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4, 5, 13, 15, 16
6 pts Question 4 Perform each...
i need help with 1-6 i need help with questions 1-6 Question 1 8 pts Choose...
i need help with 1-6
i need help with questions 1-6
Question 1 8 pts Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A element [Select) > b) [Select) c) [Select) d) C10HSCIN2 (Select) Question 1 Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A eleme [Select] S...
i need help with 2,4,5,8,9,10-12 6 pts Question 2 A student designs an experiment to test...
i need help with 2,4,5,8,9,10-12
6 pts Question 2 A student designs an experiment to test the hypothesis: "If a solution of sucrose in water has a higher concentration, it will attract more ants." The student makes sucrose solutions with concentrations of 1.00,5.00, 10.50, 20.00 and 25.00% sucrose by mass, then leaves the solutions outside. After some time has passed, the student counts the number of ants that are in each beaker. The independent variable for this experiment is the:...
i need help with all these questions please Question 23 4 pts Which of these liquids...
i need help with all these questions please
Question 23 4 pts Which of these liquids is most likely to have the lowest (slowest) rate of evaporation (g/min) and why? Select the single best answer. H H H HH :01 IH terbaru H 11 HHH cnc- 7 H H H ica H 나 Hit 4 c B A ΟΟΟΟΟΟ C, because it has the highest molar mass. A, because this molecule has the lowest molar mass.. B, because it has...
0.8 pts Question 5 Complete neutralization of 25.00 mL of 0.15 15 M H2SO4 solution requires...
0.8 pts Question 5 Complete neutralization of 25.00 mL of 0.15 15 M H2SO4 solution requires moles of KOH and forms grams H2O. (Hint: write the balanced equation first) (Report your answer with 4 significant figures. Do NOT express your answer in scientific notation) (Molar Mass H2O = 18.016 g/mol)
i need help with these three questions Incorrect Question 2 0/1.25 pts 0.678 g of KHP...
i need help with these three questions
Incorrect Question 2 0/1.25 pts 0.678 g of KHP is used to standardize a NaOH solution. If it took 31.55 mL of NaOH to neutralize the KHP, what is the concentration of the NaOH solution? The molar mass of KHP is 204.22 g/mol. KHP + NaOH --> NaKP + H2O Give the answer to 3 sig figs and use units of M 0.0214 Unanswered Question 3 0/1.25 pts A 25.00 mL HCl sample...
Question 6 4 pts The dicarboxylic acid potassium hydrogen pthalate (shown in the figure) is...
Question 6 4 pts The dicarboxylic acid potassium hydrogen pthalate (shown in the figure) is used to standardize solutions of strong base. What is the molar mass of this compound? OH 172.2 g/mol 192.2 g/mol 204.2 g/mol 71.08 g/mol 248.9 g/mol Which of the following compounds contains the largest number of atoms? 4.0 mol of H2S 1.0 mol of CH3COOH 2.0 mol of Na2SO4 5.0 mol of HBr 3.0 mol of NO;
4 Edit & C Question 33 2 pts How many moles of CO2 will be make...
4 Edit & C Question 33 2 pts How many moles of CO2 will be make from 19.9 g of propane (C3H8) with a molar mass of 44.10 g/mol? CzHg +502 3CO2 + 4H20 Question 34 2 pts How many mols of reactant remains after 0.47 mol of sodium phosphate reacts with 0.54 mol of magnesium chloride? (Just put in the number - don't put the units in the answer.) 2NaPO, (aq) + 3MgCl2 (aq) + 4NaCl(aq) + Mg3(PO4)2 (s)...
Question 43 4 pts Molarity & solution concentration: Your answers need to have the correct number...
Question 43 4 pts Molarity & solution concentration: Your answers need to have the correct number of significant figures. What's the molarity of a solution containing 48.5 g of MgCl2 (Molar mass = 95.21 g/mol) in 1.75 L volume? HTML Edita
Not yet graded/5 pts Question 13 Free Response For questions A and B. A hydrocarbon containing...
