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Concept explainers
Balance the following equations:
(a)
(b)
(c)
![Check Mark](/static/check-mark.png)
(a)
Interpretation:
The given chemical equation should be balanced.
Concept introduction:
The chemical reaction is said to be balanced if there are same number of constituent atoms are present on both sides of the reaction arrow. A balanced chemical reaction satisfies the law of conservation of mass.
Answer to Problem 48QAP
Explanation of Solution
The given chemical reaction is as follows:
The number of carbon atoms on left hand side is 6 and that on the right hand side is 1 thus, give coefficient 6 to
The number hydrogen atoms on left hand side is 12 and that on the right hand side is 2 thus, give coefficient 6 to
Now, number of oxygen atoms on left hand side of the reaction arrow is 8 and that on the right hand side is 18 thus, give coefficient 6 to
Thus, the balanced chemical reaction will be:
![Check Mark](/static/check-mark.png)
(b)
Interpretation:
The given chemical equation should be balanced.
Concept introduction:
The chemical reaction is said to be balanced if there are same number of constituent atoms are present on both sides of the reaction arrow. A balanced chemical reaction satisfies the law of conservation of mass.
Answer to Problem 48QAP
Explanation of Solution
The given chemical reaction is as follows:
Give coefficient 4 to HF to balance the number of F atoms.
Now, give coefficient 2 to
The number of oxygen atoms on left and right hand side of the reaction arrow is same. Thus, the balanced chemical reaction will be:
![Check Mark](/static/check-mark.png)
(c)
Interpretation:
The given chemical equation should be balanced.
Concept introduction:
The chemical reaction is said to be balanced if there are same number of constituent atoms are present on both sides of the reaction arrow. A balanced chemical reaction satisfies the law of conservation of mass.
Answer to Problem 48QAP
Explanation of Solution
The given reaction is as follows:
The number of sulfur atom is already balanced. To balance the number of sodium atom, give coefficient 2 to NaCl thus,
Now, to balance the number of chlorine atoms, give coefficient 2 to HCl thus,
The number of oxygen atom on left and side is 5 and that on right hand side is 4 thus, give coefficient ½ to
Or,
Thus, the balanced chemical reaction is as follows:
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Chapter 3 Solutions
Chemistry: Principles and Reactions
- Challenging samples: 1. Metal complexes with low volatility are often difficult to analyze when performing atomic absorption measurements because the atomization efficiency is reduced to unacceptably low levels. Devise a strategy or strategies for eliminating the problem of a non-volatile metal complex? Explain how you would do that. 2. Devise a strategy to overcome unwanted ionization of the analyte? Explain what it would be. 3. Devise a general method that can be used to account for the presence of unknown matrix effects.arrow_forwardDon't used hand raitingarrow_forwardDon't used hand raiting don't used Ai solutionarrow_forward
- Homework: Atomic Structure This homework is due at the beginning of class next lecture period and is worth 6 points. Please place the number of protons and neutrons in the nucleus and then put the number of electrons in the correct shell. Also give the correct atomic mass. Also, state if the atom is an ion (cation or anion). H* 1. Number of protons Number of electrons Number of neutrons Atomic mass 2. 26 13AI +++ Number of protons Number of neutrons Number of electrons Atomic massarrow_forwardDon't used hand raitingarrow_forwardI need help working this problem out step by step, I was trying to use my example from the txt book but all I know how to do is set it up. I need to be shown step by step as I am a visual learner. Please help me.arrow_forward
- Don't used hand raitingarrow_forwardDon't used Ai solution and don't used hand raitingarrow_forward& Calculate the molar enthalpy of combustion (A combH) of 1.80 g of pyruvic acid (CH3COCOOH; 88.1 g mol-1) at 37 °C when they are combusted in a calorimeter at constant volume with a calorimeter constant = 1.62 kJ °C-1 and the temperature rose by 1.55 °C. Given: R = 8.314 J mol −1 °C-1 and the combustion reaction: AN C3H4O3 + 2.502(g) → 3CO2(g) + 2H2O(l)arrow_forward
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