Level 1: 1. Phosphorus and hydrogen combine to form phosphine. Pas) + 6 Hzie) → 4 PH3le). (This is an example. Don't worry about state symbols.) 2. Carbon and monatomic sulfur combine to form carbon disulfide. 3. Ammonia decomposes to form its elements. 4. Phosphorus and fluorine combine to form phosphorus trifluoride. 5. Nitrogen dioxide decomposes to form nitrogen monoxide and oxygen gas. Level 2: 1. Ethane and chlorine react to form chloroethane and hydrogen chloride gas. 2. Carbon and water react to form methane and carbon dioxide. 3. Methane and monatomic sulfur react to form carbon disulfide and hydrogen sulfide gas. 4. Ethene and oxygen react to form carbon dioxide and water vapor. 5. Methane and water vapor react to form hydrogen and carbon monoxide. Level 3: 1. Ethanol and oxygen react to form carbon dioxide and water vapor. 2. Nitrogen dioxide and water vapor react to form ammonia and oxygen.

15 16 17 18 19 20 22 23 24 26 27 A chemist prepares a solution of aluminum chloride (AICI,) by measuring out 23. g of aluminum chloride into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's aluminum chloride solution. Round your answer to 2 significant digits. mol/L OnD Continue Submit Assignment O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use 1 Privacy Center Accessibility S0 F5 F6 F8 %23 $ % & 4 5 6 7 8 25 21 %#3 2.

91 D. Calculate the moles of NaOH used in each reaction. In Reactions 1 and 2, this can be found from the mass of the NaOH. In Reaction 3, it can be found using the molarity of the sodium hydroxide solution and its volume. Show your calculations and place your data in the Data Sheet. Imid NaOH 100 40 . OS2 Ind N2011 102,1/1000 Oilcl 4or Na011 1051 E. Calculate the moles of HCl used in reactions 2 and 3 using molarity and volume. Show your calculations and place your data in the Data Sheet. L trement errors), identify, one reason L (in other words, don't just 0.052 identif mit reactant ater that into Dato to She m

In this reaction, the limiting reagent is _. Reactants Products Br Br-Br Al Br Br. -Br Al Br "Br Br Br-Br Br. Br Br Br Br Br Br-Br Zoom Br2 AIBR3 Al H20 29 of 30 251 25 27 28 29 30

1 Favorites Tools Profiles Tab Window Help Aktiv Chemist X C If 28.8 g of NO X rosoft Office H... Blackboard 4.30 2 ADD FACTOR x( ) Pearson - Course... 0.0580 a Determine the X 6.022 x 1023 What mass grams of nitric acid, HNO,, is required to neutralize (completely react with) 4.30 g of Ca(OH), according to the acid-base reaction: 3.60 Time's Up! 63.02 HNO (aq) + Ca(OH)₂(aq) - 2 H₂O(1) + Ca(NO₂)₂(aq) 0.116 mol Ca(OH)₂ mol Ca(NO₂)₂ mol HNO, 18.02 q HNO. Grams to Mole X ANSWER 1 g Ca(OH)₂ MacBook Pro 164.10 2 g Ca(NO3)₂ 21 Co zoom O Q. Determine the X 7.31 RESET 5 0.0682 g H₂O W A ● 74.10 Q mol H₂O Р X

2. Complete each word equation, (10K) write a balanced chemical equation,(10C) and determine the type of reaction- for each reaction (6T) A. Sodium + iron (III) oxide B. Calcium chloride + aluminum sulphate → C. Copper (II) nitrate + barjum chloride - D. Bromine + aluminum iodide - E. Water MAY tv 9. MacBook Pro 7 8. 9.

Give the balanced chemical reaction and the corresponding % composition by mass of each compound. (Please give the full solution)

assroom.collegeboard.org <11 of 11 0.0041 gram 0.0083 gram ©** 0.0092 gram A chemistry class is investigating contamination in different sources of water and discovers that one source of water may have some lead ions (Pb²+) in it. The students decide to perform an experiment to test for the presence of lead. The students take a sample of water to the lab and add solid NaI, which will precipitate any lead ions according to the following equation. 2 Nal(aq) + Pb²+ (aq) PbI₂ (s) + 2 Na+ (aq) 0.0184 gram 44% 10:49 If a 2000.0 mL sample of water has a lead ion concentration of 2.00 x 10-5 M and excess NaI is added to the sample, what is the mass of PbI2 collected at the end of the experiment? Submit (:D) : III = 19 f(x) 8

Can anyone please help me to solve this problem?I am stuck please help ( This question is not a part of any graded assignment) So please help me.

Balance these chemical equations (Use the lowest possible whole number coefficients, and enter 1 if you have 1NaCl for instance). a.   SnO2 + H2 -->  Sn +  H2O b.   KOH  +  H3(PO4) -->  K3( PO4 ) +  H2O c.   Na3(PO4) +  HCl -->  NaCl +  H3(PO4)