Explanation:
So first find out the moles. The percentage is out of 100 so just convert the percentage into mass by just changing the sign.
Ga = 55g/69.7 = 0.789 moles
F=45g/19 = 2.37 moles
Then divide by smallest value to find out the formula
Ga=0.789÷0.789= 1
F=2.37÷0.789 = 3
GaF3
hope this helps:)
D - density: 40 mg/ml
V - volume: 175 ml
m - mass: ??
__________
d = m/V
m = V×d
m = 175×40
m = 7000 mg = 7 g
:•)
Answer:
CaBr2 is a colorless solid and the charge on Calcium is +2
Explanation:
CaBr2 is a colorless solid at room temperature.
Other properties include -
a) It is a crystalline solid
b) Melting point of 765°C.
c) It is deliquescent
d) Soluble in water and absolute alcohol.
The charge of Br is -1. Here two atoms of Br attaches with one atom of calcium. Hence the charge of calcium is +2
Answer:
The cube
Explanation:
When the cube is put on the triple beam balance it gives the mass of 429.3
