In the reaction 2C(s) + O_2(s) ---->  2CO(g), what is the volume ratio between O₂ and CO? a 1:1 b 2:1 c. 1:2 d. 2:2

5. Sodium acetate can be formed from the metathesis/double replacement reaction of sodium bicarbonate and acetic acid. (See the Supplemental Information concerning metathesis reactions.) Determine the percent yield when 0.537 g of sodium acetate is obtained from mixing 15.0 g of NaHCO3 with 125 mL of 0.15 M acetic acid.

Determine if the following changes in condition would increase or decrease the rate of the chemical reactions: 1. Adding a metal catalyst for two reactants to locate each other. 2. Storing leftovers in the refrigerator Categorize the following reactions (synthesis, decomposition, single exchange or double exchange): 3. N₂(g) + 3H₂(g) = 2NH3(g) 4. C6H12O6 (aq) --> 2C₂H6O (aq) +2CO2(g) 5. Ca (s) + Zn(NO3)2 (aq) --> Ca(NO3)2 (aq) + Zn (s)

Either sulfuric acid or bismuth(III) nitrate pentahydrate can catalyze this reaction. What is an advantage to using sulfuric acid? What is an advantage of using the bismuth compound?

A tiny sample of an aqueous solution of two substances R and P is sketched below, as if it was under an imaginary microscope so powerful that individual molecules could be seen. (The water molecules are not shown.) 8 R and P can interconvert. That is, R can turn into P, and P can turn back into R: 113 5 R (aq)=P(aq) R P number of R molecules: number of P molecules: K= The equilibrium constant K for this equilibrium is interconversion reaches equilibrium. $3/1₁ Predict the number of R and P molecules in this sample when the . X

For an experiment you are measuring the decomposition rate of organic matter, You have a large amount of CH402 in a container filled with 3.024 Lof water. You Created a saline environment by adding 2.4 g of sodium chloride, 3.6 g of calcium chloride, and 2.8 g of magnesium chloride before diluting. iron (1) oxide is available for the microbes to oxidize the matter into carbon dioxide by forming iron (II) aqueous ions. At the beginning of the experiment, you measure the pH using a probe to be 7.13. After 73 hours you measure the pH again and obtain 7.54. Assuming that the pH change is solely due to the oxidation of organic matter, what is the rate of organic matter decomposition in nanograms per hour?

C6​H12​O6​ O + 6O2​  →→ 6CO2​ + 6H2​O  + Energy ​Determine the limiting reactant and how much of that limiting reactant you would need in order to use up all of the non-limiting reactant. Assume you have 25 grams of glucose and 40 grams of oxygen as reactants for the following photosynthesis reaction: A) Glucose is the limiting reactant; You would need .1388 moles of glucose to use up all of the Oxygen (non-limiting reactant).    B Glucose is the limiting reactant; You would need .208 moles of glucose to use up all of the Oxygen (non-limiting reactant).    C Oxygen is the limiting reactant; You would need 1.25 moles of Oxygen to use up all of the glucose (non-limiting reactant).    D Oxygen is the limiting reactant; You would need .8328 moles of Oxygen to use up all of the glucose (non-limiting reactant).

Classify each chemical reaction: 16K (s) + Sg (s)→ 8K₂S (s) HBr(aq) + NaOH(aq) → NaBr(aq) + H,O() CuSO (aq) + Zn CrO (aq) → ZnSO₂ (aq) + CuCro(s) KBr(aq) + AgNO3(aq) → KNO₂ (aq) + AgBr(s) Explanation reaction P TH F2 Check 80 F3 TAAR 4 888 F4 % 45 type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition 42 A X 6 1 Oprecipitation combustion acid-base MacBook Air FÖ precipitation combustion acid-base precipitation combustion acid-base Oprecipitation combustion acid-base | 20 7 分 F7 8 DII F8 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 9 F9 0 A F10 A S ? F11 olo 18 Ar F12

5:15 1 ull 4G Discussion Assignment #6 O o o INFO DISCUSSION Discussion Assignment #6 Due:Wednesday, 14 Oct 2020, 3:00 PM In titration, one solution is added to another solution until a chemical reaction between the components in the solutions has run to completion. The solution being added is called the titrant, and we say that it solution. The completion of the reaction is usually shown by a change of color caused by a substance called an indicator. used titrate the other A typical titration proceeds in the following way. A specific volume of the solution to be titrated is poured into an Erlenmeyer flask. For example, 15.0 mL of a sulfuric acid solution of unknown concentration is added to a 250 mL Erlenmeyer flask. An indicator is then added to the flask, which changes color when the reaction is complete. The titrant in this example is potassium hydroxide, having a concentration of 0.121 M. The titrant is added to a buret. After slowly adding the titrant to the flask, the reaction…

A studen wanted to determine the value of R and so used the reaction: Mg(s) + 2 HCl(aq) → H2(g) + MgCl2 (aq) She got a piece of magnesium ribbon and determined its mass as 0.0841 g. She placed the ribbon in a test tube with water and excess HCl and inverted it to allow the H2 gas to bubble to the top of the tube while water was pushed out the bottom. She measured the volume of the gas in the tube as 87.8 mL. She measured the temperature of the water at 20.5ᵒC and the atmospheric pressure in the room was 751 torr. 1- What other piece of information did she have to determine in order to accurately calculate R? 2- What did she calculate for the value of R? 3- What was her % error?