The true mass of a reference brass weight is known to be 99.98 g. In an...
The true mass of a reference brass weight is known to be 99.98 g. In an experiment, a student determines the mass of this reference weight to have a mass of 100.01 g. What is the percent error in the mass determination done by this student? Express your answer using only a number or numbers without text. Report your result in decimal notation and to the proper number of significant figures. If your result is smaller than 0 use a negative sign! All numbers are measured.
(I have tried this question three times with 0.030, 0.030006, and 0.03000. They were all marked wrong and im not sure what I have done wrong)
Homework Answers
The percentage error for the given experiment is calculated and explained as below.
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The true mass of a reference brass weight is known to be 99.98
g. In an...
The molecular weight of a compound is typically indicated by the heaviest peak on a mass...
The molecular weight of a compound is typically indicated by the heaviest peak on a mass spectrum, which i presumed to correspond to the molecular ion (M*). For smaller compounds, the heaviest peak tends to also be the most intense peak. The lighter peaks in the spectrum result from fragmentation of the molecule into smaller ions. Since peak intensity correlates to the relative stability of the ions produced, the peaks of the ionized fragments can be more intense than the...
Im trying to figure out how to do these three questions, im not positive of the...
Im trying to figure out how to do these three questions, im not
positive of the formulas and cant find them in my notes. I did come
up with an answer for number 20. but im not positive if i worked
thru it right or not. i converted N to lbs (8) then got an answer
of 7.4 seconds, if thats right please let me know, if it isnt maybe
you can help me with where i may have gone...
for question 1 the molar mass of unknown is 102g/mol hation by Freezing Point Depression Vernier...
for
question 1 the molar mass of unknown is 102g/mol
hation by Freezing Point Depression Vernier Logger Pro for Windows Section Post-Laboratory Questions (Use the space provided and additional paper if necessary. Record your nemerical answers in the boxes provided.) 1. Obtain the correct molar mass of your unknown from your laboratory instructor. Calculate the percent error in the molar mass that you found. Torg/mol percent error, 2. A student determined the freezing point of pure t-butyl alcohol following the...
(Magnetic Force on a Wire) A horizontal, current-carrying wire of mass m = 40.0 g is...
(Magnetic Force on a Wire) A horizontal,
current-carrying wire of mass m = 40.0 g is free to slide without
friction along two vertical conducting rails spaced l = 80.0 cm
apart as in Figure. A uniform magnetic field of B = 1.20 T is
directed into the plane of the drawing. What magnitude and
direction (to the right or to the left) must the current have if
the force exerted by the magnetic field on the wire is just...
Data Table 1 Mass of flask and oxalic acid (g) 117.43 Mass of empty flask (g)...
Data Table 1 Mass of flask and oxalic acid (g) 117.43 Mass of empty flask (g) 116.93 Mass of oxalic acid (g) 0.5 Moles of oxalic acid (mol) Final volume of NaOH (mL) 17 Initial volume of NaOH (mL) 5 Volume of NaOH used (mL) 12 Moles of NaOH (mol) Molarity of NaOH (M) Data Table 2 Mass of flask and vinegar (g) 126.61 Mass of empty flask (g) 121.63 Mass of vinegar (g) 4.98 Final volume of NaOH (mL)...
Procedure 1, 2, 3 Mass of a clamp: 21.5 True mass of meter stick: _133.6 g...
Procedure 1, 2, 3 Mass of a clamp: 21.5 True mass of meter stick: _133.6 g Center of mass of meter stick: _50 cm True weight of unknown mass: _212.99_ Procedure 4 Position of the 100-g mass: 10.0 cm Position of equilibrium: _30.9 cm Mass of the stick from method of torques: Procedure 5 Position of the 100-g mass: 10.0 cm Position of the 200-g mass: _90.0 cm Position of equilibrium of meter stick: Procedure 6 Position of unknown mass...
1) Cite the difference between atomic mass and atomic weight. 2) Without consulting any figures or...
1) Cite the difference between atomic mass and atomic weight. 2) Without consulting any figures or tables, determine whether each of the electron configurations given below is an inert gas, a halogen, an alkali metal, an alkaline earth metal, or a transition metal. Justify your choices. (a) 1s22s22p63523p63d7452 (d) 1s22s22p6352 (b) 1s22s22p63s23p6 (e) 1s22s22p63s23p63d2452 (C) 1s22s22p5 (1) 1s22s22p63523p6451 3) (a) What type(s) of bonding would be expected for each of the following materials; brass (a copper- zinc alloy), rubber, barium...
The weight of the tomato is 105 g. Please work problem. I can't figure out what...
The weight of the tomato is 105 g.
Please work problem. I can't figure out what I'm doing wrong
Hints ion w= 13.0 J of Submit My Answers Give Up IS Correct The energy transferred to the tomato by doing work on it increases its potential energy because the tomato is now at a greater height or position relative to the ground. used Kinetic energy Kinetic energy, Ek is gr en by he formula醜 1 mu2 where m is mass...
