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Concept explainers
Interpretation:
The mass of aluminum that reacts with silver sulfide to form
Concept introduction:
In a balanced chemical equation, the total mass of reactants and products are equal in a balanced chemical equation, thus, it obeyed the law of conservation of mass. Also, the amounts of substances in a balanced
Following are the steps to calculate the mass of a chemical substance when the mass of other substance present in the chemical reaction is given.
Step 1: Divide the given mass of the substance by its molar mass to calculate the moles of that compound. The expression to calculate the amount of a chemical substance in moles is as follows:
Step 2: Determine the molar ratio between the substance whose mass is given and the substance whose amount is to be calculated from the balanced chemical equation. Multiply the calculated moles in step 1 by the molar ratio to obtain the unknown amount of the substance.
Step 3: Multiply the amount calculated in step 2 by the molar mass of that substance to calculate the mass. The expression to calculate the mass from the moles of a substance is as follows:
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Chapter 3 Solutions
Student Study Guide for Silberberg Chemistry: The Molecular Nature of Matter and Change
- 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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