First, we need to know the amounts of the elements in the compound.
Tin (Sn)= 5.28 g
Fluorine (F) = 8.65 - 5.28 = 3.37 g
Convert these to units of moles by dividing the molar masses.
Tin (Sn)= 5.28 g / 118.71 g/mol = 0.044 mol
Fluorine (F) = 3.37 g / 19.00 g/mol = 0.177 mol
Divide both by the least number of moles of the two.
Tin (Sn)= 0.044 mol / 0.044 mol = 1
Fluorine (F) = 0.177 mol / 0.044 mol = 4
Therefore, the empirical formula would be:
SnF4
Answer:Ca
Explanation:fact according to the periodic table
Answer:
see below
Explanation:
2 Hz, means 2 complete waves are produced in one second, so
2 waves ----- 1 second
2 x 60 -------1 x 60
120 waves ------60 seconds
hope this helps,
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Answer:
ΔL=0.14m
Explanation:
The period of oscillations of simple pendulum is
Here L is length of pendulum and g is acceleration due to gravity
So the length of pendulum is:
So increase in length is:
ΔL=L₂-L₁
![=\frac{T_{2}^{2}g }{4 \pi^{2} }-\frac{T_{1}^{2}g }{4 \pi^{2} }\\=\frac{g}{4 \pi^{2} }[T_2^{2} -T_1^{2} ]\\ =\frac{9.8}{4 \pi^{2}}[(1.15+0.22)^{2}-(1.15)^{2} ] \\=0.14m](https://tex.z-dn.net/?f=%3D%5Cfrac%7BT_%7B2%7D%5E%7B2%7Dg%20%7D%7B4%20%5Cpi%5E%7B2%7D%20%7D-%5Cfrac%7BT_%7B1%7D%5E%7B2%7Dg%20%7D%7B4%20%5Cpi%5E%7B2%7D%20%7D%5C%5C%3D%5Cfrac%7Bg%7D%7B4%20%5Cpi%5E%7B2%7D%20%7D%5BT_2%5E%7B2%7D%20-T_1%5E%7B2%7D%20%5D%5C%5C%20%3D%5Cfrac%7B9.8%7D%7B4%20%5Cpi%5E%7B2%7D%7D%5B%281.15%2B0.22%29%5E%7B2%7D-%281.15%29%5E%7B2%7D%20%20%5D%20%5C%5C%3D0.14m)
ΔL=0.14m
