4 years ago

Describe a procedure to separate a mixture of salt, sand, and water

1 answer:

5 0

You could first sift the sand out of the water with some sort of fine mesh that will catch the sand. Then, you can evaporate the water off of the salt, leaving crystallized salt, sand, and water vapor.

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Oxidation number is

zavuch27 [327]

The correct letter to your answer would be A

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3 years ago

How many moles of carbon dioxide can be formed by the decomposition of 5.0 moles of aluminium carbonate

Ksenya-84 [330]

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30 moles of CO₂

Explanation:

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2 years ago

The period 4 alkaline-earth metal has the name_______ . An isotope of this element having 20 neutrons has amass numberof _______

Cerrena [4.2K]

Answer:

The period 4 alkaline-earth metal has the name Calcium. An isotope of this element having 20 neutrons has a mass number of 40.

Explanation:

Looking at the periodic table 4th row for the alkaline-earth metal, we can find Calcium which has an atomic number of 20 (or protons number, or z). The mass number is given by the sum of protons and neutrons. If the number of protons in this case is 20 and the number of neutrons is also 20, the mass number A = 40.

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goldenfox [79]

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Gnoma [55]

BaO..........................

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3 years ago

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