Homework Answers
![Solution : = 24.7 Observed value Accepted value = 24.3 So, percent error x 100% | observed value - Accepted value] Accepted v](http://img.homeworklib.com/questions/fdddf500-c25a-11eb-91fa-210d3a7ca0c7.png?x-oss-process=image/resize,w_560)
Add Answer to:
In an experiment, the gram atomic mass of magnesium was determined to be 24.7. Compared to...
c mass18 In this experiment you determined the mass of oxygen that combined with a weighed...
c mass18 In this experiment you determined the mass of oxygen that combined with a weighed mass of magnesium) by subtraction: mass of product minus mass of original magnesium = mass of oxygen that combined. As a result of this procedure, anything that was in the crucible at the end of the experiment, along with the magnesium oxide product, would cause an error in figure that is recorded as "mass of oxygen". Would extra mass in the crucible cause the...
57 ldeal Gas Law: Estimation of Molar Mass of Magnesium Experiment 8 QUESTIONS A POST LAB...
57 ldeal Gas Law: Estimation of Molar Mass of Magnesium Experiment 8 QUESTIONS A POST LAB A 0.0524-g sample of magnesium is reacted with 25 mL of 3.0 M sulfuric acid as described in the experimen- tal section. The resulting hydrogen gas is colllected over water and is found to have a volume of 53.6 mL. The temperature is 25 °C and the atmospheric pressure is 762.12 mm Hg. The column of water height inside the graduated cylinder is found...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questio...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
the same mass and mass IJ pro 18. The charge on an electron was determined in...
the same mass and mass IJ pro 18. The charge on an electron was determined in the A) cathode ray tube, by J. J. Thompson B) Rutherford gold foil experiment C) Millikan oil drop experiment D) Dalton atomic theory E) atomic theory of matter 19. All atoms of a given element have the same
In an experiment, a student found 18.6% by mass of water in a sample of BaCl2...
In an experiment, a student found 18.6% by mass of water in a sample of BaCl2 * 2H2O. The accepted value is 14.8%. How would the student calculate experimental percent error? a. 14.8/18.6*100 b. (18.6-14.8)/14.8*100 c. (18.6-14.8)/18.6*100 d. 18.6/14.8*100
Magnesium chloride commonly occurs as a hexahydrate. a. (5 pt) Write the chemical formula for magnesium...
Magnesium chloride commonly occurs as a hexahydrate. a. (5 pt) Write the chemical formula for magnesium chloride hexahydrate. (10 pt) Calculate the formula weight for magnesium chloride hexahydrate. Express your answer in atomic mass units to the nearest hundreth of an amu Show your work. b. 0.01 amu). (10 pt) Calculate the percent by mass of magnesium chloride in magnesium chloride hexahydrate. Express your answer in % as three significant digits. Show your work. c. (10 pt) Calculate the percent...
23. Magnesium oxide (Mg0) forms wh (a) Ir 1.25 g og MgO g of (b) What is the mass percent of O in...
Two Chem word questions!?
23. Magnesium oxide (Mg0) forms wh (a) Ir 1.25 g og MgO g of (b) What is the mass percent of O in Mg0? (c) How many micrograms of oxygen are in 534 kg of Mg en magnesium metal burns in air contains 0.754 g of Mg what is the mass percent of Mg in Mg0? 24. Boron has two naturally occurring isotopes: Bo ron-10 and Boron-11. If the atomic mass of boron(listed on the periodic...
EXPERIMENT 1 Experimental Error and Data Analysis (c) In an experiment to determine the value of...
EXPERIMENT 1 Experimental Error and Data Analysis (c) In an experiment to determine the value of , a cylindrical can of potato chips is measured to have an average value of 6.90 cm for its diameter and an average value of 22.29 cm for its circumference. What is the value of n to the correct number of significandfigures? (Hint: c=d, r=? Solve for the unknown first)) Experimental value of ER 2. Expressing Experimental Error (a) If the accepted value of...
If the concentration of total calcium and magnesium in the Mississippi water is in the range...