Complete the stoichiometry table using the starting values provided. reagent molecular weight mass (g) mmoles equivalents...
Complete the stoichiometry table using the starting values provided. reagent molecular weight mass (g) mmoles equivalents density (g/mL) - vol. (ML) glycerol tripleate 0.589 . sodium hydroxide 0.533 water 2.185 ethanol (95%) 0.816 2.117 theoretical product sodium oleate glycerol AM In your lab notebook, you should complete the written portion of the prelab which includes a title, date, reaction equation, reagent table and plan of procdure. I confirm that I have read the terms of the Ohio State University Department...
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown...
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown to the student, the balance was not zeroed but weighed 0.100 g too high throughout the experiment. Would the calculated val- ue for the density of the unknown liquid be correct? That is, would it be equal to, higher than, or lower than the true value. Explain your answer in clear and correct English. 16 LABORATORY EXPERIMENTS IN GENERAL CHEMISTRY ed in question 4...
The molecular weight of a compound is typically indicated by the heaviest peak on a mass spectrum, which i presumed to correspond to the molecular ion (M*). For smaller compounds, the heaviest peak tends to also be the most intense peak. The lighter peaks in the spectrum result from fragmentation of the molecule into smaller ions. Since peak intensity correlates to the relative stability of the ions produced, the peaks of the ionized fragments can be more intense than the...
Im trying to figure out how to do these three questions, im not
positive of the formulas and cant find them in my notes. I did come
up with an answer for number 20. but im not positive if i worked
thru it right or not. i converted N to lbs (8) then got an answer
of 7.4 seconds, if thats right please let me know, if it isnt maybe
you can help me with where i may have gone...
for
question 1 the molar mass of unknown is 102g/mol
hation by Freezing Point Depression Vernier Logger Pro for Windows Section Post-Laboratory Questions (Use the space provided and additional paper if necessary. Record your nemerical answers in the boxes provided.) 1. Obtain the correct molar mass of your unknown from your laboratory instructor. Calculate the percent error in the molar mass that you found. Torg/mol percent error, 2. A student determined the freezing point of pure t-butyl alcohol following the...
(Magnetic Force on a Wire) A horizontal,
current-carrying wire of mass m = 40.0 g is free to slide without
friction along two vertical conducting rails spaced l = 80.0 cm
apart as in Figure. A uniform magnetic field of B = 1.20 T is
directed into the plane of the drawing. What magnitude and
direction (to the right or to the left) must the current have if
the force exerted by the magnetic field on the wire is just...
Procedure 1, 2, 3 Mass of a clamp: 21.5 True mass of meter stick: _133.6 g Center of mass of meter stick: _50 cm True weight of unknown mass: _212.99_ Procedure 4 Position of the 100-g mass: 10.0 cm Position of equilibrium: _30.9 cm Mass of the stick from method of torques: Procedure 5 Position of the 100-g mass: 10.0 cm Position of the 200-g mass: _90.0 cm Position of equilibrium of meter stick: Procedure 6 Position of unknown mass...
1) Cite the difference between atomic mass and atomic weight. 2) Without consulting any figures or tables, determine whether each of the electron configurations given below is an inert gas, a halogen, an alkali metal, an alkaline earth metal, or a transition metal. Justify your choices. (a) 1s22s22p63523p63d7452 (d) 1s22s22p6352 (b) 1s22s22p63s23p6 (e) 1s22s22p63s23p63d2452 (C) 1s22s22p5 (1) 1s22s22p63523p6451 3) (a) What type(s) of bonding would be expected for each of the following materials; brass (a copper- zinc alloy), rubber, barium...
The weight of the tomato is 105 g.
Please work problem. I can't figure out what I'm doing wrong
Hints ion w= 13.0 J of Submit My Answers Give Up IS Correct The energy transferred to the tomato by doing work on it increases its potential energy because the tomato is now at a greater height or position relative to the ground. used Kinetic energy Kinetic energy, Ek is gr en by he formula醜 1 mu2 where m is mass...
Complete the stoichiometry table using the starting values provided. reagent molecular weight mass (g) mmoles equivalents density (g/mL) - vol. (ML) glycerol tripleate 0.589 . sodium hydroxide 0.533 water 2.185 ethanol (95%) 0.816 2.117 theoretical product sodium oleate glycerol AM In your lab notebook, you should complete the written portion of the prelab which includes a title, date, reaction equation, reagent table and plan of procdure. I confirm that I have read the terms of the Ohio State University Department...
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown to the student, the balance was not zeroed but weighed 0.100 g too high throughout the experiment. Would the calculated val- ue for the density of the unknown liquid be correct? That is, would it be equal to, higher than, or lower than the true value. Explain your answer in clear and correct English. 16 LABORATORY EXPERIMENTS IN GENERAL CHEMISTRY ed in question 4...
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