<h3>
Answer:</h3>
= 3.384 × 10^23 atoms
<h3>
Explanation:</h3>
We are given 18.016 g of sulfur
We are required to determine the number of atoms of sulfur
We will use the following steps;
<h3>Step 1: Determine the number of moles of sulfur </h3>
Number of moles = Mass ÷ molar mass
Molar mass of sulfur = 32.065 g/mol
Therefore;
Number of moles = 18.016 g÷ 32.065 g/mol
= 0.562 moles
<h3>Step 2: Determine the number of atoms </h3>
Using the Avogadro's constant;
1 mole of an element = 6.022 × 10^23 atoms
Therefore;
For 0.562 moles;
= 0.562 moles × 6.022 × 10^23 atoms
= 3.384 × 10^23 atoms
Therefore; there are 3.384 × 10^23 atoms in 18.016 g of Sulfur.
I The answer is 42 cubic cm
Depends how much sugar are you talking about. If we are under the solubility concentrations of sugar no change or very little change can be observed in the volume of the solution. The sugar molecules will occupy the intermolecular spaces of the water molecules
<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:
![Na_2O+H_2O\rightarrow 2NaOH\text{ (base)}](https://tex.z-dn.net/?f=Na_2O%2BH_2O%5Crightarrow%202NaOH%5Ctext%7B%20%28base%29%7D)
Sodium forms a basic solution when its oxide reacts with water, therefore the pH of the solution will be greater than 7.
Answer:
kul and yours hope it was great