If you could please show all work for these, I'd really appreciate it! 1. How many...
If you could please show all work for these, I'd really appreciate it!
1. How many grams are 4.39x10^25 molecules of nitrogen monoxide?
2. How many grams of Fe can be recovered from 55.0g of Fe2O3?
3. Calculate the (mass)% composition of magnesium hydroxide
4. Calculate the empirical formula for a compound containing 60.0% C, 4.48% H and 35.5% O.
5. A compound of carbon and hydrogen and oxygen is determined to be 38.7% C, 51.6% O and 9.7% H. Calculate the molecular formula if the molar mass is 62g/mol
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If you could please show all work for these, I'd really
appreciate it!
1. How many...
please answer all, and type please Problems and questions (show all calculations, correct significant figures and...
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
answer all please 3- Find the %K- composition of individuals in, KCIOS. %CI= %OF 4- How many gram of Magnesium is in...
answer all please
3- Find the %K- composition of individuals in, KCIOS. %CI= %OF 4- How many gram of Magnesium is in 5.6 gram of Mg(OH)2? 5. Find the empirical formula of a compound with the following composition: Hg 80.69% S 6.436% o 12.87% 6- How many atoms are in 35 gram of K3PO3?
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6%...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...
1. How many moles of MgS2O3 are in 225 g of the compound? 2. Determine the...
1. How many moles of MgS2O3 are in 225 g of the compound? 2. Determine the empirical formula for a compound that is 64.8% C, 13.6% H, and 21.6% O by mass. 3.A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? 4.The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. In the first step of the Ostwald process, ammonia is reacted...
Please do 5 and 6 only and can you show all your work of how to...
Please do 5 and 6 only and can you show all your work of how
to get the answer thanks.
on many wa ysel dumns are there in 91.2 grams of barium phosphate 3. How many grams of silver nitrate are needed to react with excess sodium phosphate to produce 42.7 grams of solid product? 4. Give the total molecular, total ionic, and net ionic reactions for each of the following: a. ammonium hydroxide plus hydrochloric acid b. calcium metal...
1- Determine the number of moles of oxygen atoms in 2.15 mol CO2. 2- How many H...
1- Determine the number of moles of oxygen atoms in 2.15 mol CO2. 2- How many H atoms are present in 35.2g of CH2Br2. 3- Calculate the empirical formula of the natural flavor responsible for the taste and smell of vanilla, knowing the elemental mass percent composition: C 63.15% , H 5.30%, O 31.55%. Write the formula in the form CxHyOz. 4- Calculate the number of moles in 72.5 g of N02. 5- Calculate the mass of 15.7 mol of HNO3. 6-...
please answer all my questions for me. thank you!! Use the References to access important values...
please answer all my questions for me. thank you!!
Use the References to access important values if needed Calculate the percentage composition for NO2. Mass percentage of nitrogen = Mass percentage of oxygen = Submit Answer Retry Entire Group 8 more group attempts remaining Reference! Use the References to access important value of needed for this question 53.95 gram sample of iron is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 77.14...
Chem200 Haggard Homework Problems Composition of Substances and Solutions 1. When 28.Ograms of CO is analyzed, it...
Chem200 Haggard Homework Problems Composition of Substances and Solutions 1. When 28.Ograms of CO is analyzed, it is found to contain 12.0g of carbon and 16.0g of oxveen. How much carbon and how much oxygen would be found in 100.0g of CO2 2. A sample of a compound is found to contain 40.0g of calcium, 71.0g of chlorine, 4.0g of hydrogen, and 32.0g of oxygen. How much of each element would be needed to make 750.0g of this compound? 3....
Extra Credit (7 pts each) SHOW WORK! 1) When a solution of Magnesium Chloride and Silver Nitrate are mixed: a) Wri...
Extra Credit (7 pts each) SHOW WORK! 1) When a solution of Magnesium Chloride and Silver Nitrate are mixed: a) Write and balance the chemical reaction. Include all phases of both reactants and products. b) Write the complete ionic and net ionic equations for the reaction. c) Identify what kind of reaction is occurring. 2) Given the following percent composition of a compound, what is the empirical formula? 40%C, 6.7% H.53.3% . 3) Determine the limiting reactant (LR) and the...
Questions You must show your work to obtain full credit. 1- Which weighs more,8.0 mL of...
Questions You must show your work to obtain full credit. 1- Which weighs more,8.0 mL of Pb ( density = 11.3g/mL) or 41.0 g of Hg? 2- Calculate the mass percent of N in N2O5 (MM of N2O5 = 108.01 g/mol): Mass percent N = 3- The empirical formula for iso-octane,C8H18 is 4- (SF) what is the density of Zirfinium if you know that 1.6 mL weighs 1.40g? 5-(SF) How many atoms are present in 354.53 amu of silicon? 6-How...
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
answer all please
3- Find the %K- composition of individuals in, KCIOS. %CI= %OF 4- How many gram of Magnesium is in 5.6 gram of Mg(OH)2? 5. Find the empirical formula of a compound with the following composition: Hg 80.69% S 6.436% o 12.87% 6- How many atoms are in 35 gram of K3PO3?
Please do 5 and 6 only and can you show all your work of how
to get the answer thanks.
on many wa ysel dumns are there in 91.2 grams of barium phosphate 3. How many grams of silver nitrate are needed to react with excess sodium phosphate to produce 42.7 grams of solid product? 4. Give the total molecular, total ionic, and net ionic reactions for each of the following: a. ammonium hydroxide plus hydrochloric acid b. calcium metal...
please answer all my questions for me. thank you!!
Use the References to access important values if needed Calculate the percentage composition for NO2. Mass percentage of nitrogen = Mass percentage of oxygen = Submit Answer Retry Entire Group 8 more group attempts remaining Reference! Use the References to access important value of needed for this question 53.95 gram sample of iron is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 77.14...
Chem200 Haggard Homework Problems Composition of Substances and Solutions 1. When 28.Ograms of CO is analyzed, it is found to contain 12.0g of carbon and 16.0g of oxveen. How much carbon and how much oxygen would be found in 100.0g of CO2 2. A sample of a compound is found to contain 40.0g of calcium, 71.0g of chlorine, 4.0g of hydrogen, and 32.0g of oxygen. How much of each element would be needed to make 750.0g of this compound? 3....
Extra Credit (7 pts each) SHOW WORK! 1) When a solution of Magnesium Chloride and Silver Nitrate are mixed: a) Write and balance the chemical reaction. Include all phases of both reactants and products. b) Write the complete ionic and net ionic equations for the reaction. c) Identify what kind of reaction is occurring. 2) Given the following percent composition of a compound, what is the empirical formula? 40%C, 6.7% H.53.3% . 3) Determine the limiting reactant (LR) and the...
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