In experiment 2, you will place an AlkaSeltzer tablet in each of the HCI solutions you prepared. The reaction between HCI and NaHCO3 should take place quickly and release gaseous CO2. You will then use the mass lost for each flask to determine the amount of NaHCO3 that reacted. Let's make sure you know how to do this! A student performs this experiment and determines that 1.55 g of CO2 were lost. How many grams of NaHCO3 must have reacted or been used up in order to produce this amount of CO2? GIVE YOUR ANSWER IN GRAMS TO TWO DECIMAL PLACES. NOTE: You will need to do this exact calculation in the lab, using your experimental data. • • Once this quiz confirms you've got the right strategy, we recommend that you make notes for yourself in your lab worksheet (Page 14, Sample Calculation 2) so you can calculate confidently once you have your actual data. If you don't get this question right, review stoichiometry in the course textbook or check in with your lab TA Your Answer: Answer

Consider the general chemical equation 3A+B→2C. Part A. If 1.45 g of A reacts with 1.75 g of B, what is the mass of C? Express your answer with the appropriate units. Part B. If 4.70 g of A reacts to produce 8.95 g of C, what is the mass of B? Express your answer with the appropriate units.

From the list of reactions below, pick out the combustion reactions?        1) 2C2H6(g) + 7O2 (g) →  4CO2(g) + 6H2Ol)           2) MgO(s) + CO2 (g) → MgCO3(s)           3) ZnCO3(s) →  ZnO (s) + CO2 (g)           4) 2CH3OH(l) + 3O2 (g) →  2CO2(g) + 4H2O(l)     a 1, 2, 3, and 4   b 3 and 4   c 2, 3, and 4   d 1, 3, and 4   e 1 and 4

13. Aluminum metal (Al) reacts with sulfur (S) to produce aluminum sulfide (ALS) according to this balanced chemical equation: 2 Al(s) + 3 S(s) → AlS(s) How many atoms of aluminum will react completely with 1.33 x 10 atoms of sulfur?

Struggling to rewrite the equation

Balance the following equations (be sure to first convert any chemical names into formulas). Show all steps for balancing or write a brief explanation of your mental process if you were able to balance it in your head. FeCl3 + NaOH → Fe(OH)3 + NaCl P + O2 → P2O5 Lead(II) hydroxide reacts with hydrogen chloride to produce water and lead(II) chloride. Zinc sulfide reacts with aluminum phosphide to produce zinc phosphide and aluminum sulfide.

Balance the following chemical reaction. Enter the sum of the balanced coefficients as your answer. Assign "blank" coefficients a value of 1. ammonia + oxygen gas -→ nitrogen monoride + water

Here is some information to help. In this experiment, magnesium metal is heated until it reacts with oxygen in the air according to the following balanced equation: 2Mg(s)+ O2(g) → 2MgO(s)                                                                  (silver metal)                  (white-gray ash) As the magnesium burns in air, it may also combine with nitrogen in air. To remove any nitride product, water is added, and the product is reheated. Any nitride product is converted to magnesium oxide and ammonia. 3Mg(s)+ N2(g) → Mg3N2(s) Mg3N2(s)+3H2O(l)→3MgO(s)+2NH3(aq) A weighed amount of the magnesium metal is used, and the mass of the oxide product formed is determined at the end of the experiment. The mass of oxygen that combines with the magnesium is obtained from the difference between the mass of the oxide product and the original mass of magnesium. mass of oxide product-mass of magnesium=mass of oxygen in oxide product The empirical formula of the oxide…

A chemist hoped to make an ethyl ester using diazoethane. At the end of the reaction, only the original carboxylic acid, ethene, and nitrogen were produced: □ CH H EXP 0+ H₂C OH Suggest an arrow-pushing mechanism that accounts for these products. Draw all missing reactants and/or products in the appropriate boxes by placing atoms on the canvas and connecting them with bonds. Add charges where needed. Electron-flow arrows should start on the electron(s) of an atom or a bond and should end on an atom, bond, or location where a new bond should be created. L CONT. 1 H₂C O NEN: OH ΝΕΝ OH *O* + H₂C=CH₂ + N₂ H с N O S CI Br I

Classify each chemical reaction.