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To find the grams of calcium (Ca) in 145 g of calcium fluoride (CaF2), first calculate the molar mass of CaF2. The molar mass of Ca is approximately 40.08 g/mol, and that of fluorine (F) is about 19.00 g/mol, so the molar mass of CaF2 is approximately 40.08 + 2(19.00) = 78.08 g/mol. The mass fraction of Ca in CaF2 is 40.08 g/mol / 78.08 g/mol ≈ 0.513. Therefore, in 145 g of CaF2, the mass of Ca is about 145 g × 0.513 ≈ 74.4 g.
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Explain what the formula CaF2 tells you about this compound?
Ca+2 F-1 <----- these are the ions and their charges Ca+2 F-1 F-1 <----- the charges have to add up to zero, so two -1 fluorine ions cancel out one +2 calcium ions CaF2 <---- simplify
Is CaF2 a binary compound?
Calcium fluoride is a binary compound.
How many grams is contained in .27 moles of calcium?
(2.7 mol Ca / 1) * (40.078 g Ca / 1 mol Ca) = 108.21 g Ca. After significant figures, the answer is 110 g Ca.
How many grams are in .07 moles of Ca?
By definition, one mole would be the same as the atomic mass. You take the number of moles and multiply it by the atomic mass. So if you have just 1 mole, the number of grams will be the atomic mass. Calcium's atomic mass is 40.08 grams.
How many grams in 1 mole of calcium hydroxide?
The chemical formula for calcium hydroxide is Ca(OH)2. Ca: 40.08 O: 16.00 H: 1.01 Molar mass= 74.10 g Ca(OH)2
How many grams of f are in 165 caf2 grams of?
To find the grams of F in 165 g of CaF2, you need to consider the molar mass of CaF2. Calcium (Ca) has a molar mass of about 40.1 g/mol, and fluorine (F) has a molar mass of about 19 g/mol. So, the molar mass of CaF2 is about 40.1 + (19 x 2) = 78.1 g/mol. Then, you can calculate the grams of F in 165 g of CaF2 by determining the proportion of F in the compound CaF2 compared to its total molar mass.
How many moles of Ca are there in 0.18moles of Ca F2?
There are 0.18 moles of Ca2+ ions in 0.18 moles of CaF2.
What is the coefficient for F2 in Ca plus F2 CaF2?
The coefficient for F2 in the chemical equation Ca + F2 → CaF2 is 1.
What has an enthalpy change that is numerically opposite to the lattice energy of CaF2?
Of these choices:a. Ca(s) + F2(g) → CaF2(s)b. Ca(g) + F2(g) → CaF2(s)c. Ca2+(g) + 2F−(g) → CaF2(s)d. Ca(g) + 2F(g) → CaF2(s)
What compound does Ca and F make?
Calcium fluoride, CaF2
What is the formula of calcium fluoride?
The reason it becomes stable is because Ca has 2 valence electrons that it wants to get rid of to become stable. F has 7 valence electrons and wants 1 more to become stable. So, TWO F atoms each take 1 of the 2 electrons from Ca. They form an ionic bond as Ca^2+ and 2F^- to make CaF2.
How many miles from Stockton Ca to Brisbane Ca?
90 miles or 145 kilometers
What is the oxidation number of calcium (Ca) in CaF2?
The oxidation number of calcium (Ca) in CaF2 is +2. This is because fluorine (F) typically has an oxidation number of -1, and the overall charge of CaF2 is neutral. Since there are two fluorine atoms each with a -1 charge, the calcium atom must have a +2 oxidation number to balance the charges.
What is the name of the compound ionic bond of calcium and fluorine?
CaF2, Calcium Fluoride. It is useful in iron smelting
How many grams of nitrogen are there in 7.5g of Ca NO3 2?
There are 2.76 grams of nitrogen in 7.5g of Ca(NO3)2.
Explain what the formula CaF2 tells you about this compound?
Ca+2 F-1 <----- these are the ions and their charges Ca+2 F-1 F-1 <----- the charges have to add up to zero, so two -1 fluorine ions cancel out one +2 calcium ions CaF2 <---- simplify
How many moles of ca would be in 3.8G?
3.8 grams calcium (1 mole Ca/40.08 grams) = 0.09 moles calcium ==============
