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lora16 [44]
3 years ago
12

If two metals both have the same color, have similar densities, and are about the same size, but one is shiny and the other is d

ull, they can be separated based on the physical property known as what?
Chemistry
1 answer:
Papessa [141]3 years ago
7 0
<span>If two metals both have the same color, have similar densities, and are about the same size, but one is shiny and the other is dull, they can be separated based on the lustrous physical property of a metal. Lustrous is the property of the metal to shine/gleam gently because of its particle arrangement of atoms. </span>
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When the equation 
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The least whole number coefficient for HNO₃ is 6

Explanation:

The chemical equation above is the reaction between calcium orthophosphate and nitric acid.

To balance a chemical equation, we have to consider law of conservation of matter which states that matter can neither be created nor destroyed.

What this law implies is that, whatever we have at the reactant side must be equal to whatever is obtainable at the product side.

The above equation is

Ca₃(PO₄)₂ + HNO₃ → Ca(NO₃)₂ + H₃PO₄

To balance the equation, we'll have to check the number of atoms at each side and possibly balance the equation with the number of moles.

The balanced equation is

Ca₃(PO₄)₂ + 6HNO₃ → 3Ca(NO₃)₂ + 2H₃PO₄

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The least number coefficient for HNO₃ is 6

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What are complementary bases?
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In the equation:
Ksenya-84 [330]

Answer:

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First we <u>convert 4 moles of O₂ into moles of H₂</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

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Finally we <u>convert 8 moles of H₂ into grams</u>, using <em>its molar mass</em>:

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Thus, the correct answer is option B).

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