Answer:
d) All have identical pressures
Explanation:
The kinetic molecular theory explains how gas molecules behave in a container. By this theory, the gas particles behave like hard, spherical objects in a state of constant, random motion; these particles collide between them and at the walls of the container. Besides, the kinetic energy of the gas depends only on the temperature.
The pressure is the force that the particles are applying under some area, so by the theory, it depends on the number of moles (amount of particles that collides and make the force), the volume of the container and the kinetic energy, or the temperature.
Because all gases have the same number of moles and are at the same temperature and the same volume, they'll have the same pressure.
Rutherford's experiment showed that Atoms have protons in the nucleus. The reason is because his alpha particles (two protons & two neutrons with no electrons), when striking an atom, either went straight through, or bounced off at a large angle.
When finding this, I believe your answer would be D, the last one.
Answer: handpicking method
2. Difference in size.
Explanation: The method in which substances in a mixture can be separated by just picking them with the help of hand from the mixture is known as handpicking method.
It is one of the methods which can be carried out for mixture of dry substances.
As the size of cereal bits and marshmallows is significantly different, he can handpick the larger chunks of marshmallows and separate them from the smaller sized cereal bits.
1s2 2s2 2p1
fifth electron is in 2p orbital
so answer is 2 2 -1 -1/2 , or 2 2 -1 1/2
*1/2 and -1/2 are spins, so they are interchangeable when writing the first electron in the ml
1) State the equation that represents the chemical reaction
P2O5 + 3H2O → 2H3PO4
2) State the molar ratios: 1 mol P2O5 : 3 mol H2O : 2 mol H3PO4
3) Use the proportions 3molH2O / 2 mol H3PO4
0.729 mol H3PO4 * [ 3 mol H2O / 2 mol H3PO4] = 1.094 mol H2O
Answer: 1.094 mol of water
