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(a)
Interpretation:
A balanced chemical equation for the reaction between lead(II)nitrate solution and potassium iodide solution to form solid lead(II)iodide and potassium nitrate solution is to be written.
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 amount of substances in a balanced
Following are the steps to determine the moles of a chemical substance when the moles of another chemical substance present in the chemical reaction are given,
Step 1: Write the names and molecular formulas of the substances involved in the chemical reaction.
Step 2: Write the balanced chemical equation by using
Step 3: Determine the molar ratio from the balanced chemical reaction between the chemical substance whose amount is given and the chemical substance whose amount is to be calculated.
Step 4: Use the molar ratio and the given amount to calculate the unknown amount of the other substance.
(b)
Interpretation:
A balanced chemical equation for the reaction between liquid disilicon hexachloride reacts with water to form solid silicon dioxide, hydrogen chloride gas and hydrogen gas is to be written.
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 amount of substances in a balanced chemical reaction are stoichiometrically equivalent to each other.
Following are the steps to determine the moles of a chemical substance when the moles of another chemical substance present in the chemical reaction are given,
Step 1: Write the names and molecular formulas of the substances involved in the chemical reaction.
Step 2: Write the balanced chemical equation by using stoichiometric coefficients.
Step 3: Determine the molar ratio from the balanced chemical reaction between the chemical substance whose amount is given and the chemical substance whose amount is to be calculated.
Step 4: Use the molar ratio and the given amount to calculate the unknown amount of the other substance.
(c)
Interpretation:
A balanced chemical equation for the reaction of nitrogen dioxide bubbled into the water to form nitric acid solution and nitrogen monoxide gas is to be written.
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 amount of substances in a balanced chemical reaction are stoichiometrically equivalent to each other.
Following are the steps to determine the moles of a chemical substance when the moles of another chemical substance present in the chemical reaction are given,
Step 1: Write the names and molecular formulas of the substances involved in the chemical reaction.
Step 2: Write the balanced chemical equation by using stoichiometric coefficients.
Step 3: Determine the molar ratio from the balanced chemical reaction between the chemical substance whose amount is given and the chemical substance whose amount is to be calculated.
Step 4: Use the molar ratio and the given amount to calculate the unknown amount of the other substance.
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Chapter 3 Solutions
Chemistry: The Molecular Nature of Matter and Change
- 18 Question (1 point) Draw the line structure form of the given partially condensed structure in the box provided. :ÖH HC HC H2 ΙΩ Н2 CH2 CH3 CH3 partially condensed formarrow_forwardsomeone else has already submitted the same question on here and it was the incorrect answer.arrow_forwardThe reaction: 2NO2(g) ⇌ N2O4(g) is an exothermic reaction, ΔH=-58.0 kJ/molrxn at 0°C the KP is 58.If the initial partial pressures of both NO2(g) and N2O4(g) are 2.00 atm:A) Is the reaction at equilibrium? If not, what is the value of Q? B) Which direction will the reaction go to reach equilibrium? C) Use an ICE table to find the equilibrium pressures.arrow_forward
- The dissociation of the weak acid, nitrous acid, HNO2, takes place according to the reaction: HNO2 (aq) ⇌ H+(aq) + NO2–(aq) K=7.2 X 10-4 When 1.00 mole of HNO2 is added to 1.00 L of water, the H+ concentration at equilibrium is 0.0265 M.A) Calculate the value of Q if 1.00 L of water is added? B) How will reaction shift if 1.00 L of water is added?arrow_forwardSuppose a certain copolymer elastomeric material “styrene-butadiene rubber”) contains styrene ("S") monomers –(C8H8)– and butadiene ("B") monomers –(C4H6)– and that their numerical ratio S:B = 1:8. What is the mass ratio mS:mB of the two monomers in the material? What is the molecular mass M of a macromolecule of this copolymer with degree of polymerization n = 60,000? Data: AC = 12.01 u, AH = 1.008 u.arrow_forwardLab Questions from Lab: Gravimetric Determination of Calcium as CaC2O4•H2O What is the purpose of the methyl red indicator? Why does a color change to yellow tell you that the reaction is complete? Why is the precipitate rinsed with ice-cold water in step 4? Why not room temperature or hot water? Why is it important that the funnels be placed in a desiccator before weighing (steps 1 and 5)?arrow_forward
- What mass of ethylene glycol, HOCH2CH2OH, Mustbe added to 5.50 kg of water to antifreeze that would work for the car radiator to -10.0 degrees celcius? MM (g/mol): 62.07arrow_forwardWhat is the molarity of a 0.393 m glucose solution if its density is 1.16 g/mL? MM glucose 180.2 g/molarrow_forwardThe rate constant for the decay of a radioactive element is 2.28 × 10⁻³ day⁻¹. What is the half-life of this element in days?arrow_forward
- Handwritten pleasearrow_forwardChoose the best reagents to complete the following reaction. i H A B 1. CH3CH2Na 2. H3O+ 1. CH3CH2MgBr 2. H3O+ 1. CH3MgBr Q C 2. H3O+ 1. H3O+ D 2. CH3MgBr 00 OH Q E CH³MgBrarrow_forwardThe kinetics of a gas phase reaction of the form A → Products results in a rate constant of 0.00781 M/min. For this reaction, the initial concentration of A is 0.501 M. What is the half-life for this reaction?arrow_forward
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