I have a series of questions:
The mass of 2.00 moles of Sodium chloride is how many grams? Can you please ahow me how you got your answer?
How do you write chemical formulas? For example how so you right a chemical formula for calcium fuoride?
For your first question ...
grams = moles x molar mass
the molar mass can be found underneath each element on your periodic table. When there's multiple elements you just add each molar mass.
So with sodium chloride, you have Na[sodium] which has a molar mass of 22.989 and Cl[chlorine] which has a molar mas of 35.45. They both add up to 58.44
Now simply multiple this number by 2 mols. You should get 116.878 grams.
Once you practice it a couple times it becomes easier and easier. Hope I helped!
To write a chemical formula, you need to know the elements involved and their respective charges.
For calcium fluoride, you first identify the symbols for the elements: calcium (Ca) and fluorine (F).
Next, determine the charges of each element based on their positions in the periodic table. Calcium is in Group 2, so it has a charge of +2. Fluorine is in Group 17, so it has a charge of -1.
To balance the charges, you need to find the smallest whole number ratio that will allow the overall charge to be zero. In this case, you need two fluorine atoms to balance the charge of one calcium atom.
So the chemical formula for calcium fluoride is written as CaF2. The "2" outside the parentheses indicates that there are two fluorine atoms in this compound.