In the preparation of brass, which is a copper-zinc alloy,19.0g copper is added to enoigh zinc to produce 108g of brass. i) Calculate the percentage by mass of copper in the brass. ii) what is the percentage by mass of zinc in the brass?

Q: After mixing these solutions... determine which compound, (NazCO3 or Ni(NO3)2) will be the limiting…

A: Calculation of number of moles of the two reactants given is shown below.

Q: A student is carrying out a synthesis reaction in the lab and isolates a pure white solid product…

A: Percent yield is the ratio of observed yield to that of calculated yield multiplied by 100.

Q: A 0.660 g sample of a mixture containing only NaBr and CaBr, is dissolved in water. An excess of an…

A: we have to calculate mass of Br- ions, mass percent of Br- ions in the original sample and mass…

Q: How many moles of H2 and N2

A:

Q: If 9.02 x 1024 particles of vinegar (HC2H3O2)HC2H3O2) are added to 5 moles of eggshell (CaCO3) and…

A:

Q: 23.  Determine the number of atoms and the mass of zirconium, silicon, and oxygen found in 0.3384…

A: Avogadro’s number is the number of atoms or molecules present in one mole of substance. The value of…

Q: A 1.274 g sample of copper(II) sulfate was dissolved in water and allowed to react with excess zinc…

A: When copper sulfate solution is reacted with excess zinc, then the zinc metal displaces copper…

Q: Write balanced equations for each of the following reactions. (a) When mercury(II) oxide is heated,…

A: Balanced chemical reaction is when number of atoms on reactant side and product side are equal.

Q: What mass of calcium hydroxide could be reacted by 1.000 g hydrochloric acid?

A:

Q: A sample of a substance with the empirical formula XBrą weighs 0.5761 g. When it is dissolved in…

A:

Q: 3) A sample of 8.69-g of Zn(OH), is added to 145.0 mL of 0.802 M sulfuric acid. a) Write the…

A: ✓Given question is an example of neutralization reaction.Since acid and base neutralize each other's…

Q: A sample of hydrated aluminum sulfate wing 2.954 g was given to a student to be used in the water of…

A: Assuming the formula of hydrated aluminum sulfate is Al2(SO4)3 . yH2O where y = number of water…

Q: Barium metal was quantitatively precipitated from a 1.52 g sample of BaCl2-2H2O. The mass of the…

A: Given: Mass of the sample BaCl2.2H2O =1.52g Mass of Barium collected = 0.844g

Q: 4. What mass of hydrogen sulphate can be prepared from 50.0 g sulphur dioxide, 15.0 g oxygen, and…

A: We have given,  Mass of sulphur dioxide = 50.0g Mass of oxygen = 15.0 g  Mass of water = 980.0g

Q: How many moles of N2 can be formed by the decomposition of 2.12 mol of ammonia, NH3?

A:

Q: How many grams of copper(II)-nitrate react with 1.80 g of silver-nitrate in the presence of excess…

A: Given,  1.80 g of silver-nitrate in the presence of excess copper to produced mass of copper(ii)…

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

A: Given data;Mass of metallic alloy = 3.826 gMass of mixture of oxides = 4.456 gThe molar mass of lead…

Q: How many moles of H2 and N2 can be formed by the decomposition of 0.185 mol of ammonia, NH3?

A: The decomposition reaction of ammonia that will take place is  2 NH3 ------> N2 + 3 H2

Q: A sample that contains only MnCO3 and MgCO3 weighs 0.9536 g. When it is dissolved in excess acid,…

A: Here we are required to find the percentage of MnCO3 in the sample .

Q: 102.0g of tricarbon Octahydrogren is completely burned. How much carbon Dioxide is produced?

A: C3H8 is tricarbon Octahydrogen.

