Answer:
mass = 0.907865 grams
Explanation:
From the periodic table:
molar mass of Li = 6.941 grams
molar mass of F = 18.998 grams
Therefore:
molar mass of LiF = 6.941 + 18.998 = 25.939 grams/mole
number of moles can be calculated as follows:
number of moles = mass / molar mass
We have:
number of moles = 0.035 moles
molar mass = 25.939 grams/mole
Substitute in the equation to get the mass as follows:
0.035 = mass / 25.939
mass = 0.035 * 25.939 = 0.907865 grams
Hope this helps :)
Answer:
Answer is shown on the paper :D
Explanation:
Remember to follow sig-figs.
Answer:1 mol
Explanation:
the conversion from mol to volume of gas at STP is 22.4L, meaning that the amount of mols in a gas of volume 22.4L at STP is one mol.
(7th grader sorry if its wrong)
Answer:
the mass of a planet doesn't matter, considering many
planets are made up of gas, and how in different situations,
atmospheres can be destroyed (The Sun burnt off Mercury's
Atmosphere). However, in some cases, the planet can be in a good
situation on the galaxic map, and have great conditions for an
atmosphere, such as Earth. In which case, the mass of an object can
attract a smaller object, causing gravity. Therefore, the bigger
the mass of a planet when in right and specific conditions, the
more atmosphere it can attract, if there is any floating by the
planet.
If it is bigger it will have more gravitational influence and
therefore gather more gases.
Explanation:
hope this helped!
Answer:
4
Explanation:
1 is correct
Liquids have no definite shape as they take up the shape of the container. Thus, we can say a liquid has no shape of its own but rather has the shape of the container in which it is filled.
2 is correct
When the atmospheric temperature is increased, it also will increase the boiling point of the liquid
3 is correct
This is an extension of the statement 2. While we decrease the atmospheric pressure, we are also decreasing the boiling point
4 is incorrect
A liquid have a definite volume. When we say a volume is definite, it means the volume is fixed and does not change. The volume of liquids is definite for a particular mass of the liquid and does not change
