The theoretical value for the standard molar enthalpy of combustion formagnesium is -601.6 kJ/mol. Determine the percent error for your laboratoryinvestigation. Data TableMg (s)MgO (s)Initial Temperature of HCI (aq)("C)Final Temperature of solution("C)Change in temperature("C)23.023.034.838.011.815.0Mass of substance0.130.97(g)Concentration of HCI (aq) = 1.00mol/LVolume of HCI (ag) used in each trial = 0.050L

m=0.13g C= 4.184 J/g°C ∆T=34.8 - 23=11.8°C Heat q= mc∆T =0.13*4.184*11.8=6.41J…

Answered: Determine the percent error for your…

Science

Chemistry

Determine the percent error for your laboratory

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter10: Energy

Section: Chapter Questions

Problem 3ALQ: ou place hot metal into a beaker of cold water. ol type='a'> Eventually what is true about the...

See similar textbooks

Related questions

Q: incorrect way of measuring

A: If you will tilt your volumetric glassware it definitely gives you error result of your…

Q: Determine the Miler indices for the direction represented by an arrow and the planes as shown in…

Q: A calculator is found to have a mass of 118 grams. Using unit analysis, show what the mass of this…

A: Given, mass = 118 gm this measurement change into lb

Q: operations with scientific notation

A: We can add, subtract, multiply, and divide numbers that are written in scientific notation while…

Q: common laboratory operations

A: When a chemist works in a chemical laboratory, he/she should be thought to have some basic knowledge…

Q: B) List five of tools and instrumentations that you have used in the analytical chemistry Lab.

A: Given : Analytical chemistry lab To find : Five tools and instruments Solution : As we know that,…

Q: What is accuracy, in terms of a lab setting?

A: Accuracy is a measure of how close a measurement is to the correct or accepted value of the quantity…

Q: Given that three trials revealed the # of drops in 1.0 mL with a fine tip pipette were 19 drops, 23…

A: Average value of drop per milliliters can be calculated as follows-

Q: please write down its units.

Q: The sum of 91.20 and 92.973 should be reported with—- digit(s) after the decimal point.

A: The numbers given are 91.20 and 92.973.

Q: One millicurie is smaller than one becquerel. true false swer Try Another Version

A: The activity of a radio active element can be expressed in terms of millicurie and becquerel.

Q: e the percentage error in the measurement of the students.

Q: For safety purposes, it is advisable for individuals with long hair to cut their hair short before…

A: The rule of safety for long hair: Tie back long hair. It is not necessarily to cut their hair…

Q: incorrect

A: According to the question, we need to balance the chemical reaction by ion electrode method based on…

Q: A systematic error A arises from the limitations on the ability to make a physical measurement. B is…

A: To define: Systematic error.

Q: How do you solve 0.027=0.34-0.059/2log [Cu2+]

Q: Explain why you wouldn’t use a beaker to accurately measure volume

A: Beaker is glass equipment used in laboratory.

Q: crayon

A: You can see this scale is cm ( centimetres ) so that C and E option are incorrect because of in this…

Q: The variance of chemical experiment .data is square of standard deviation

A: The standard deviation and variance are used to measure the scattering of data from the mean value.…

Q: Cite possible sources of error in an experiment.

A: Answer - According to the question - Common sources of error include instrumental, environmental,…

Q: The filtration techniques was used in limiting experiment:

A: Find the solution given below

Q: Percent Error is defined as: % = [measured value – accepted value] / measured value x 100

A: Percent error is used to get an idea about the possible error in the experiment based on the known…

Q: any liters of ammonia wor

Q: Define the following - Tablet thickness - Tablet Diameter - Percent (%) Deviation

A: 1. Tablet thickness is determined by the diameter of the die. It is measured in mm . 2. Diameter…

Q: Question 7, Saved Listen Systematic error affects the accuracy of a result.

A: Systematic error

Q: Why are percent error values never negative?

A: The percent error is given by: percent error=|(experimental value-theoretical value)/theoretical…

Q: how i find the density of rutheniume metal??

A: density is calculated by using the formula,density (g/ml) = mass (g)/volume (ml)So density is…

Q: Define and compare accuracy and precision.

A: The degree to which the given value is correct and is free from error is termed as accuracy.

Q: If the Day 2 filter paper was not left in the drying oven for long enough (i.e. the time specified…

A: Random error: Random error in experiment measurements are caused by unknown and unpredictable…

Q: Find the density

A: As shown in the picture 2a The reading of volumetric flask is 400ml Picture 2b The reading of…

Q: 50

A: The proper way to take the readings in the graduated cylinder is to record the value at the bottom…

Q: dimensional analysis

Q: and density

Q: A chemist working as a safety inspector find an unmarked bottle in a lab cabinet.

A: Given : Volume of liquid = 0.502 L Mass of liquid = 469 g

Q: [4] INSTRUCTION: Round off the final answer to ONE decimal place.

A: Given- mass of protons = 1.0073amu mass of Neutron = 1.0087amu Atomic mass of Sn =…

Q: Why does the percent-error equation use the absolute value of the error?

A: Percent error = errorAccepted value×100%

Q: a) Define the following petroleum fingerprinting. (iv)Conversion (v) Separation

A: There are several phases in the petrol refining process. In that, there are two processes that are…

Q: Calculate the percent error when a known value of 5.69 is measured to be 5.85

A: Given,Measured value = 5.85Exact or known value = 5.69Percent error can be calculated as:

Q: Describe three (3) source of error in weighing.

A: There are various kinds of errors- 1- instrumental error 2- personal error 3- random error

Q: Common Laboratory Equipment DI

A: Since you have posted multiple apparatus, the labelling of first three apparatus are given. Kindly…

Q: Write about material testing in chemistry (main categories with examples)

A: A question about material testing in chemistry, which is to be accomplished.

