The Hall process for the production of aluminum involves the reaction of aluminum oxide with elemental carbon to give aluminum metal and carbon monoxide . If the yield of this reaction is 82 % and aluminum ore is 71 % by mass aluminum oxide , what mass of aluminum ore must be mined in order to produce 1.0 x 10 kg ( 1 metric ton ) of aluminum metal by the Hall process ? Select one : a . 1.6 x 10 kg OOO b . 1.8 x 10 kg c . 1.1 . 10² kg d . 2.2 x 10 kg e . 3.3 * 10 kg

Q: Silicon carbide, SiC, is used as an abrasive for many industrial processes. If you want to produce…

A: Given-> Weight of SiC = 1.00 kg = 1000 gm (1 kg= 1000g)

Q: Polychlorinated biphenyl (PCBs) are environmental contaminants composed of carbon, hydrogen, and…

A:

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+OX2⟶2MgO   What mass, in…

A: The balanced reaction taking place is given as, => 2 Mg + O2 → 2 MgO Given: Mass of Mg taken =…

Q: Antimony is alloyed with lead to increase the rigidity of components used in the construction of…

A:

Q: The calcium content in a 0.4367-g sample of phosphate rock was determined by first dissolving the…

A: Here we have to determine mass percentage of calcium present in 0.4367 gram phosphate rock  if all…

Q: A sample of an iron alloy contains 90.2 g Fe, 2.15 g C, and 1.01 g Cr. Calculate the percent by mass…

A: Total mass of the alloy = mass of Fe + mass of C + mass of Cr = 90.2 + 2.15 + 1.01 = 93.36 g

Q: The thermite reaction, Fe2O3 + Al → Al2O3 + Fe produces so much heat that the Fe product melts. a.…

A: a) Given :-  The given thermite reaction is Fe2O3 + Al → Al2O3 + Fe…

Q: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,…

A: The molar mass of Fe is 55.85 g/mol. The molar mass of Al is 26.98 g/mol. The molar mass of Fe2O3 is…

Q: Hexane is a colourless liquid with a characteristic smell that reacts with chlorine gas in the…

A: Hexane is a colourless liquid with a characteristic smell that reacts with chlorine gas in the…

Q: Use your knowledge of chemical reactions to identify the type of chemical reaction, predict the…

A: The chemical reaction is the representation of an equation that involves the chemical symbols of all…

Q: To determine the amount of platinum in an alloy, a 8.565 g8.565 g sample of an alloy containing…

A:

Q: 22. What mass of carbon monoxide is produced from 50.0 liters of carbon dioxide? CO2 + CE CÓ

A: Please note here we are not given with any specific temperature and pressure so we can assume STP.We…

Q: 1. Metals react ith oxygen gas to produce oxides with the general formula Mx O y. Write a balanced…

A:

Q: Cryolite, Na, AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: The first step in this problem is to identify the limiting reactant, which is the reactant that will…

Q: A chemical plant uses electrical energy to decompose aqueous solutions of NaCl to give Cl2, H2, and…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: Consider the reaction of solid P4 and chlorine gas to form gaseous phosphorus trichloride. a) Write…

A:

Q: Write a balanced reaction for the reaction of nitrate ions with copper metal in aqueous solution,…

A: Given: nitrate ion react with copper metal.  To find : Balanced equation for the given reaction.…

Q: What mass, in grams, of MgO can be produced

A: Number of moles = mass/molar mass  First we find out the limiting reactant and then after applying…

Q: 55. Although copper can be found in its elemental form in nature, it is often extracted from…

A: •Given:- Copper present elemental form. •It can be also extracted from its compound carbonate or…

Q: b The Ostwald process for the commercial production of nitric acid from ammonia and oxygen involves…

A: Given reactions.

Q: A 5.87-gram sample of powdered nickel is first placed into a crucible; the nickel and crucible are…

A: We have to Formula for compound .

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…

A: Number of moles of Mg and O2 are calculated as follows: No. of moles of Mg=massmolar mass=1.41…

Q: Iodine is made by the following reaction 2 NaIO3(aq) + 5 NaHSO3(aq) → 3 NaHSO4 (aq) + 2 Na2SO4 (aq)…

A: Given , Reaction : 2NaIO3(aq) +5 NaHSO3(aq) → 3NaHSO4(aq) + 2Na2SO4(aq) +H2O(I) +I2(aq)

Q: Carborundum (silicon carbide), SiC, is a very hard material used as an abrasive on sandpaper and in…

A:

Q: The reaction of solid calcium fluoride and sulfuric acid produces calcium sulfate solids and gaseous…

A: Given the mass of the required 60 wt% HF = 1 metric ton or 1000 Kg  Mass of HF in the required 1…

Q: Aluminum and iodine are both ground into a fine powder and combined in a heatproof dish where a…

A: Aluminum + iodine gives Al2I6 Al + I2 --> Al2I6 In next step we will balance this reaction.

Q: Enter your answer in the provided box. One of the reactions that occurs in a blast furnace, in which…

A:

Q: and assuming concrete is 100% by volume CaO, how much CO2 was released producing the concrete used…

A:

Q: 17. Given the reaction Ss(g) + 802 8SO2(g), the number of moles of sulfur required to form one mole…

A: In the given reaction, one mole of S reacts with eight moles of oxygen to form eight moles of sulfur…

Q: When 4.68 g of iron is reacted with excess oxygen, 6.70 g of product is obtained. Determine the…

A: A compound contains 40% carbon, 6.7% hydrogen, and 53.3%oxygen. 100 g of the compound will contain…

Q: Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese…

A: Answer:Limiting reagent is the reactant that is exhausted first in the chemical reaction and decides…

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+OX2⟶2MgO   What mass, in…

A: Mass of Mg = 1.92 g Mass of O2 = 2.66 g Mass of MgO = ?

Q: Write the balanced chemical equation for the reaction of magnesium metal with oxygen gas to form…

A: Mass of Mg = 10.0 g Moles of Mg = 10.0g/24.305g/mol = 0.411 mol Mass of Oxygen = 10.0g Moles of…

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: Given Chemical Reaction: 2NH3 + 3O2 +2CH4 -------> 2HCN +6H2O. To solve this problem we will be…

Q: Lithium faces an increasing demand since the alkali metal is a key component in a lithium- ion…

A: Given  Number of moles of lithium = 5.40 mol we have to calculate the weight of lithium. Molar mass…

Q: Ammonium perchlorate (NH4ClO4 or AP) is the principal component of solid rocket propellant. Suppose…

A: Given: Mass of NH4ClO4 = 63.3 g Molar mass of NH4ClO4 = 117.49 g/mol Molar mass of H2O = 18.01528…

Q: Copper metal heated with sulfur produces solid copper(ii) sulfide. Write the balanced equation and…

A: The reactants given are copper metal and sulfur to produce copper (II) sulfide.

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.