If the concentration of total calcium and magnesium in the Mississippi water is in the range of 3.5 mm, what is the concentration of these ions in mg/L? Show your work; atomic weight of Ca is 40.1 and that of Mg is 24.3. a) 90 mg/L b) 100 mg/L c) 120 mg/L d) 225 mg/L e) None of the above
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
c mass18 In this experiment you determined the mass of oxygen that combined with a weighed mass of magnesium) by subtraction: mass of product minus mass of original magnesium = mass of oxygen that combined. As a result of this procedure, anything that was in the crucible at the end of the experiment, along with the magnesium oxide product, would cause an error in figure that is recorded as "mass of oxygen". Would extra mass in the crucible cause the...
57 ldeal Gas Law: Estimation of Molar Mass of Magnesium Experiment 8 QUESTIONS A POST LAB A 0.0524-g sample of magnesium is reacted with 25 mL of 3.0 M sulfuric acid as described in the experimen- tal section. The resulting hydrogen gas is colllected over water and is found to have a volume of 53.6 mL. The temperature is 25 °C and the atmospheric pressure is 762.12 mm Hg. The column of water height inside the graduated cylinder is found...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
the same mass and mass IJ pro 18. The charge on an electron was determined in the A) cathode ray tube, by J. J. Thompson B) Rutherford gold foil experiment C) Millikan oil drop experiment D) Dalton atomic theory E) atomic theory of matter 19. All atoms of a given element have the same
Magnesium chloride commonly occurs as a hexahydrate. a. (5 pt) Write the chemical formula for magnesium chloride hexahydrate. (10 pt) Calculate the formula weight for magnesium chloride hexahydrate. Express your answer in atomic mass units to the nearest hundreth of an amu Show your work. b. 0.01 amu). (10 pt) Calculate the percent by mass of magnesium chloride in magnesium chloride hexahydrate. Express your answer in % as three significant digits. Show your work. c. (10 pt) Calculate the percent...
Two Chem word questions!?
23. Magnesium oxide (Mg0) forms wh (a) Ir 1.25 g og MgO g of (b) What is the mass percent of O in Mg0? (c) How many micrograms of oxygen are in 534 kg of Mg en magnesium metal burns in air contains 0.754 g of Mg what is the mass percent of Mg in Mg0? 24. Boron has two naturally occurring isotopes: Bo ron-10 and Boron-11. If the atomic mass of boron(listed on the periodic...
EXPERIMENT 1 Experimental Error and Data Analysis (c) In an experiment to determine the value of , a cylindrical can of potato chips is measured to have an average value of 6.90 cm for its diameter and an average value of 22.29 cm for its circumference. What is the value of n to the correct number of significandfigures? (Hint: c=d, r=? Solve for the unknown first)) Experimental value of ER 2. Expressing Experimental Error (a) If the accepted value of...
If the concentration of total calcium and magnesium in the Mississippi water is in the range of 3.5 mm, what is the concentration of these ions in mg/L? Show your work; atomic weight of Ca is 40.1 and that of Mg is 24.3. a) 90 mg/L b) 100 mg/L c) 120 mg/L d) 225 mg/L e) None of the above
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
Most questions answered within 3 hours.
-
4. Determine the theoretical yield of P2O5, when 3.07 g of P
reacts with 6.09 g...
asked 1 hour ago -
Explain the PEST analysis and how a marketer would use this when
putting together a marketing...
asked 1 hour ago -
S sells property with a $500 basis to B for $450, and B later
sells the...
asked 2 hours ago -
True/False Questions
1.
In interpreting an agreement, courts generally apply a
subjective standard.
2.
If, after...
asked 1 hour ago -
On January 1, 20X7, Green Corp. paid $1,020,000 to acquire Wax
Co. Wax maintained separate incorporation....
asked 2 hours ago -
C++
Write a class Fraction that defines adding, subtracting,
multiplying, and dividing fractions by overloading standard...
asked 4 hours ago -
This java code won't run and I can't figure out the problem with
it. Please help...
asked 5 hours ago -
Trace the following recursive methods:
a) isPal with the string “abccda”
b) isAnBn with the string...
asked 6 hours ago -
1. Which of the following is false about photosynthesis?
A. ATP is the molecule used to...
asked 6 hours ago -
A simple random sample of size n=64 is obtained from a
population with a mean of...
asked 7 hours ago -
(2 dimensions, 1 object, 2 accelerations)
1) A projectile is thrown with a wind. The wind...
asked 8 hours ago -
Brian makes $34,100 per year. How much can Brian expect to
contribute to FICA taxes in...
asked 9 hours ago