If my math is right, it should be around 4.33x10^23
To get this you need to find the atomic weight of MgI2, which is around 278. You divide the mass in grams by the atomic mass to find Moles, then you multiply the moles by Avogadros number: 6.022x10^23. Hope I was helpful
Answer:
The answer is
<h2>4.5 × 10²²</h2>
Explanation:
To find the number of atoms of titanium , given it's number of moles we use the formula
<h3>N = n × L</h3>
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
n = 0.075 mol
We have
N = 0.075 × 6.02 × 10²³
We have the final answer as
<h3>4.5 × 10²²</h3>
Hope this helps you
Answer:
Valinomycin
Explanation:
This antibiotic is acquired from the Streptomyces species cells. Valinomycin is selective to potassium and inhibits sodium ions from entering the cell. This antibiotic allows the potassium ions to move down the electrochemical potential gradient of the lipid membranes.
Fe + 2 HCl --> FeCl2 + H2 <span>
2 Al + 6 HCl --> 2 AlCl3 + 3 H2
<span>total moles H2 = 0.100 g / (2.016 g/mol) =0.0496 mol
let x = mass Fe
let y = mass Al
</span></span>
<span>Total mass of alloy is:
<span>x + y = 2.07
</span></span>
<span>Performing H2 balance based on stoichiometry:
<span>x / 55.847 + 3 y/2 / 26.9815 = 0.0496
x / 55.847 + 3y/53.963 = 0.0496
<span>53.963 x + 167.541 y = 149.48
<span>53.967 ( 2.07 - y) + 167.541 y = 149.48
<span>111.71 - 53.967 y + 167.541 y = 149.48
<span>113.6 y = 37.77
y = 0.332 g = mass Al
% Al = 0.332 x 100/ 2.07 = 16.06 %
<span>% Fe = 83.94%</span></span></span></span></span></span></span>
Answer:E
Explanation:
The electron is expected to be in any of the 4p orbitals. For the 4p orbitals
n=4
l=1
ml=-1,0,1
ms=-1/2 or +1/2
All the ml and ms configurations are equiprobable hence the answer.