Determine the mass of oxygen in a 9.9-g sample of Al2(SO4)3. Express your answer to two significant figures and include the appropriate units HÅ m(0) = Value Units ?

Q: The chemical formula for calcium hydroxide is: Ca(ОН), Calculate the molar mass of calcium…

A: Given :- chemical formula of calcium hydroxide = Ca(OH)2  To calculate :- its molar mass (g.mol-1)

Q: The balanced equation for the combustion of butane, CAH10, is shown below. For your convenience, the…

A: Given  Volume of Butane = 2 Liter  Volume of Oxygen =?

Q: Be sure to answer all parts. Ammonia is produced by the reaction of nitrogen and hydrogen according…

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Q: A major component of gasoline is octane (CH8). When octane is burned in air, it chemically reacts…

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

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Q: The mole is a counting number that allows scientists todescribe how individual molecules and atoms…

A: Molecular weight of Cu(OH)2 = 97.562 gm/mol  Weight of Cu(OH)2 = 23.45 gm  Moles = weight/mol. wt. =…

Q: Calculate the number of oxygen molecules required to produce 16.1 g KHCO3. Express your answer in…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: A chemist adds 140.0 mL of a 0.514M aluminum sulfate (Al, (SO₂),) & solution to a reaction flask.…

A: Millimoles of aluminium sulfate =?

Q: a student finds that they have 0.2929 g of NH4Cl, 0.6234 g of NaCl, and 1.3841 g of SiO2. Calculate…

A: Given Mass of NH4Cl =0.2929 g Mass of NaCl =0.6234 g Mass of  SiO2 = 1.3841g Initial mass of mixture…

Q: utions of sulfuric acid and lead (II) acetate react to for d. If 15.3 g of sulfuric acid and 13.1 g…

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Q: Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and…

A: Percentage yield of a compound can be calculated using following formula: Percentage yield =…

Q: At 25°C methanol (CH4O) has a density of ~0.792 g/mL. If a reaction requires the chemist to use…

A: molar mass of methanol = 12.011 amu + 4*1.008 amu +15.999 amu =32.042 amu mass of methanol =644.50…

Q: Consider the reaction of solid PbO and gaseous NH3 to form solid Pb, nitrogen gas, and water vapor.…

A: The balanced chemical reaction of solid PbO and gaseous NH3 to formsolid Pb, nitrogen gas and water…

Q: If 101.10 g of limestone decomposes by heat to give 85.10 g of solid calcium oxide and carbon…

A:

Q: 32.854 cm³ of solid magnesium reacts with 7.42760 x 1023 carbon dioxide gas molecules, to make solid…

A: Volume of Mg = 32.854 cm3  Number of molecules of CO2 = 7.42760 × 1023 molecule

Q: For this equation, (NH4), Cr2 O7(s) Cr2O3 (s) + N2 (g) + 4H2O(g) an engineer has to calculate the…

A: Given: The reaction is as follows: (NH4)2Cr2O7(s)→Cr2O3(s)+N2(g)+4H2O(g) The given mass of…

Q: O Chemical Reactions Using molarity to find solute mass and solution volume 0/3 Bi A chemist adds…

A: Step 1: Calculation of moles of sodium thiosulfateGiven,molarity of sodium thiosulfate solution =…

Q: Hydrogen peroxide decomposes as shown below: If a 5.951 g sample of hydrogen peroxide solution…

A:

Q: The low-grade iron ore taconite, which contains Fe3O4, is concentrated and made into pellets for…

A: Given : Mass of ore used = 1 ton = 1 X 106 g                                                (since 1…

Q: Ammonium phosphate ((NH4 PO) is an important ingredient in many fertilizers. It can be made by…

A: Ammonium phosphate can be prepared by reacting phosphoric acid with ammonia as; H3PO4 + NH3 →…

Q: A student started with 1.525 grams of copper (II) oxide and produced 3.500 g of copper (II) sulfate.…

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Q: Aqueous sulfuric acid (H₂SO4) will react with solid sodium hydroxide (NaOH) to produce aqueous…

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Q: The balanced equation below describes one method of making AlCl. 5.40 grams of Al and 5.33 grams of…

A: Aluminum reacts with chlorine to form aluminum chloride. The equation for the balanced chemical…

Q: A chemist has 4.773 grams of a mixture of cesium fluoride and cesium iodide which she plans to react…

A:

Q: A chemist adds 390.0 mL of a 0.149M potassium permanganate (KMnO4) solution to a reaction flask.…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

Q: How many grams of chlorine gas must react to give 3.32 g of BiCl3? 2Bi(s)+3Cl2(g)→2BiCl 3(s)…

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

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Q: N₁(9)+3H₂(9)2NH,(9) At the temperature the engineer picks, the equilibrium constant K, for this…

A: The direction in which the reaction proceeds to reach equilibrium can be predicted by determining…

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

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Q: A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands…

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: 9. If 44.0 g of O2 is mixed with 44.0 g of H2 and the mixture is ignited, what is the maximum mass…

A: First we find mole of each reactant by using the formula:-  Mole = mass÷ molar mass

Q: (CH;(CH,),CH;) will react with gaseous oxygen (02) to produce gaseous carbon dioxide (CO,) and…

A: Consider the given information is as follows; Mass of butane = 3.49 g Mass of oxygen = 23. g…

Q: A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric…

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Q: A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands…

A: (1.0 mol/L) (10-3L/1 ml) (52.27 g/mol)  -> 1 L = 103 ml  -> molar mass = 52.27 g/mol

Q: For the reaction whose balanced equation is as follows, find how many grams of zinc phosphate will…

A: The balanced chemical equation for the reaction is given as:  3 ZnCl2 + 2 (NH4)3PO4 → Zn3(PO4)2 + 6…

Q: A student finds that they have 0.2545 g of NH4Cl, 1.1502 g of NaCl, and 1.0181 g of SiO2. Calculate…

A: Given  mass of NH4Cl = 0.2545g mass of NaCl = 1.1502 g mass of  SiO2 = 1.0181 g Initial mass if…

Q: In the "Methodé Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine.…

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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: 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: Sulfuric acid dissolves aluminum metal according to the following reaction: 2A1(s) + 3H,SO,(aq) →…

A: 2 Al(s)    +     3 H2SO4 (aq)     -->   Al2(SO4)3 (aq)…

Q: Please help me, and double and triple check your answers previous tutors got questions wrong

A: Number of moles can be calculated as follows:

Q: 2. A mixture of KCr(SO4)2 and its hydrate KCr(SO4)2-12H₂O has a mass of 1.2843 g. After heating to…

A: Given,mass of mixture ( KCr(SO4)2 + KCr(SO4)2 . 12 H2O ) = 1.2843 gmass of mixture after heating =…

Q: Solid ammonium chloride,NH4Cl, is formed by the reaction of gaseous ammonia,NH3, and hydrogen…

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Q: 6 CO2 (g) + 6 H20 CH1206 (s) +6 02 (g) How many grams of carbon dioxide would be required to produce…

A: The balanced equation for the reaction is given below : We have to calculate the mass of carbon…

Q: Acid rain is caused in part by burning coal that contains sulfur impurities. The sulfur is converted…

A: The mass percentage of sulfur in the coal is = 1.90 % The mass of coal is = 1000 kg The mass of…

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.