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andrey2020 [161]
2 years ago
11

The equation below represents the chemical reaction between the elements hydrogen and oxygen when the compound water is formed.

(AKS 4c, DOK 1) image This equation supports the law of conservation of mass because A. the total number of hydrogen and oxygen atoms in the reactants and products is twelve. B. atoms of the elements hydrogen and oxygen are in the reactants and also in the products. C. the mass of hydrogen and oxygen in the reactants is equal to the mass of the water in the product. D. atoms of the elements hydrogen and oxygen react to form molecules of the compound water.
Chemistry
1 answer:
olga2289 [7]2 years ago
7 0

Answer:

b

Explanation:

. B. atoms of the elements hydrogen and oxygen are in the reactants and also in the productsatoms of the elements

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__MgCl2 +
Anna35 [415]

Answer:

24.5 g of NaCl

Explanation:

We begin from the balanced reaction:

3MgCl₂ +   2Na₃PO₄  →    6NaCl   +  Mg₃(PO₄)₂

If the sodium phosphate is in excess, then the limting reagent is the magnessium chloride.

We convert mass to moles:

20 g . 1mol / 95.2g = 0.210 moles.

3 moles of MgCl₂ can produce 6 moles of NaCl

0.210 moles of salt, may produce (0.210 . 6) /3 = 0.420 moles

Ratio of reactant is twice the product

We convert the moles to mass:

0.420 mol .  58.45 g/mol = 24.5 g

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In order for a solute to dissolve in a solvent, what must be true?
Svetradugi [14.3K]

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3 years ago
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Anuta_ua [19.1K]

Answer:

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