Answer:
what is the volume of the water at 307 k?
Answer:
1.87 g of Al were reacted
Explanation:
We must apply the Ideal Gases law to solve the amount of moles of H₂ produced at STP
T = 273 K
P = 1 atm
P. V = n . R . T
1 atm . 2.34 L = n . 0.082 . 273 K
( 1 atm . 2.34 L ) / ( 0.082 . 273 K) = n
0.104 moles = n
Now we can find the moles of Al with the reaction. As ratio is 3:2 we have to make a rule of three to determine the moles we used.
3 moles of H₂ came from 2 moles of Al
0.104 moles of H₂ would come from ( 0.104 . 2 ) /3 = 0.0693 moles of Al
Finally we can know the mass of Al we used ( moles . molar mass)
0.0693 mol . 26.98 g/mol = 1.87 g
The question is: The pH of lemon juice at 298 K is found to be 2.32. What is the concentration of H3O (+) ions in the solution. So, you just have to use the formula pH = log { 1 / [H3O+] } = - log { [H3O+] }, from which you can solve for [H3O+] as: [H3O+] = 10 ^ (- pH) = 10 ^ (-2.32) = 0.00479 M = 4.79 * 10^ -3<span> Answer: 4.79 * 1 0^-3M</span>
Valences Electrons or the most outside ring of electrons.
a because as temperature increases, reaction rate increases.
