When 2.15 g of sodium carbonate hydrate is heated, 1.35 g of water is lost. In which option are I and II respectively correct, with the percentage of water in the hydrate (I) and the moles of the crystal water contained in the hydrate (II)? (dH2O = 1 g / mL)

Q: In the laboratory you are given the task of separating Ag* and Ba2* ions in aqueous solution. For…

A: Ag+ and Ba2+ ions  can be separated by adding a reagent if only one them form precipitate .…

Q: What is the mass of the solute (in grams) in 165 mL of 2.2×10–5 M H2SO4, a sample of acid rain?

A:

Q: If solutions of Na2SO4 and Ca(NO3)2 were mixed, would a solid be expected to form? O a. yes O b. no

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Q: What volume of 0.333 M Al(NO3)3 is needed to obtain 26.7 g of Al(NO3)3?

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Q: In a car engine, gasoline (represented by C₈H₁₈) does notburn completely, and some CO, a toxic…

A: (a)

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: The density of a 7.50% solution of ammonium sulfate, (NH 4) 250 4, is 1.04 g/mL. What mass of (NH 4)…

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Q: A fertilizer railroad car carrying 34,300 gallons of commercialaqueous ammonia (30% ammonia by…

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Q: Potassium fluoride is used for frosting glass. Calculate the molarity of a solution prepared by…

A: Given data:

Q: What is the molarity of a barium chloride solution prepared by dissolving 2.50 g of BaCl2 x 2H2O in…

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Q: A main-group element E in period 5 forms the ionic compounds EBr2 and EO. Identify element E? Zr…

A:

Q: What is the net ionic equation of the reaction of MgCl2MgCl2 with NaOHNaOH?     What is the net…

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Q: What is the mass in grams of carbon dioxide that would be required to react with 15.0 g of LIOH in…

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Q: Use the solubility rules for ionic compounds to explain why milk of magnesia, which contains Mg(OH)…

A: Suspension is the one in which solid particles are dispersed in liquids. It is a heterogeneous…

Q: The fat stored in a camel’s hump is a source of both energy andwater. Calculate the mass of H2O…

A: The reaction taking place is, Number of moles of fat can be calculated as follows, 1 kg = 1000 g

Q: Natron is the name of a mixture of salts used by the Egyptians to dehydrate corpses before…

A: Dear student as you have asked multiple questions but according to guidelines we will solve first…

Q: Suppose the following chemical reaction can take place in this mixture: 2 SO2(9)+O,(g) → 2 SO3(g)

A: The chemical reaction which has been given in the question is written as-…

Q: How many grams of solid Ca3(PO4)2 can be formed from a reaction of 51.8 mL of 0.754 M CaCl2 and 21.5…

A:

Q: When a 1.00 L sample of water from the surface of the Dead Sea (which is more than 400 meters below…

A: Molarity is defined as Number of moles of Solute dissolved per Litre of Solution.

Q: How can we identify the precipitate that forms when aqueous solutions of BaCl2 and K2SO4 are mixed?

A: The precipitate that forms when aqueous solutions of BaCl2 and K2SO4 are mixed has to be given,

Q: How many grams of nickel(II) nitrate are needed to produce 35.7 g nickel(II) phosphate in the…

A: Given data, mass of nickel(II) phosphate = 35.7 g, molar mass of nickel(II) phosphate=366.02 g mol-1…

Q: 3. The reaction between Phosphoric Acid (H3PO4) with Calcium Hydroxide yields Calcium Phosphate and…

A:

Q: 3. Assume that 2.4886 g of K½C13O, is dissolved in enough water to make 100.0 mL of solution. (a)…

A:

Q: a) What mass of strontium nitrate (Sr(NO3)2) would be required to prepare 2.000 L of a 0.0180 M…

A:

Q: (a) Write chemical equations to show what happens when each of the following substances is mixed…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 4. How many moles of water are present in a 20.00 gram sample of lithium permanganate, LiMnO4-3H2O?

A: by using mole concept we easily determine the mole of element are present in reactent and products.

Q: 2CO (g) + O2 (g) ⟶ 2 CO2 (g) Which of the following choices best describes the ΔS in the above…

A: Given that, 2CO (g) + O2 (g) ⟶ 2 CO2 (g)  It is clear that, no. of moles at reactant side= 2+1= 3…

Q: What is the mass of fish, in kilograms, that one would have to consume to obtain a fatal dose of…

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Q: Write the chemical reaction of Iron Sulfide (FeS2) to create Sulfuric acid in mines. It reacts with…

A: It is used in the preparation of hydrogen sulphide gas.In hair dyes, paint, ceramics, bottles and…

Q: 3. What is the percentage of sulfur in a sample of 2 gm of coal that gave a precipitate of 0.084 g…

A: Moles of sulfur ( S ) atoms = moles of BaSO4 =  given mass of BaSO4molar mass of BaSO4 = 0.084233.4…

Q: Consider the following reaction at 25 °C: 3 Ni(s) + N2(g) + 3 H,0(g) → 3 NiO(s) + 2 NH3(g) Given the…

A: ∆H = 391.3 kJ/mol

Q: What mass is Na2CO3 is needed to produce 5.Og of CO2

A:

Q: What is the molarity of the chlorate anion in solution after 42.00 mL of 3.000 M NAOH is added to…

A:

Q: How many grams of ammonium carbonate are needed to produce 500L of carbon dioxide if the density of…

A: Density can be calculated using the equation given below: Density = massVolume

Q: How many grams of Ca3(PO4)2 will be needed to prepare 500.0 mL of a 0.161-M solution of Ca3(PO4)2?

A:

Q: What mass of K2CO3, in grams, is needed to prepare 211 mL of a solution having a potassium ion…

A:

Q: You dissolve 14 g of Mg(NO3)2 in water and dilute to 750 ml. What is the molarity of this solution?

A: Given details, Mass = 14 g Volume = 750 mL = 0.75 L To calculate the molarity of the solution.

Q: (a) Write chemical equations to show what happens when each of the following substances is mixed…

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Q: 6CO2 (g) + 6H,O (1) → C6H1206 (s) + 602 (g) How many grams of glucose (C6H12O6) can be produced from…

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Q: 1. Write a balanced equation with the smallest whole number coefficients and include phases, for…

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Q: When aqueous solutions of lead(II) ion are treated with potassium chromate solution, a bright yellow…

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Q: The Le Blanc Process for the manufacture of soda ash encompasses the four steps: NaCl + H2SO4 =…

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Q: 3. What is the mass percent of each component in the mixture formed by adding 12 g of calcium…

A:

Q: If a 240. mL can of orange juice concentrate contains 30.0 g of carbohydrate, what is the…

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Q: 6- In the reaction below by complete reaction of 2 mol KCIO3, 120.6 g KCl is produced. Calculate the…

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Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.6 grams of monohydrated Sodium carbonate…

A:

Q: Balance the following equation by filling the gaps with appropriate numbers. CSHB 02 H2O

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Q: Automotive air bags inflate when a sample of sodium azide, NaN3, is very rapidly decomposed. 2NAN,…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".