3. Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on sandpaper and in other applications. It is prepared by the reaction of pure sand, SiO2, with carbon at high temperature. Carbon monoxide, CO, is the other product of this reaction. Write the balanced equation for the reaction, and calculate how much SiO₂ is required to produce 3.00 kg of SiC.
3. Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on sandpaper and in other applications. It is prepared by the reaction of pure sand, SiO2, with carbon at high temperature. Carbon monoxide, CO, is the other product of this reaction. Write the balanced equation for the reaction, and calculate how much SiO₂ is required to produce 3.00 kg of SiC.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Question
Answer only number 3
![II. Reaction Stoichiometry
1. Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCI according to
the following equation:
2Ga + 6HCI→→ 2GaCl₂ + 3H₂
(a) Outline the steps necessary to determine the number of moles and mass of gallium
chloride.
(b) Perform the calculations outlined.
2. Silver is often extracted from ores such as K[Ag(CN)₂] and then recovered by the reaction
2K[Ag(CN)₂] (aq) + Zn (s) 2Ag (s) + Zn(CN)2 (aq) + 2KCN (aq)
(a) How many molecules of Zn(CN)2 are produced by the reaction of 35.27 g of
K[Ag(CN)₂]?
(b) What mass of Zn(CN)₂ is produced?
3. Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on sandpaper
and in other applications. It is prepared by the reaction of pure sand, SiO2, with carbon at high
temperature. Carbon monoxide, CO, is the other product of this reaction. Write the balanced
equation for the reaction, and calculate how much SiO₂ is required to produce 3.00 kg of SiC.
4. Urea, CO(NH2)2, is manufactured on a large scale for use in producing urea-formaldehyde
plastics and as a fertilizer. What is the maximum mass of urea that can be manufactured from
the CO₂ produced by combustion of 1.00 x 10³ kg of carbon followed by the reaction?
CO₂ (g) + 2NH3(g) CO (NHz)z (s) + H2O (I)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffe1f1044-217d-424a-bf90-9ed21be86bca%2F895e8484-bcfb-4308-b2d2-5cd92d678a03%2Fbvnzc56_processed.jpeg&w=3840&q=75)
Transcribed Image Text:II. Reaction Stoichiometry
1. Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCI according to
the following equation:
2Ga + 6HCI→→ 2GaCl₂ + 3H₂
(a) Outline the steps necessary to determine the number of moles and mass of gallium
chloride.
(b) Perform the calculations outlined.
2. Silver is often extracted from ores such as K[Ag(CN)₂] and then recovered by the reaction
2K[Ag(CN)₂] (aq) + Zn (s) 2Ag (s) + Zn(CN)2 (aq) + 2KCN (aq)
(a) How many molecules of Zn(CN)2 are produced by the reaction of 35.27 g of
K[Ag(CN)₂]?
(b) What mass of Zn(CN)₂ is produced?
3. Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on sandpaper
and in other applications. It is prepared by the reaction of pure sand, SiO2, with carbon at high
temperature. Carbon monoxide, CO, is the other product of this reaction. Write the balanced
equation for the reaction, and calculate how much SiO₂ is required to produce 3.00 kg of SiC.
4. Urea, CO(NH2)2, is manufactured on a large scale for use in producing urea-formaldehyde
plastics and as a fertilizer. What is the maximum mass of urea that can be manufactured from
the CO₂ produced by combustion of 1.00 x 10³ kg of carbon followed by the reaction?
CO₂ (g) + 2NH3(g) CO (NHz)z (s) + H2O (I)
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