Fluorine is a greenish yellowish gas and a yellow liquid
Answer:
0.0630
Explanation:
The molar mass of urea = 60 g/mol
we all know that:
Then; the number of moles of urea
= 
= 0.0667 mol
Similarly; the number of moles of methanol
= 
= 0.9988 mol
The total number of moles = (0.0667 + 0.9988) mol
= 1.0655 mol
Finally,the mole fraction of urea 
= 
= 
= 0.0630
Answer:
See below!
Explanation:
For the chemical formula, you need to have enough of each atom so that the charge is zero.
Aluminum has a +3 charge, and fluorine has a -1 charge. Since the charge has to be zero, you need three fluorines, giving you AlF₃.
Barium has a +2 charge, and oxygen has a -2 charge. Since the charges are equal in magnitude but opposite in sign, you only need one of each atom giving you BaO.
The name of the ionic compound will be the metal and then the nonmetal. When putting the nonmetal in, change the ending to "-ide". For example "chlorine" would be "chloride.
CaCl₂ ==> calcium chloride
Ga₂S₃ ==> gallium sulfide
K₃N ==> potassium nitride
AlF₃ ==> aluminum fluoride
BaO ==> barium oxide
Mark Brainliest please
Answer:
Neutralization of nitric acid with sodium hydroxide makes it possible to obtain sodium nitrate in the laboratory in its pure form.
HNO3 + NaOH → NaNO3 + H2O
NaNO3 cannot be prepared utilizing the same method used for the preparation of CaCO3, because calcium carbonate is not soluble in water, and sodium nitrate is soluble in water.
