The test of completeness in the chemical changes experiment determines whether the NH3 is in excess. Which of the following statements is consistent with this idea? a. If NH3 is in excess, the next thing to do is add more Zn(s) to the sample. b. If NH3 is in excess, all Cu has been reduced. c. If NH3 is a limiting reactant, you'll get Zn(NH3)42+ before adding excess NH3. d. If NH3 is in excess, a blue complex, Zn(NH3)42+, is formed.

Q: Product X has a theoretical yield of 4.8 g. Isolated product X was placed in a plastic sample tray.…

A: Yield is the amount of product formed in a reaction. Theoretical yield is the amount of desired…

Q: Which of the following is a balanced chemical reaction(s)?     a)  H2SO4 + B(OH)3 → B2(SO4)3 + H2O…

A:

Q: Consider the reaction shown. barium + water → barium hydroxide + hydrogen 1. Write the equation…

A: A reaction between barium and water is given as follows:barium + water  barium hydroxide +…

Q: 3. Balance each skeleton equation by adding proper numbers in front of the product(s) and…

A: The Answer to the following question is- To balance the chemical equation the number of atoms of…

Q: A sample of phosphorous is placed in a 10.05 g crucible and gives 10.24 g then heated red hot to…

A: Mass of empty crucible =10.05g Mass of phosphorus  + crucible =10.24 g Mass of phosphorus oxide +…

Q: --------indicates right arrow  - The ^ indicates the subscript of element/compound Match these…

A: Verification of each chemical reaction is done below-

Q: Which is the correct net ionic equation for the reaction of BaCl2 and Na2CO3?   Ba2+ + 2Cl- ?…

A: When two ionic compounds react with each other, they first dissociate into their respective cations…

Q: In lab, a student weighed out 1.636 g of unknown in a beaker. The student added 60 mL DI water and…

A: The percent mass composition is also known as the mass percent also called as the percent by weight.…

Q: H. Balance the chemical equation below, r of Conservation of Mass.

A: Law of conservation of mass states that mass can neither be created nor be destroyed in a chemical…

Q: 3. Complete and fully balance each equation. HNO3(ag)t NaOH(ag) → H2O(I) a. b. Zn(s)t CusO4(ag) →…

A: 3) Answer : a) HNO3(aq) + NaOH(aq)                                → NaNO3(aq) + H2O(l)    b) Zn(s) +…

Q: `When you are balancing the reaction ___H2 + ___N2 → ___NH3 , what number goes in front of N2?

A: Solution Balancing chemical equations involves the addition of ratio coefficients to the reactants…

Q: For the experiment " limiting reactant " and after filtering the precipitate, you checked the…

A:

Q: 5. Evaluate the equations below. Which is NOT a balanced equation? A. Al2O3 + 6 HCl → 2 AlCl3 + 3…

A:

Q: 44. You are setting up a reaction between two chemicals that react according to the equation 3 A + 2…

A: Excess reactant :- A reactant which is present in greater number of moles than required as per…

Q: 2KF + Mg(NO3)2 --> MgF2 + 2KNO3 If 100 g potassium fluoride reacts with 100 g magnesium nitrate how…

A:

Q: -------indicates right arrow - The ^ indicates the subscript of element/compound Match…

A: Synthesis reaction is defined as the chemical reaction in which two or more reactants combine to…

Q: How many grams of CO2 can be prepared by the complete reaction 15.0 grams of CO with excess oxygen?…

A: The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither…

Q: 1. Balance this equation and determine how many molecules of Ag2CO3(s) are produced if 20 molecules…

A:

Q: If 3 molecules of N, react with 6 molecules of H,, determine the number of molecules of NH, that…

A: Reaction is :  N2 + 3H2---> 2NH3

Q: A. Balancing Chemical Equations Write balanced equations for the following reactions, and make a…

A: In the given question ,three unbalance reaction is provided  and we have to balance reaction at…

Q: a. Balance the equation given below. Li2S2O3 +Br2 - LiBr +LiS4O6 B. Write the product of each of the…

A: The answer to the following questions is-

Q: The coefficient of ZnO when the reaction is balanced with the smallest whole number coefficients is…

A: Given, The unbalanced reaction: ZnS + O2  ----> ZnO + SO2

Q: Complete and balance the following combustion equations. a. CH4 + 02 → b. C5H12 + 02→ c. C3H18 + 02…

A:

Q: 7. What mass of nitrogen is required to react with 16 grams of oxygen? 2N2+ 502 --> 2N205 (Hint: 3…

A: as per Q&A guidelines of portal I solve first question because it comes under multiple question…

Q: 88. Copper and bromine react according to this equation: Cu (s) + Br, () → CuBr, (s) If 0.39 moles…

A: Cu(s) + Br2(l) ....> CuBr2(s) Given that: Moles of Cu = 0.39 moles Moles of Br2 = 0.25 moles

Q: For the experiment " limiting reactant " and after filtering the precipitate, you checked the…

A: In this i will suppose both th is e cases . One in which Bacl2  is limiting reagent and second in…

Q: et the molar mass of the reactant and the product.

A:

Q: Balance the products and reactants. Show your work in balancing the formula. _____ Cu + ______…

A:

Q: 41.   MnO2 + 4HCl ---> MnCl2 + Cl2 + 2H2OHow many moles of H2O can be produced by the reaction…

A: Form the reaction; it is clear that 4 moles of HCl reacts with MnO2 to form 2 moles of HCl.

Q: . The equation for the synthesis of ammonia is N 2 + 3H 2 à 2NH 3 . How many moles of H 2 are needed…

A:

Q: Consider the reaction below. How many grams of nitric acid are needed to completely react with 4.22…

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

Q: For the reaction, compute the theoretical yield of the product in moles for each of the following…

A: a. Theoretical yield of product is 1.0 mole.

Q: Baking soda is a pure substance, sodium bicarbonate. Vinegar is a mixture of acetic acid dissolved…

A: Reaction between acetic acid and bicarbonate: CH3COOH (aq) + NaHCO3 (aq) -------------> CH3COONa…

Q: Which of the following chemical reactions is correctly balanced?    3 Fe + 4 O₂ → Fe₃O₄ 2 Fe + O₂ →…

A: To identify: Correctly balanced reaction.

Q: Balance/complete the following chemical equations, and identify the type of equation. a. KCIO3 = KC1…

A: Given : reactions

Q: TRUE OR FALSE. Write TRUE if the chemical equation is balanced and FALSE if not. Then, write the…

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