Answer:
C) solid, liquid, gas
Explanation:
Which grouping shows a decrease in Intermolecular
Forces of Attraction?
A) gas, liquid, solid B) liquid, solid, gas
C) solid, liquid, gas D) solid, gas, liquid
the further the particles are from each other, the less the intermolecular attraction they are farthest in a gas, then a liquid, and closest in a solid
Answer: 6.0 g of silicon has more atoms
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
of particles.
To calculate the moles, we use the equation:
![\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%7D%3D%5Cfrac%7B%5Ctext%7BGiven%20mass%7D%7D%7B%5Ctext%20%7BMolar%20mass%7D%7D)
a) ![\text{Number of moles of silicon}=\frac{6.0g}{28g/mol}=0.21moles](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%20of%20silicon%7D%3D%5Cfrac%7B6.0g%7D%7B28g%2Fmol%7D%3D0.21moles)
1 mole of Si contains =
atoms
0.21 moles of Si contains =
atoms
b) ![\text{Number of moles of iron}=\frac{6.0g}{56g/mol}=0.11moles](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%20of%20iron%7D%3D%5Cfrac%7B6.0g%7D%7B56g%2Fmol%7D%3D0.11moles)
1 mole of Fe contains =
atoms
0.11 moles of Fe contains =
atoms
Thus 6.0 g of silicon has more atoms
b.casuality since scientists test everything out
Answer:
he distance to a star can be found by comparing its luminosity to its apparent brightness.
Explanation: A star that is far away will be very dim compared to its luminosity. So it proves that the ratio of its luminosity to apparent brightness will be greater than for a nearby star.
The answer is mixture. A mixture is a substance that is composed of a combination of different elements that are not chemically combined (and can be physically separated). The troposphere is the lowest layer of the earth’s atmosphere and where the weather condition occurs. This means the air is mixed with water vapor (that form clouds) and other impurities such as dust and aerosols.