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kodGreya [7K]
2 years ago
13

Balance the following equations 1.Na+HCI=NaCI+H22.Mg+O2=MgO​

Chemistry
1 answer:
liberstina [14]2 years ago
7 0

Answer:

1. 2Na + 2HCl = 2NaCl =H2

2. 2Mg + O2 = 2MgO

Explanation:

make sure that the number of atoms of each element is the same on each side of the equation  

1. 2Na + 2HCl = 2NaCl =H2

<em><u>on LHS of equation,</u></em>

Na = 2

H = 2

Cl =2

<em><u>On RHS of equation, </u></em>

Na=2

H= 2

Cl =2

2. 2Mg + O2 = 2MgO

<em><u>on LHS of equation,</u></em>

Mg = 2

O2 = 2

<em><u>On RHS of equation, </u></em>

Mg = 2

O2 = 2

<em><u /></em>

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3.00 L of a gas is collected at 35.0°C and 705.0 mmHg. What is the volume at STP?
makvit [3.9K]

Answer:

2.47L

Explanation:

Using the combined gas law equation as follows:

P1V1/T1= P2V2/T2

Where;

P1 = initial pressure (mmHg)

P2 = final pressure (mmHg)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

P1 = 705mmHg

P2 = 760mmHg (STP)

V1 = 3.00L

V2 = ?

T1 = 35°C = 35 + 273 = 308K

T2 = 273K (STP)

Using P1V1/T1= P2V2/T2

705 × 3/308 = 760 × V2/273

2115/308 = 760V2/273

Cross multiply

308 × 760V2 = 2115 × 273

234,080V2 = 577,395

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2 years ago
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You made hypochlorous acid (HOCI) by mixing bleach (NaOCI) with:
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The chemical equation for the reaction of sodium hypochlorite and water follows:

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By Stoichiometry of the reaction:

1 mole of sodium hypochlorite reacts with 1 mole of water to produce 1 mole of hypochlorous acid and 1 mole of sodium hydroxide.

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