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Please show all work on a separate sheet and staple to this page. Clearly show "road...
Problem Set 7 Stoichiometry Calculations Name: Date: Lab Section: General Instructions: Complete the following problems, Circle...
Problem Set 7 Stoichiometry Calculations Name: Date: Lab Section: General Instructions: Complete the following problems, Circle answers and show all work on separate sheet(s) of paper. 5 problems will be chosen randomly for assessing a score on this assignment. Assignment is due at the end of the lab period. 1.) 5.0 g of magnesium metal is burned in excess oxygen to produce magnesium oxide. (a) Write a balanced chemical equation for this reaction with the correct phases of all substances...
HELP WITH B and C please ? (molarity stoich) How many grams of sodium nitrite are...
HELP WITH B and C please ? (molarity stoich)
How many grams of sodium nitrite are needed to make 2.50 L of 1.12 M solution? Calculate the number of moles of the precipitate formed when 525 mL of 0.500 M potassium iodide reacts with excess lead (II) nitrate. Balanced equation:___ Calculate the number of grams of precipitate formed when 2.00 L of 0.400 M calcium chloride reacts with excess silver nitrate. Balanced equation: How many milliliters of a 1.5 M...
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...
Please provide correct work & answers to the following, thank you!! .A student observed that when heated his...
Please provide correct work & answers to the following, thank
you!!
.A student observed that when heated his sample produced condensation on the upper walls of his test tube and changed color. When the sample was added to water it produce a solution with a color very similar to that of the original salt. Explain these observations 2. A student gets a measurement of 30.112 grams when he weighs a dry empty crucible and cover. He then adds an unknown...
2. Mass-mass problems. Show your work and label your answers. a. How many grams of sulfur...
2. Mass-mass problems. Show your work and label your answers. a. How many grams of sulfur dioxide are needed to react with 10.0 g of oxygen gas according to the following UNBALANCED reaction? SO2 + O2 → SO3 b. Aluminum reacts with hydrogen sulfate to produce aluminum sulfite and water. If 32.3 grams of aluminum are used, how many grams of aluminum sulfite can be produced? C Hard water contains calcium sulfate and can be softened by adding sodium carbonate...
1A)The compound magnesium bromide is a strong electrolyte. Write the reaction when solid magnesium bromide is...
1A)The compound magnesium bromide is a strong electrolyte. Write the reaction when solid magnesium bromide is put into water: 1B)The compound zinc sulfate is a strong electrolyte. Write the reaction when solid zinc sulfate is put into water 1C)The compound cobalt(II) chloride is a strong electrolyte. Write the reaction when solid cobalt(II) chlorideis put into water: 1D)You need to make an aqueous solution of 0.171 M potassium iodide for an experiment in lab, using a 300 mL volumetric flask. How...
Help with all questions please Answer all questions on a separate sheet of paper. Show all...
Help with all questions please
Answer all questions on a separate sheet of paper. Show all work and answer all questions completely. Make sure you use the proper number of significant figures and units. Place a box around all answers. 1. (2 points) How many milligrams of potassium dichromate heptahydrate are needed to prepare 50 mL of a 0.0375 M aqueous solution? Describe the procedure for making this solution. 2. (3 points) If 0.125 L of aqueous solution with a...
would yall also please help me find the excess reactant remaining for each? Also, I dont...
would yall also please help me find the excess reactant
remaining for each?
Also, I dont need much of an explanation, I understand the
processes involved with each calculation Im just scared of
answering these questions wrong and would greatly appreciate
someone elses work to compare with my own. Thanks in advance!
A sample of 5.63 g of solid calcium hydroxide is added to 37.0 mL of 0.380 M aqueous hydrochloric acid. Write the balanced chemical equation for the reaction....
To receive credit: please write properly annotated balanced chemical reactions, please show all work using dimensional...
To receive credit: please write properly annotated balanced chemical reactions, please show all work using dimensional analysis and correct significant figures. Just a correct result has no value. To facilitate calculations here molar masses of involved elements to be used: 26.982 74.922 137.327 79.904 Aluminum g/mol Arsenic g/mol Barium g/mol Bromine g/mol 40.078 12.011 35.453 1.008 Calcium g/mol Carbon g/mol Chlorine g/mol Hydrogen g/mol 55.845 207.2 Iron g/mol Lead g/mol Lithium Magnesium 24.305 6.941 g/mol g/mol 14.007 15.999 Manganese 54.938...