Q: In the preparation of brass, which is a copper-zinc alloy, 33.0 g copper is added to enough zinc to…

A:

Q: 1.08 g Epsomsalt (or hydrated magnesium sulfate)is heated,and 0.57g of dried Epsom…

A: Given: 1.08 g Epsomsalt (or hydrated magnesium sulfate)is heated and 0.57g of dried Epsom…

Q: Write the balanced equation representing the reaction between solid copper and nitric acid to yield…

A:

Q: Determine the molarity of each of the following solutions: (a) 1.457 mol KCl in 1.500 L of solution…

A: Molarity= moles of solute/volume of solution(in litres). a) Molarity of KCl solution= moles of Kcl /…

Q: A 21.5 g sample of nickel was treated with excess silver nitrate solution to produce silver metal…

A: Write the chemical equation for the given reaction,

Q: A student mixes 100.0 mL of a 0.100 M solution of potassium phosphate with 100.0 mL of a 0.125 M…

A: Given,Molarity of potassium phosphate = 0.100 Mvolume of potassium phosphate = 100.0 mLMolarity of…

Q: To investigate and observe different chemical transformations of copper, by conducting a series of…

A: From the series of reactions involving copper compounds, it can be concluded that copper undergoes…

Q: A 0.2356 g sample containing only NaCl and BaCl₂ yielded 0.4637 g of dried AgCl. Calculate the…

A: Given data:The amount of sample containing NaCl+ BaCl2 =  0.2356 gThe amount of AgCl (obtained)=…

Q: (a) Find the ORIGINAL Chemical Reaction equation of the precipitated sulfur between the given:   Raw…

A:

Q: 119 g of aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide.…

A: Welcome to bartleby !

Q: What is the balanced equation for Ammonia(NH3) is formed from its elements?

A: Reaction of N2 and H2 to formed ammonia. So, N2 + H2 ->NH3

Q: (b) In the reaction with 50.0 g of magnesium and 50.0 g of copper(II) nitrate how many grams of the…

A: Oxidation means loss of electrons or increase in Oxidation state. Reduction  means gain of electrons…

Q: 58. The iron content of hemoglobin is determined by de- stroying the hemoglobin molecule and…

A: The solution concentration in a redox titration can be calculated using the following formula;…

Q: In lab, a student weighed out 1.609 g of unknown in a beaker. The student added 67 mL DI water and…

A: Mass of Na3PO4 is determined.

Q: Aqueous iron (III) nitrate and aqueous strontium chloride combine to produce solid iron (III)…

A: No, aqueous iron (III) nitrate and aqueous strontium chloride combine to produce aqueous iron (III)…

Q: c) List An ore with the mass of 1.52 g is analyzed for the manganese content (%Mn) by converting the…

A: The mass of the ore sample is = 1.52 g The mass of the Mn3O4 precipitate is = 0.126 g The percentage…

Q: You reduce a 0.9355g solid platinum (IV) oxide with 0.0879g hydrogen gas to yield elemental platinum…

A: Limiting reagent is defined as the reactant which is present in a limited quantity in the reaction.…

Q: piece of copper with a mass of 6 g is placed in a solution of silver (I) nitrate containing excess…

A:

Q: If 28 g of potassium hydroxide is reacted with phosphoric acid, what is the theoretical yield of the…

A:

Q: A white coloured powder is used by doctors for supporting fractured bones. (a) Write chemical name…

A: Plaster of Paris is a white powder chemical compound that is obtained from heating gypsum. Its…

Q: Iron was analyzed by dissolving 0.7324 g of sample in concentrated HCI. The Fe(lII) was then…

A: The given question is based on a simple concept of moles. We know that number of moles are equal to…

Q: How many grams of carbon dioxide can form when a mixture of 5.00 grams ethylene and 5.70 grams of…

A: Combustion is the process of burning in aerobic  condition . Products of combustion are water and…

Q: The following reaction can be used to convert carbon dioxide to oxygen gas. 4 KO₂ (s) + 2 CO₂(g) → 2…

A: Mass of KO2 = 0.860 g Mass of O2 produced = ?

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".