Tin(II) fluoride (SnF2) is added to toothpaste. What is the mass of F in grand in 34.6 g of the compound. Round to three sit figs
To find the mass of F in 34.6 g of SnF2, we need to determine the molar mass of SnF2 and then use the molar ratio between F and SnF2.
The molar mass of SnF2 can be calculated by adding the atomic masses of each element:
Molar mass of SnF2 = (atomic mass of Sn) + 2(atomic mass of F)
The atomic mass of Sn is 118.71 g/mol, and the atomic mass of F is 18.9984 g/mol.
Molar mass of SnF2 = 118.71 g/mol + 2(18.9984 g/mol)
Molar mass of SnF2 = 156.7068 g/mol
Now we can calculate the mass of F in 34.6 g of SnF2 using the molar ratio:
Mass of F = (34.6 g SnF2) x (2 mol F / 1 mol SnF2) x (18.9984 g F / 1 mol F)
Mass of F = 34.6 g x (2 x 18.9984 g / 156.7068 g)
Mass of F = 34.6 g x 0.2436652
Mass of F = 8.432 g
Rounding to three significant figures, the mass of F in 34.6 g of SnF2 is 8.43 g.
To determine the mass of F in grams in 34.6 g of SnF2, you need to calculate the molar mass of SnF2 and then convert it to grams of F.
1. Find the molar mass of SnF2:
The molar mass of Sn (tin) is 118.71 g/mol.
The molar mass of F (fluorine) is 18.998 g/mol.
Since SnF2 has one Sn atom and two F atoms, the molar mass of SnF2 can be calculated as follows:
Molar mass of SnF2 = (molar mass of Sn) + 2 * (molar mass of F)
= (118.71 g/mol) + 2 * (18.998 g/mol)
= 118.71 g/mol + 37.996 g/mol
= 156.706 g/mol
2. Calculate the mass of F in grams:
To find the mass of F in grams in 34.6 g of SnF2, you can set up a simple proportion:
(mass of F in grams) / (mass of SnF2 in grams) = (molar mass of F) / (molar mass of SnF2)
Let's substitute the values we know:
(mass of F in grams) / 34.6 g = 18.998 g/mol / 156.706 g/mol
Cross multiply and solve for the mass of F:
(mass of F in grams) = (34.6 g * 18.998 g/mol) / 156.706 g/mol
= 5.029 g
Therefore, the mass of F in grams in 34.6 g of SnF2 is 5.029 g.
To find the mass of F (fluorine) in tin(II) fluoride (SnF2), you need to determine the molar mass of the compound and then calculate the mass of F based on its ratio in the formula.
Here's the step-by-step process for obtaining the answer:
1. Determine the molar mass of SnF2:
- The atomic mass of tin (Sn) is 118.71 g/mol.
- The atomic mass of fluorine (F) is 18.99 g/mol.
- SnF2 has one tin atom and two fluorine atoms.
- Multiply the atomic mass of tin by 1 and the atomic mass of fluorine by 2, then add them together:
(1 * 118.71 g/mol) + (2 * 18.99 g/mol) = 156.69 g/mol.
2. Calculate the mass of F in 34.6 g of SnF2:
- To determine the mass of fluorine, we need to know the molar ratio of F to SnF2.
- From the chemical formula SnF2, we can see that for every 1 mole of SnF2, there are 2 moles of F.
- Convert the given mass of SnF2 (34.6 g) to moles using its molar mass:
34.6 g / 156.69 g/mol ≈ 0.221 moles of SnF2.
- Since there is a 1:2 ratio of F to SnF2, multiply the moles of SnF2 by 2 to get the moles of F:
0.221 moles SnF2 * 2 moles F / 1 mole SnF2 = 0.442 moles F.
3. Convert the moles of F to grams:
- Multiply the moles of F by its molar mass (18.99 g/mol):
0.442 moles F * 18.99 g/mol = 8.38 g F.
Therefore, the mass of F in 34.6 g of tin(II) fluoride is approximately 8.38 grams (rounded to three significant figures).