materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine the percent composition of the alloy. The scientist takes a 12.849 g sample of the alloy and reacts it with concentrated HCl. The

Q: Use the mole ratio of hydrogen to oxygen from Question #4 to determine what happens when various…

A: Mole ratio of hydrogen and oxygen is 2:1 in the reaction Reaction is  2H2 + O2 -----> 2H2O

Q: You weigh out 0.2103 g of the unknown sample and react it with an excess of hydrochloric acid inside…

A: Reaction of metal carbonate with excess HCl that gives CO2 gas and the corresponding metal chloride.

Q: 22. Be able to solve one-step and multi-step problems involving moles, mass, and a balanced chemical…

A: Answer: 399.26 g of NaBr is formed.

Q: Silicon tetrachloride (SiCl4 ) can be prepared by heating Si in chlorine gas:  Si(s) + 2Cl2(g) ->…

A:

Q: Copper(II) sulfide is oxidized by molecular oxygen to produce gaseous sulfur trioxide and solid…

A: There are two reactions mentioned in the given problem.  The two reactions are given below -

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: In a neutralization reaction, 50.00 mL of 0.8500 M phosphoric acid reacts with 2.500 g of magnesium…

A: The answers to the first three questions can be given as - Given Data -

Q: Write the correct net ionic equation for the reaction of potassium carbonate with copper(II)…

A: The reaction between Potassium carbonate and copper(II) chloride can be given as below,

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

A:

Q: Consider the precipitation reaction that takes place when a water solution of aluminum nitrate,…

A: On reacting above two aluminium phosphate precipitate and potassium nitrate form as side product.

Q: An aqueous solution containing 3.89 g of sodium phosphate was mixed with an aqueous solution…

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

Q: If 1.800 g of aluminum reacted with an excess aqueous HCl to produce 8.894 g of aluminum chloride.…

A: Answer:- firstly a balanced chemical equation is written then using the mass , mass of Al and cl is…

Q: A compound comprised of carbon and hydrogen is completely combusted with excess oxygen to produce…

A: moles of carbon dioxide produced = mass of carbon dioxide / molar mass of carbon dioxide = 44/44 = 1…

Q: Aqueous solutions of barium nitrate and potassium phosphate are mixed, and a reaction occurs. What…

A: Barium nitrate has formula Ba(NO3)2 Potassium phosphate has formula K3PO4 Aqueous solution of barium…

Q: Suppose that 4.1 mol NO2 and 0.80 mol H2O combine and react completely. Which reactant is in excess?…

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

Q: 7.5 g aluminum was heated with sodium chlorate (NaClO3) in an evacuated glass vessel. The heating…

A: A numerical problem based on the oxidation of Al into Al2O3, which is to be accomplished.

Q: A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCl. What…

A: Given: Total mass of alloy = 12.3 g. And moles of H2 produced = 1.66 mol. Assuming that there are…

Q: Write a balanced chemical equation based on the following description: solid tetraphosphorus…

A: chemical equation is the representation of a reaction in which reactants and products are written in…

Q: Write a balanced reaction (using the smallest whole-number coefficients) for the decomposition of…

A: We are to write the reaction for decomposition of nitrogen dioxide into oxygen gas and notrogen…

Q: Your boss instructs you to create 5.43 moles of rust (your product). What mass of iron is required…

A: a) The reaction showing the formation of rust is- Thus, as per this reaction, 2 moles of rust is…

Q: The equation F2 + NaBr→ NaF + Br2 is an example of which type of reaction?

A: The reaction given is,

Q: Write a balanced chemical equation based on the following description: the reaction of solid…

A: Solid iron(III) sulfide reacts with aqueous hydrochloric acid to form aqueous iron(III) chloride and…

Q: Consider the reaction 2 NO(g) + 5 H2(g) → 2 NH3(g) + 2 H20(g) The reaction mixture initially…

A: According to stoichiometry 2 mole of NO react with 5 mole of H2 So 10 mole of H2 will react with =10…

Q: Determine the mass of sodium nitrate produced when 0.73 g of aqueous nickel(II) nitrate reacts with…

A: NOTE : There is a typing error in question. The solid will be of nickel (II) hydroxide and and…

Q: Consider the reaction of solid aluminum iodide and potassium metal to form solid potassium iodide…

A: Check the solubility of each compound using the solubility rule and use it to balance the reaction.

Q: You need to prepare 0.600 L of a solution of magnesium nitrate. The required molar concentration…

A: Given :  Volume of magnesium nitrate solution = 0.600 L  Concentration of magnesium nitrate = 0.156…

Q: Write the balanced chemical equation for each of the following reactions. Neutralization reaction…

A: According to the Arrhenius theory, hydrochloric acid is an acid, and magnesium hydroxide is a base.…

Q: What mass of Na2SO4 is required to precipitate all of the lead cations found in an 18.5 ml sample of…

A:

Q: Use the solubility generalizations on the information page to predict if one or more precipitates…

A:

Q: rock is to precipitate the phosphorus as MgNH4PO4, which is then heated to tum it into Mg2P2O7. What…

A:

Q: Aluminum reacts with HCl to produce H2 gas and AlCl3 . Write the balanced equation for this…

A: Initially aluminium(Al) reacts with HCl  to form AlCl3  and H2 gas. Balancing the chemical equation…

Q: If you mass 0.430 g of Co(NO3)2 x 6H2O and dissolve it in water, what further information would you…

A: A. Since, moles = mass/molar mass we need molar mass of Co(NO3)2.6H2O to calculate moles.

Q: Chlorine, Cl2,  can be generated by heating together calcium hypochlorite, Ca(OCl)2, and…

A: Provided amount of Ca(OCl)2=9.5 g Molar mass of Ca(OCl)2= 142.98 g/mol Molarity of HCl= 5.0M Volume…

Q: Write a balanced chemical equation based on the following description: sodium metal reacts with…

A: sodium metal reacts with chlorine gas to produce solid sodium chloride

Q: Nitrogen trioxide gas and nitrogen dioxide gas combine to produce dinitrogen pentoxide gas . Write…

A: To balance the chemical equation, the same atoms on the reactant side (left side of the chemical…

Q: Uxygen gas reacts with nitrogen monoxide gas to produce nitrogen dioxide gas. Write a balanced…

A: Oxygen gas reacts with nitrogen monoxide gas to produce nitrogen dioxide gas.

Q: Write a balanced chemical equation for this reaction. Chlorine gas and solid phosphorus combine to…

A: Here the reactants are chlorine gas, Cl2(g) and solid phosphorus, P4(s). The product is phosphorus…

Q: 2 g of aluminium metal is mixed with 11.5 g of sulphuric acid, H2SO4 to form aluminium sulphate and…

A: Metals react with acid to form salt and release hydrogen gas. A balanced equation is the equation in…

Q: Write the balanced chemical equation for the Sabatier process

A: Sabatier process is used to produce methane gas  ( CH4)  from Carbon dioxide ( CO2 ) and hydrogen…

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

A: Given - Liquid hexane reacts with chlorine gas to form liquid chlorohexane and hydrogen chloride gas

Q: Write the correct net ionic equation for the reaction of lithium iodide with lead(II) nitrate, which…

A: The net ionic equation shows only the chemical species that are involved in a reaction, while the…

Q: A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCl. What…

A:

Q: Write a balanced chemical equation for this reaction. Nitrogen dioxide gas is obtained by the…

A: Nitrogen dioxide gas is obtained by the reaction of oxygen gas and nitrogen monoxide gas. Then,

Q: Write a balanced chemical equation based on the following description: liquid C₇H₈O reacts with…

A: