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Paha777 [63]
3 years ago
15

Robert places a piece of magnesium metal (Mg) into a test tube of hydrochloric acid (HCl). The magnesium begins to bubble and fi

zz, releasing hydrogen gas (H2) and the test tube gets warm. Which equation represents the reaction Robert observed?
Chemistry
2 answers:
olchik [2.2K]3 years ago
8 0

Answer:

See below.

Explanation:

The balanced equation is

Mg(s) + 2HCl ---->   MgCl2 + H2(g)

ohaa [14]3 years ago
5 0

Answer:

Mg_{(s)} + 2HCl_{(aq)} ---> MgCl_2_{(aq)} + H_2_{(g)}

Explanation:

The reaction is a simple replacement reaction in which hydrogen gas is liberated when it gets replaced by Magnesium in aqueous solution of hydrochloric acid.

<em>1 mole of Mg reacts with 2 moles of HCl to give 1 mole MgCl_2 and 1 mole H_2 gas. The balanced equation for the reaction Robert observed is as follows:</em>

 Mg_{(s)} + 2HCl_{(aq)} ---> MgCl_2_{(aq)} + H_2_{(g)}

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How many moles of water are produced if 5.43 mol PbO2 are consumed
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It has to be understood that 2 moles of oxygen are there in each mole of PbO2. Then it has to be calculated for 2 moles of oxygen.

Amount of oxygen = 2 * 5.43 moles
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Now it is also a fact that each mole of H2O contains 1 mole of oxygen. Then it can be easily concluded that 10.86 moles of water will be produced. I hope the procedure is clear enough for you to understand.
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What is the smallest number of products in a decomposition reaction?
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Organic compounds are distinguished by molecules that contain ________ bonded to other elements.
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6 0
3 years ago
1: Write balanced complete ionic equation for
monitta

Answer 1 : The balanced complete ionic equation will be,

NaOH(aq)+HNO_3(aq)\rightarrow H_2O(l)+NaNO_3(aq)

Na^+(aq)+OH^-(aq)+H^+(aq)+NO_3^-(aq)\rightarrow H_2O(l)+Na^+(aq)+NO_3^-(aq)

By removing the spectator ion in this equation, we get the balanced ionic equation.

OH^-(aq)+H^+(aq)\rightarrow H_2O(l)

Answer 2 : The balanced net ionic equation will be,

2Na_3PO_4(aq)+3NiCl_2(aq)\rightarrow Ni_3(PO_4)_2(s)+6NaCl(aq)

6Na^+(aq)+2PO_4^{3-}(aq)+3Ni^+(aq)+6Cl^-(aq)\rightarrow Ni_3(PO_4)_2(s)+6Na^+(aq)+6Cl^-(aq)

By removing the spectator ion in this equation, we get the balanced ionic equation.

2PO_4^{3-}(aq)+3Ni^+(aq)\rightarrow Ni_3(PO_4)_2(s)

Answer 3 : The balanced net ionic equation will be,

2Na_3PO_4(aq)+3NiCl_2(aq)\rightarrow Ni_3(PO_4)_2(s)+6NaCl(aq)

6Na^+(aq)+2PO_4^{3-}(aq)+3Ni^+(aq)+6Cl^-(aq)\rightarrow Ni_3(PO_4)_2(s)+6Na^+(aq)+6Cl^-(aq)

By removing the spectator ion in this equation, we get the balanced ionic equation.

2PO_4^{3-}(aq)+3Ni^+(aq)\rightarrow Ni_3(PO_4)_2(s)

Balanced equations : Balanced equations are the equations in which the number of individual elements present on the reactant side must be equal to the number of individual elements present on the product side.

Spectator ions : It is defined as the ions which do not participate in the chemical reaction. These ions exists in the same form on both the sides of the reaction.

7 0
3 years ago
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