Aluminium lies in Period 3, group 3. Its atomic radius is 1.32
The increasing of atomic radius will be:
Al < Mg < Na
The mathematical values proves the result.
There are 3 types of solution based on pH:
- If pH > 7, the solution is basic in nature.
- If pH < 7, the solution is acidic in nature.
- If pH = 7, the solution is neutral in nature.
When a metal reacts with oxygen present in air, it forms basic oxide which simply means when they react with water, they form basic solution.
The chemical equation for the reaction of sodium (metal) with oxygen present in air and reaction with water of the product so formed are as follows:
Sodium forms a basic solution when its oxide reacts with water, therefore the pH of the solution will be greater than 7.
The atomic number is equal to the number of protons
Answer:
, The partial pressure of O2 is = 21 atm
Explanation:
The concept is the pressure exerted by each gas is independent of one another or in other words independent of the pressure exerted by all other gases present.
This means that total pressure is the sum of the individual pressure of each gas by dalton's law.
So, putting the given values we get
43 = P_O2 +15+7
P_O2 = 21 atm
Therefore, The partial pressure of O2 is = 21 atm