MASS and DISTANCE
The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.
Answer:
7.28 mol
Explanation:
First find the Molar mass of Ba in the periodic table
which is 137.3
the unit of molar mass is g/mol
1000gx![\frac{1 mol }{137.3 g}](https://tex.z-dn.net/?f=%5Cfrac%7B1%20mol%20%7D%7B137.3%20g%7D)
7.28 mol
IUPAC name. Chromium(IV) oxide, Chromium dioxide.
Answer: 26.54 grams
Explanation:
To calculate the moles :
![\text{Moles of lithium nitride}=\frac{12.87g}{34.83g/mol}=0.369moles](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20lithium%20nitride%7D%3D%5Cfrac%7B12.87g%7D%7B34.83g%2Fmol%7D%3D0.369moles)
is the limiting reagent as it limits the formation of product and
is the excess reagent
According to stoichiometry :
As 1 moles of
give = 3 moles of ![LiOH](https://tex.z-dn.net/?f=LiOH)
Thus 0.369 moles of
give =
of ![LiOH](https://tex.z-dn.net/?f=LiOH)
Mass of ![LiOH=moles\times {\text {Molar mass}}=1.108moles\times 23.95g/mol=26.54g](https://tex.z-dn.net/?f=LiOH%3Dmoles%5Ctimes%20%7B%5Ctext%20%7BMolar%20mass%7D%7D%3D1.108moles%5Ctimes%2023.95g%2Fmol%3D26.54g)
Thus 26.54 g of
will be produced from the given mass.
Answer:
RbF2 + Ca
Explanation:
Since Rb is located in IIA as well as Ca, Rb has ion form Rb2+
Hence CaF2 + Rb → RbF2 +Ca
Please be reminded, this answer may not be 100% correct