Answer:
What is true of a solution of 1.0 M HCl(aq)? It contains 1.0 gram of HCl per 100 grams of water.
Explanation:
The given question is incomplete. The complete question is:
An acidic solution at 25°C will have a hydronium ion concentration ________ and a pH value ________.
>
M, pH < 7.00
<
, pH < 7.00
<
,, pH > 7.00
>
,, pH > 7.00
Answer:
>
M, pH < 7.00
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.
![pH=-\log [H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH_3O%5E%2B%5D)
![7=-log[H_3O^+]](https://tex.z-dn.net/?f=7%3D-log%5BH_3O%5E%2B%5D)
![[H_3O^+]=10^{-7}](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%3D10%5E%7B-7%7D)
As pH of acids is less than 7, the hydronium ion concentration is greater than
Thus the correct option is
>
M, pH < 7.00
In order for an object of be considered a living organism, that "thing" must live, breath, grow and reproduce ;)
Answer:
9.834 moles Cf.
Explanation:
The number of moles of a substance is an easy way to represents its amount. Avogadro has determined that the total amount in 1 mol is equal to 6.02x10²³(Avgadros' number), so 1 mol has 6.02x10²³ atoms, molecules, ions, or what we are measuring. So:
1 mol of Cf -------------------- 6.02x10²³ atoms
x -------------------- 5.92x10²⁴
By a simple direct three rule:
6.02x10²³x = 5.92x10²⁴
x = 5.92x10²⁴/6.02x10²³
x = 9.834 moles Cf
We apply the ideal gas equation:
PV = nRT
V = 5 x 3.79/1000 m³
= 0.01895
T = 20 + 273 = 293 K
n = 15
R = 8.314
P = nRT/V
= (15 x 8.314 x 293)/(0.01895)
= 1,928,234 Pa ≈ 1.93 MPa