Question

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Answer 1

Answer:

The converse of the Pythagorean theorem says that if the side lengths of a triangle satisfy the equation a2+b2=c2, then the triangle is a right triangle. Which triangle is a right triangle?

Answer 2

hyy mate ✌️

9. an element is a pure substance which cannot be broken down by chemical means, consisting of atoms which have identical numbers of protons in their atomic nuclei. The number of protons in the nucleus is the defining property of an element, and is referred to as the atomic number.

8. Crystallisation technique for purification is better than evaporation because: ... Crystallisation does not require very high temperature conditions, there is no need to boil the solvent. In evaporation, we allow the solution to heat to make the solvent evaporate but this may degrade the solute into some another compound.

7. Acetone, ethanol and methanol are polar solvents that are mixed with water. There is no way that these mixtures (acetone:water, ethanol:water and methanol:water) can be separated into two layers.