Shelby measured the volume of a cylinder and determined it to be 54.5 cm3 . The teacher told her that she was 4.25% too high in
1 answer:
Answer:
V = 56.816 cm³
Explanation:
Given that,
The measured value of the cylinder is 54.5 cm³
The percent error in the measurement of the volume is 4.25%
We need to find the actual volume of the cylinder.
Firstly, we can find the error in the calculation as follows :
It is mentioned in the problem that, the teacher told her that she was 4.25% too high in her determination of the volume. It would mean that,
Total volume = 54.5 + 2.316 = 56.816 cm³
Hence, the actual volume of the cylinder is 56.816 cm³.
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Answer:-
Explanations:- Lattice energy depends on two factors, charge and size.
High charge and small size gives higher lattice energy where as low charge and bigger size gives lower lattice energy.
in LiCl, NaCl and KCl, the anion is same and also the charges for Li, Na and K are also same. The deciding factor here is the size of cations. Since the size increases as we move down a group, the order of size of these three atoms is Li<Na<K.
The order of lattice energy is exactly opposite as it's increases as the size decreases.
Now, if we look at magnesium chloride and strontium chloride then again the anion is common but the metals have higher charge as compared to the alkali metals(Li, Na and K). So, lattice energy values must be higher for these two compounds. If we compare Mg and Sr then size of Mg is smaller and so the lattice energy would be greater for this.
Hence, the increasing order of lattice energy is .