Answer:
Al₄O₅
Explanation:
The key at the bottom tells us the blue spheres are oxygen atoms and the red spheres are aluminum atoms. By counting, there are 4 aluminum atoms and 5 oxygen atoms. Therefore, the formula is Al₄O₅.
V = maximum capacity of human lung = 3 liter = 3 x 0.001 m³ = 0.003 m³ (Since 1 liter = 0.001 m³)
P = pressure of oxygen = 21.1 kilo pascal = 21.1 x 1000 = 21100 Pa (since 1 kilo = 1000)
T = temperature of air = 295 K
n = number of moles of oxygen
Using the ideal gas equation
PV = n RT
inserting the above values in the equation
(21100) (0.003) = n (8.314) (295)
n = 0.026 moles
The answer is A.
A: heat
plz give me brainliest <3
Answer:
1837.65 mmHg is the pressure in millimeters of mercury.
Explanation:
The expression for the conversion of Pressure (kPa) to pressure (mmHg) is shown below as:-
Pressure (kPa) = 7.501 x Pressure (mmHg)
The pressure value given = 245 kPa
It can be expressed in millimeters of mercury as:-
Pressure = 7.501 x 245 mmHg = 1837.65 mmHg
<u>1837.65 mmHg is the pressure in millimeters of mercury.</u>
Answer:
RbI<RbBr<RbCl<RbF
Explanation:
As stated in the question, the latice energy depends on the relative size of the ions. When the action size is constant as in the question, the lattice energy now depends on the relative of the anions. The order of increase in ionic sizes among the halide ions is fluoride<Chloride<Bromide<Iodide. This order of increasing size means that the lattice energy will decrease accordingly as shown in the answer.
