Answer:
The volume of the rock is 2 mL
Explanation:
The level to which the graduated cylinder is filled with water by Abby = 3 mL
The level to which the graduated cylinder after the rock is dropped in = 5 mL
Therefore;
The volume of the rock = The level to which the graduated cylinder after the rock is dropped in - The level to which the graduated cylinder is filled with water by Abby
The volume of the rock = 5 mL - 3 mL = 2 mL
The volume of the rock = 2 mL.
1 mole of butane uses 4.5 moles of oxygen
0.1 mole of butane will use = 0.1 * 4.5 = 0.45 moles
P = 100 kPa = 100,000Pa
n = 0.45
T = 295 K
V = ?
Using PV = nRT
⇒ 100,000 * V = 0.45 * 8.314 * 295
⇒100,000 V = 1103.68
⇒ V = 1103.68/100,000 m³
⇒ V = 1103.68/100,000 * 1000 dm³
⇒ V = 11.036 dm³
You need 11.036 dm³ oxygen.
The answer is = 9893.704007
It obtains a neutral pH (7). The combination of a strong acid and a strong base results in a neutral pH. The pH of HCl is about 1, and the pH of NaOH is 14.
We know that the greater the difference is in
electronegativity between the atoms which holds the molecule, the greater the
polarity is the bonds between them. <span>
<span>Since we know that F has the highest electronegativity among
all the elements, therefore PF3 has more
polar bonds than PCl3. </span></span>