I’m not sure what I’ve done wrong since the rest of my calculations were correct, so...
I’m
not sure what I’ve done wrong since the rest of my calculations
were correct, so will someone please explain to me how to solve
these. I’ve tried everything i can think of and nothing is working.
We were unable to transcribe this imagebalanced chemical equation: Pb(NO), (aq) + 2Cl(aq) - PbCl2(s) + 2KNO3(aq) What is the limiting reactant? lead(II) nitrate O potassium chloride The percent yield for the reaction is 80.6%. How many grams of precipitate is recovered? precipitate...
Problem Set 7 Stoichiometry Calculations Name: Date: Lab Section: General Instructions: Complete the following problems, Circle answers and show all work on separate sheet(s) of paper. 5 problems will be chosen randomly for assessing a score on this assignment. Assignment is due at the end of the lab period. 1.) 5.0 g of magnesium metal is burned in excess oxygen to produce magnesium oxide. (a) Write a balanced chemical equation for this reaction with the correct phases of all substances...
HELP WITH B and C please ? (molarity stoich)
How many grams of sodium nitrite are needed to make 2.50 L of 1.12 M solution? Calculate the number of moles of the precipitate formed when 525 mL of 0.500 M potassium iodide reacts with excess lead (II) nitrate. Balanced equation:___ Calculate the number of grams of precipitate formed when 2.00 L of 0.400 M calcium chloride reacts with excess silver nitrate. Balanced equation: How many milliliters of a 1.5 M...
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...
Please provide correct work & answers to the following, thank
you!!
.A student observed that when heated his sample produced condensation on the upper walls of his test tube and changed color. When the sample was added to water it produce a solution with a color very similar to that of the original salt. Explain these observations 2. A student gets a measurement of 30.112 grams when he weighs a dry empty crucible and cover. He then adds an unknown...
2. Mass-mass problems. Show your work and label your answers. a. How many grams of sulfur dioxide are needed to react with 10.0 g of oxygen gas according to the following UNBALANCED reaction? SO2 + O2 → SO3 b. Aluminum reacts with hydrogen sulfate to produce aluminum sulfite and water. If 32.3 grams of aluminum are used, how many grams of aluminum sulfite can be produced? C Hard water contains calcium sulfate and can be softened by adding sodium carbonate...
Help with all questions please
Answer all questions on a separate sheet of paper. Show all work and answer all questions completely. Make sure you use the proper number of significant figures and units. Place a box around all answers. 1. (2 points) How many milligrams of potassium dichromate heptahydrate are needed to prepare 50 mL of a 0.0375 M aqueous solution? Describe the procedure for making this solution. 2. (3 points) If 0.125 L of aqueous solution with a...
would yall also please help me find the excess reactant
remaining for each?
Also, I dont need much of an explanation, I understand the
processes involved with each calculation Im just scared of
answering these questions wrong and would greatly appreciate
someone elses work to compare with my own. Thanks in advance!
A sample of 5.63 g of solid calcium hydroxide is added to 37.0 mL of 0.380 M aqueous hydrochloric acid. Write the balanced chemical equation for the reaction....
To receive credit: please write properly annotated balanced chemical reactions, please show all work using dimensional analysis and correct significant figures. Just a correct result has no value. To facilitate calculations here molar masses of involved elements to be used: 26.982 74.922 137.327 79.904 Aluminum g/mol Arsenic g/mol Barium g/mol Bromine g/mol 40.078 12.011 35.453 1.008 Calcium g/mol Carbon g/mol Chlorine g/mol Hydrogen g/mol 55.845 207.2 Iron g/mol Lead g/mol Lithium Magnesium 24.305 6.941 g/mol g/mol 14.007 15.999 Manganese 54.938...
I’m
not sure what I’ve done wrong since the rest of my calculations
were correct, so will someone please explain to me how to solve
these. I’ve tried everything i can think of and nothing is working.
We were unable to transcribe this imagebalanced chemical equation: Pb(NO), (aq) + 2Cl(aq) - PbCl2(s) + 2KNO3(aq) What is the limiting reactant? lead(II) nitrate O potassium chloride The percent yield for the reaction is 80.6%. How many grams of precipitate is recovered? precipitate...
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