Water<span> can </span>dissolve salt<span> because the positive part of </span>water<span>molecules attracts the negative chloride ions and the negative part of </span>water<span> molecules attracts the positive sodium ions.</span>
The question is incomplete, the complete question is;
1.000 atm of Oxygen gas, placed in a container having apinhole opening in its side. leaks from the container 2.14 timesfaster thatn 1.000 atm of an unknown gas placed in this sameapparatus. Which of the following species could be theunknown gas?
A. CL2
B. SF6
C. Kr
D. UF6
E. Xe
Answer:
SF6
Explanation:
From Graham's law;
Let the rate of diffusion of oxygen be R1
Let the rate of diffusion of unknown base be R2
Let the molar mass of oxygen by M1
Let the molar mass of unknown gas be M2
Hence;
R1/R2 = √M2/M1
So;
2.14/1 = √M2/32
(2.14/1)^2 = M/32
M= (2.14/1)^2 × 32
M= 146.6
This is the molar mass of SF6 hence the answer above.
Energy in the nucleus of an atom of uranium: Nuclear energy
Energy of a moving object: Kinetic Energy
Energy stored in chemical bonds: Potential Energy
Energy emitted from light bulb: Radiant Energy
Energy in a battery: Stored Energy
Energy in our food: Chemical Energy
Energy emitted from a radio: Electromagnetic Energy
Energy affected by mass and speed: Kinetic Energy
Energy affected by position and condition: Potential Energy
Energy from our star that some homes use for electricity: Radiant Energy
I hope this was found helpful!
I was happy to assist you with your Homework :)
Answer:
A
Explanation:
One way that energy is transferred as heat is through direct contact between objects. is the process that moves energy from one object to another when they are touching. The heat energy moves from one object to another.
Answer is: solution is acidic, because pH value is less than 7,46.
The Kw (the ionic product for water) at 0°C is 0,12·10⁻¹⁴ mol²/dm⁶.
Kw = [H⁺] · [OH⁻<span>].
</span>[H⁺] = [OH⁻] = √0,12·10⁻¹⁴ mol²/dm⁶.
[H⁺] = [OH⁻] = 3,5·10⁻⁸ mol/L.
pH = -log[H⁺].
pH = -log(3,5·10⁻⁸ mol/L).
pH = 7,46; neutral solution on 0°C.