Q: ium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the…

A: Mass of empty cylinder = 4.200 g Mass of KCl + cylinder = 71.0 g So, Mass of KCl = 71.0 - 4.20 =…

Q: volume: mL

A: Molarity is defined as total number of moles of solute dissolved in 1000 ml of solution Molarity =…

Q: Report your answer with the proper number of significant figur

A: Report your answer with the proper number of significant figures. Magnesium is used in lightweight…

Q: need help wilth calculating percent relative error. What will be the real value when it comes to…

A: Percentage error is the difference between the estimated number and the actual number when compared…

Q: suggest ways you could improve your accuracy and precision. (density)

A: Measured value is how much close to true value is most accurate measurement. Precision means…

Q: What is the laboratory equipment that is best suited to accurately measure large volume of liquids?…

A: 1. Graduated cylinder is best used for measuring large volumes.

Q: 5. Nitrate test. Draw a flow chart depicting the nitrate test, results, and interpretation.

A: Brown ring complex formation test is the confirmatory test for nitrate ion (NO2-).

Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

The theoretical value for the standard molar enthalpy of combustion for
magnesium is -601.6 kJ/mol. Determine the percent error for your laboratory
investigation.

Data Table
Mg (s)
MgO (s)
Initial Temperature of HCI (aq)
("C)
Final Temperature of solution
("C)
Change in temperature
("C)
23.0
23.0
34.8
38.0
11.8
15.0
Mass of substance
0.13
0.97
(g)
Concentration of HCI (aq) = 1.00mol/L
Volume of HCI (ag) used in each trial = 0.050L

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

9.96 Most first aid "cold packs" are based on the endothermic dissolution of ammonium nitrate in water: NH4NO3(s)NH4+(aq)+NO3(aq) H= 25.69 kJ A particular cold pack contains 50.0 g of NH4NO3 and 125.0 g of water. When the pack is squeezed, the NH4NO3dissolves in the water. If the pack and its contents are initially at 24.0°C, what is the lowest temperature that this bag could reach? (Assume that the ammonium nitrate solution has a specific heat of 4.25J g-l K-l, and that the heat capacity of the bag itself is small enough to be neglected.)
ou place hot metal into a beaker of cold water. ol type='a'> Eventually what is true about the temperature of the metal compared to that of the water? Explain why this is true. i>Label this process as endothermic or exothermic if we consider the system to be the metal. Explain. the water. Explain.
9.29 In which case is heat added to the system: (a) E=43J , w=40J ; or (b) E=31J , w=34J ?
A 5.00 g sample of an unknown salt is dissolved in 50.0 mL of water. During dissolution, the temperature of the solution increases from 24.53 oC to 26.82 oC. Which statement(s) is(are) true? qsurroundings > 0 qsystem < 0 qsystem > 0 qsurroundings < 0 (You can choose more than one)
During an experiment to determine the value of R a student collected the following data:Molarity of HCl 3.00MVolume of HCl 20.3mlMass of Mg 0.0411gVolume before equalization chamber 43.1mlVolume after equalization chamber 42.7mlBarometric pressure 759.1mmHgTemperature 21.9Calculate the following information and show all work.Moles of Mg reacted ____Moles of H2 formed ____Vapor pressure of water 19.8mmHgPressure of H2 from dalton’s law ____Volume of H2 ____Temperature(k) ____Calculated R value _______
In a typical cold pack (used for sports injuries), a salt such as ammonium nitrate is kept in a separate pouch from a bag of water. When the pouch is punctured, the salt readily dissolves in the water, and the pack becomes noticeably cooler to the touch (temperature decreases from room temp to about 5 oC). Based around le Charlier principle conclude the signs for ΔHº, ΔSº, and ΔGº for the solvation of ammonium nitrate in water.
Complete the Table based on the picture (Dissolution of Ammonium Nitrate) Mass of Water = 200g Initial temperature of Water= 20.0°C Final Temperature of Water = 18.13°C q water = q dissolution= mass of solid NH4NO3= moles of solid NH4NO3= ΔH of NH4NO3 dissolution= 25.69 kJ/mol
A common practice in cooing is the addition of salt to boiling water. The boiling point of elevation is described by the equation, which is similar to freezing point depression equation but uses a different constant. imagine that your friend tells you that this is done in order to raise the temperature of the boiling water. If 1.50 kg (1.50L) of water is boiling at 100 degrees celsius how much NaCl (molar mass= 58.44g/mole) would need to be added to the water to increase the boiling point by 1 degree Celsius? Does your friend's explanation make sense?
The quantity of 83.0 g of potassium iodide (KI) is added to water to give a solution with a mass of 150. g. Assume that this solution is very dilute and thus has the same heat capacity as water. The dissolution reaction and the associated heat for potassium iodide is KI (s) -→ K+(aq) + I-(aq) qrx = DHrx = +20.3 kJ. Calculate the change in the temperature of the solution.
The solubility of AgCl(s) in water at 25 °C is 1.33 * 10 - 5 mol/L and its ΔH° of solution is 65.7 kJ>mol. What is its solubility at 50.0 °C?
A student dissolves13.7 g of sodium chloride NaCl in 250.g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0°C to 21.4°C over the course of 4.5 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NaCls -> Na+aq + Cl−aq You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔHrxn per mole of NaCl.
When the environment is contaminated by a toxic or potentially toxicsubstance (for example, from a chemical spill or the use of insecticides), thesubstance tends to disperse. How is this consistent with the second law ofthermodynamics? In terms of the second law, which requires the least work:cleaning the environment after it has been contaminated or trying to prevent the contamination before it occurs? Explain.