Determine the molar mass of rust, Fe2O3. Provide an answer to two decimal places.

Q: Suppose you measure out 0.0132 moles of ammonium sulfate on the balance. If the weigh boat…

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Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: mass

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Q: You take 4 tablets of aspirin (a compound that contains carbon, hydrogen, and oxygen) and perform a…

A: The weight of each aspirin tablet = 5.51 x 10-4 lbs Convert the mass of a tablet into grams using…

Q: One molecule of a compound weighs 2.03 × 10‒22g. What is its molar mass?

A: Molar mass is the mass of 1 mole of the substance or 6.022×10²³ particles, expressed in grams.

Q: Consider the following balanced equation. 3 Ag(s) + 4 HNO3(aq) → 3 AgNO3(aq) + NO(g) + 2 H2O(l) A…

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Q: Carbon dioxide emissions associated with a one-night stay in a hotel room are calculated at 28.98 kg…

A: The dimensional analysis is the method in which the set of units is used to form the equation. In…

Q: Determine the percentage composition by mass of each of the elements ( magnessium, phosphorus and…

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Q: The reduction of iron(III) oxide to iron during steel-making can be summarized by this sequence of…

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Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +  H2(g) 4 HSiCl3(l)  →  SiH4(g)  +  3 SiCl4(l)  2.42 moles of…

Q: This equation models how pure silver (Ag) is extracted from ores of AgK(CN)2 (potassium…

A: We have to calculate how many atoms of pure Zn are need in the production process to create a pure…

Q: Emissions from the burning of fossil fuels are often reported as gigatons ( Gt ) of carbon. In a…

A: Given that : Amount of carbon emitted by China = 2.9 Gt Amount of carbon emitted by United States =…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: 717.7 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen.…

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Q: A certain copper ore contains 2.32% of Cu2S by mass, and the remainder of the ore contains no…

A: Mass percent or weight percent of a substance is the mass of the component by the mass of the…

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

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Q: Balance the following chemical reaction using the combination of a smallest possible set of whole…

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Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: 1 mole of any substance have 1 Avagadro number molecules  1 Avagadro number molecules = 6.023*1023…

Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

A: The objective of the question is to calculate the heat of reaction (ΔHrxn) when a certain amount of…

Q: Lithium metal has an atomic radius of 152 pm. The molar mass of lithium is 6.94 g/mol and Avogadro`s…

A: Atomic radius = 152 pm = 152 × 10-10 cm  Avadagro constant = 6.022 × 1023  per mol  Molar mass of…

Q: What is the mass in grams of 9.25 x 10^24 molecules of CO2? Write the answer in decimal form.

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Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: Balance each of the following chemical equations _Na2S(aq)+ _Cu(NO3)2(aq)→_NaNO3(aq)+_CuS(s)…

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Q: What is the molar mass of magnesium chloride, MgCl₂? Express your answer to four significant figures…

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Q: When 32.6 g of Cu metal are reacted with excess AgNO3 (169.87 g/mol), what mass, in g, of Ag metal…

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Q: A chemist adds 110.0 of a 1.63 molcalcium bromide (CaBr 2 ) solution to a reaction flask Calculate…

A: I assume what the chemist added is: 110.0 mL of a 1.63 mol/L (or 1.63 M) calcium bromide (CaBr2)…

Q: 5. Answer the following question regarding stoichiometry: How many grams of malachite, CuCO,Cu(OH)2…

A: From the given data, mass of NaCO3 = 10.3 g  mass of CuSO4.5H2O = 2.05 g  Also,  molar mass of NaCO3…

Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: Given data, Moles of Si = 2.51moles Given equations: Si(s)  +  3 HCl(g)  →HSiCl3(l)  +  H2(g)…

Q: Balance the following chemical reaction, be sure to include “1” in the blank for any compounds with…

A: The unbalanced chemical equation is given as: Fe2O3(s) + CO(g) → Fe(l) + CO2(g). In this equation,…

Q: [References] nelling salts," which are used to revive someone who has fainted, typically contain…

A: The question is based on the concept of Reaction Stoichiometry.   We have  to calculate the mass of…

Q: 2 NaOH(aq) + H2C2O4 = 2H2O(s) Na2C2O4(aq) + 4 H2O(l)  Calculate the mass of H2C2O4.2H2O required in…

A: Interpretation - To calculate mass of H2C2O4.2H2O required in the standardization.    Introduction-…

Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

A: The given chemical equation is  Ca3(PO4)2 (s) + SiO2(s)+C(s) →CaSiO3(s) + P4(s) + CO(g)

Q: 14 The reduction of iron(III) oxide to iron during steel-making can be summarized by this sequence…

A: Answer of the question given below,

Q: Given the following equation: 8 Fe + Sg → 8 Fes How many moles of iron is needed to react with 16.0…

A: The given reaction :  8 Fe + S8 = 8FeS In this reaction 8 moles of iron is reacting with 1 mole of…

Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

A: The balanced reaction taking place is given as,

Q: what mass of anhydrous magnesium sulfate will remain?

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Q: (FeS2(s)), which reacts with molecular oxygen to produce Fe2O3(s) and SO2(g). Write the balanced…

A: Balancing is done to make atom of all the elements equal in reactant and product side.

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.