3 years ago

What do elements of the same group have in common

1 answer:

4 0

Answer and explanation:

Elements of the same group have the same number of valence electrons, therefore they behave similarly. For example in group 2, alkaline earth metals, all the elements have two valence electrons.

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A 0.25 M solution of NaCl must be diluted into a 250 mL solution (0.08 M). What volume should be taken from the original solutio

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80ml

Explanation:

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An object has a mass of 20 g and displaces a volume of 5 mL. What is the object's density?

lara [203]

Hey There!:

The density is the quotient between the mass of a material and the volume occupied by it, The density can be expressed for a substance or for a mixture of substances. For example, water density in ambient conditions is equal to 1.00 g/cm3, which means that in 1 cm³ or 1 mL, there are 1.0 g of water. Therefore:

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D = 4,0 g/mL

hope that helps!

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