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masya89 [10]
3 years ago
6

In the following reaction, what coefficient will be written before the potassium nitrate (KNO3 ) to balance the chemical equatio

n? (1 point) _____ K2CrO4 + _____ Pb(NO3)2 _____ KNO3 + _____ PbCrO4
Chemistry
1 answer:
puteri [66]3 years ago
4 0
Hey there:

<span>Balanced chemical equation:
</span>
<span>1 K2CrO4 + 1 Pb(NO3)2 = 2 KNO3 + 1 PbCrO<span>4
</span></span>
<span>Coefficients :  1 , 1 , 2 , 1
</span>
hope this helps!
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In the reaction A+B → C + D, what are the reactants?
Inga [223]

Answer:

A. A and B

Explanation:

The reactants in this reaction is A and B;

 Reaction:

      A + B → C + D

In a chemical reaction, the left hand side is made up of the reactants.

On the right hand side, we have the products

For the example given;

   A and B are the reactants

   C and D are the products

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Calculate the number of liters occupied at STP. A. 1.7 mol H2. B. 1.8 x10(-2) mol N2. C. 2.5 x10(2) mol O2
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Ideal Gas equation will be used assuming all the gases are acting Ideally,

                                                 P V  =  n R T
Solving for V,
                                                 V  =  n R T / P    ----- (1)

Standard Temperature  = 273 K

Standart Pressure  =  1 atm

Gas Constant R  =  0.08206 atm.L.mol⁻¹.K⁻¹

1) For 1.7 mole of H₂;
                                   
Putting values in eq.1,

                   V  =  (1.7 mol × 0.08206 atm.L.mol⁻¹.K⁻¹ × 273 K) ÷ 1 atm

                   V  =  38.08 L

2) For 1.8 ×10⁻² mole of N₂;
                                    
Putting values in eq.1,

                   V  =  (1.8 ×10⁻² mol × 0.08206 atm.L.mol⁻¹.K⁻¹ × 273 K) ÷ 1 atm

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3) For 2.5 ×10² mole of O₂;
                                    
Putting values in eq.1,

                   V  =  (2.5 ×10² mol × 0.08206 atm.L.mol⁻¹.K⁻¹ × 273 K) ÷ 1 atm

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4 years ago
2C4H10 + 13 02 -- 8 CO2 + 10H20
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Answer:

Option 1. 0.55 mol of C₄H₁₀

Explanation:

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