Answer:
Explanation:
To calculate the reduced mass of nitrogen molecule = Mn x Mn/ Mn + Mn
Mn = atomic mass of Nitrogen = 14.00
reduced mass = 14 x 14 /14 + 14 = 7
Similarly for HCl; reduced mass for a hydrogen chloride molecule = Mh x Mcl/Mh + Mcl
where Mh = atomic mass of hydrogen = 1.008
Mcl = atomic mass of chrorine = 34.97
reduced mass for HCl = 1.008 x 34.97 /1.008 + 34.97
= 0.97
Answer:
A. Has a faster-moving molecules than the same cup of iced tea.
Explanation:
The keyword hear is <em>hot</em>. Immediately, we can conclude that it has more energy than a cup of iced tea. Heat is a form of energy. This type of energy is given to the molecules in the hot cup of tea which makes them really excited. When they're excited, they have many more collisions and thus move much faster. Although the molecules in a cup of iced tea are still moving, their energy is greatly reduced than that of a cup of hot tea (which has energy being added to it through the form of heat).
The number of molecules : N = 1.505 x 10²³
<h3>Further explanation</h3>
Given
0.25 mol N₂O₄
Required
The number of molecules
Solution
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
N = 0.25 x 6.02.10²³
N = 1.505 x 10²³
There are 1.65 × 10^(-7) g S in 3.01 × 10^15 atoms S.
<em>Step 1</em>. Use Avogadro’s number to convert <em>atoms of S to moles of S</em>
Moles of S = 3.01 × 10^15 atoms S × (1 mol S/6.022 × 10^23 atoms S)
= 5.148 × 10^(-9) mol S
<em>Step 2</em>. Use the molar mass of S to convert <em>moles of S to grams of S
</em>
Mass of S = 5.148 × 10^(-9) mol S × (32.06 g S/1 mol S) = 1.65 × 10^(-7) g S