Not yet graded/5 pts Question 13 Free Response For questions A and B. A hydrocarbon containing 85.7% of carbon and 14.3% of hydrogen was burned in a rigid, enclosed box with the pressure of 715 mmHg at 95°C and an oxygen volume of 4490 mL. At the end of the reaction, the temperature cooled down to 0°C. Molar mass of the hydrocarbon is 70.0 g/mol. A. What is the amount of O2 reacted in grams? B. What is the yield...
i need help with 17-26 will be installed later What mass of aluminum reacts with 60.5...
i need help with 17-26
will be installed later What mass of aluminum reacts with 60.5 g of chlorine (Cl), according to the balanced chemical equation below: 2 A1 + 3Cl2 --> 2AICI 15.3g 30.78 23.03 46.03 5.10 7.678 4 pts Question 18 What volume of a 3.00 M solution of KCl is required to make 500.0 ml. of a 0.300 M solution of KCI? 3.00 mL 500 ml 300 mL 5.00 mL 16.7 ml 10.0 ml 500.0 ml Question...
i need help with 1-6
i need help with questions 1-6
Question 1 8 pts Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A element [Select) > b) [Select) c) [Select) d) C10HSCIN2 (Select) Question 1 Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A eleme [Select] S...
i need help with 2,4,5,8,9,10-12
6 pts Question 2 A student designs an experiment to test the hypothesis: "If a solution of sucrose in water has a higher concentration, it will attract more ants." The student makes sucrose solutions with concentrations of 1.00,5.00, 10.50, 20.00 and 25.00% sucrose by mass, then leaves the solutions outside. After some time has passed, the student counts the number of ants that are in each beaker. The independent variable for this experiment is the:...
i need help with all these questions please
Question 23 4 pts Which of these liquids is most likely to have the lowest (slowest) rate of evaporation (g/min) and why? Select the single best answer. H H H HH :01 IH terbaru H 11 HHH cnc- 7 H H H ica H 나 Hit 4 c B A ΟΟΟΟΟΟ C, because it has the highest molar mass. A, because this molecule has the lowest molar mass.. B, because it has...
0.8 pts Question 5 Complete neutralization of 25.00 mL of 0.15 15 M H2SO4 solution requires moles of KOH and forms grams H2O. (Hint: write the balanced equation first) (Report your answer with 4 significant figures. Do NOT express your answer in scientific notation) (Molar Mass H2O = 18.016 g/mol)
i need help with these three questions
Incorrect Question 2 0/1.25 pts 0.678 g of KHP is used to standardize a NaOH solution. If it took 31.55 mL of NaOH to neutralize the KHP, what is the concentration of the NaOH solution? The molar mass of KHP is 204.22 g/mol. KHP + NaOH --> NaKP + H2O Give the answer to 3 sig figs and use units of M 0.0214 Unanswered Question 3 0/1.25 pts A 25.00 mL HCl sample...
Question 6 4 pts The dicarboxylic acid potassium hydrogen pthalate (shown in the figure) is used to standardize solutions of strong base. What is the molar mass of this compound? OH 172.2 g/mol 192.2 g/mol 204.2 g/mol 71.08 g/mol 248.9 g/mol Which of the following compounds contains the largest number of atoms? 4.0 mol of H2S 1.0 mol of CH3COOH 2.0 mol of Na2SO4 5.0 mol of HBr 3.0 mol of NO;
4 Edit & C Question 33 2 pts How many moles of CO2 will be make from 19.9 g of propane (C3H8) with a molar mass of 44.10 g/mol? CzHg +502 3CO2 + 4H20 Question 34 2 pts How many mols of reactant remains after 0.47 mol of sodium phosphate reacts with 0.54 mol of magnesium chloride? (Just put in the number - don't put the units in the answer.) 2NaPO, (aq) + 3MgCl2 (aq) + 4NaCl(aq) + Mg3(PO4)2 (s)...
Question 43 4 pts Molarity & solution concentration: Your answers need to have the correct number of significant figures. What's the molarity of a solution containing 48.5 g of MgCl2 (Molar mass = 95.21 g/mol) in 1.75 L volume? HTML Edita
Not yet graded/5 pts Question 13 Free Response For questions A and B. A hydrocarbon containing 85.7% of carbon and 14.3% of hydrogen was burned in a rigid, enclosed box with the pressure of 715 mmHg at 95°C and an oxygen volume of 4490 mL. At the end of the reaction, the temperature cooled down to 0°C. Molar mass of the hydrocarbon is 70.0 g/mol. A. What is the amount of O2 reacted in grams? B. What is the yield...
i need help with 17-26
will be installed later What mass of aluminum reacts with 60.5 g of chlorine (Cl), according to the balanced chemical equation below: 2 A1 + 3Cl2 --> 2AICI 15.3g 30.78 23.03 46.03 5.10 7.678 4 pts Question 18 What volume of a 3.00 M solution of KCl is required to make 500.0 ml. of a 0.300 M solution of KCI? 3.00 mL 500 ml 300 mL 5.00 mL 16.7 ml 10.0 ml 500.0 ml Question...
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