(x is percent, M is molecule mass)
why the molecular weight is expressed like that?
why it is not X(MCaO) + (1-X)(MZrO2)??
I dont understand why there is 1/2MZr help me
Homework Answers
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(x is percent, M is molecule mass)
why the molecular weight is expressed like that?
why...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
After analyzing a mass spectrum you conclude that the molecule being analyzed has the molecular formula...
After analyzing a mass spectrum you conclude that the molecule being analyzed has the molecular formula C4H8; however, there are five possible constitutional isomers with that same molecular formula. The only thing that stands out in the mass spectrum is a strong fragment signal at m/z=41. Determine the possible constitutional isomers for C4H8 and explain which isomer matches the mass spectrum. Possible constitutional isomers for C_4H_8 Which isomer do you think you have? Why?
Mass-String-Damper system: The molecular bond due to intermolecular forces is flexible. A diatomic molecule like oxygen...
Mass-String-Damper system:
The molecular bond due to intermolecular forces is flexible. A diatomic molecule like oxygen (O_2), if disturbed, will oscillate to and fro the equilibrium position ( minimum potential energy) approximated by the equation: mu d^2x/dt^2+kx=0 Where mu is the reduced mass of the system mu = m_02 / 2 and k is the spring constant. The mu for the Oxygen molecule (O_2) is 1.33 x 10^-26 kg and k =1195 N/m. What is the natural frequency of O_2...
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...
Effect of Molecular weight on Diffusion Time (Minutes) 0 10 20 30 40 50 60 Percent...
Effect of Molecular weight on Diffusion Time (Minutes) 0 10 20 30 40 50 60 Percent increase Methylene Blue 14.022.0125.0 20.0 20.-22 -100 9.0|14.0/16.0 18.0 /19.0/19.000122.221 Potassium Permanganate According to your data, what molecule (methylene blue or potassium permanganate) diffused the fastest? Check Your Understanding 1.1 Based on the data, what generalization can be made about the relationship between diffusion rate and molecular weight? 1.2 By observing the rate of diffusion from the data collected, does diffusion rate change over...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of your alcohol that you started with = 1. 9 b) The molecular weight of your alcohol = 102.17 gimo ne number of moles of your alcohol in your sample that you used to start the reaction = 0.01297 more d) The number of molecules of your alcohol in your sample that you used to start the reaction = (6.023 x 10 molecules 0.01297 moles)...
5. A diatomic molecule (like H2) can be modeled as two atoms of equal mass m,...
5. A diatomic molecule (like H2) can be modeled as two atoms of equal mass m, connected by a rigid massless rod of length a. The system is free to rotate in 3-D. I claim the moment of inertia of this molecule around its ceater of mass is a. (Feel free to convince yourself that factor of k is coect!) Big hint if you 're having trouble getting started: this problem is directly related to McIntyre's Ch A) The energy...
This is for my mass spectrometry lab report. I have to figure out the m/z of...
This is for my mass spectrometry lab report.
I have to figure out the m/z of the base peak and in order to
do so I need to know where the weakest bond is for each compound so
I can split them up.
Please do that for me for each of the compound. I just want to
double check my work.
I’ve attached on the second picture an example of one of the
compound.
Thank you ahead of time!!!
Step...
2 Experiment: In the experiment conducted, the mass of the counter weight M was chosen to...
2 Experiment: In the experiment conducted, the mass of the counter weight M was chosen to be 50.0 +/- 0.1 g The mass of the rubber stopper was measured to be 12.0 +/- 0.1 g The stopper was spun at five different values of the radius (measured with a meter stick). For each value of r, the time to complete 10 full revolutions was measured with stopwatch. The following data was collected: 40.0 60.0 80.0 100.0 (cm) 1) 120.0 10.74...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
After analyzing a mass spectrum you conclude that the molecule being analyzed has the molecular formula C4H8; however, there are five possible constitutional isomers with that same molecular formula. The only thing that stands out in the mass spectrum is a strong fragment signal at m/z=41. Determine the possible constitutional isomers for C4H8 and explain which isomer matches the mass spectrum. Possible constitutional isomers for C_4H_8 Which isomer do you think you have? Why?
Mass-String-Damper system:
The molecular bond due to intermolecular forces is flexible. A diatomic molecule like oxygen (O_2), if disturbed, will oscillate to and fro the equilibrium position ( minimum potential energy) approximated by the equation: mu d^2x/dt^2+kx=0 Where mu is the reduced mass of the system mu = m_02 / 2 and k is the spring constant. The mu for the Oxygen molecule (O_2) is 1.33 x 10^-26 kg and k =1195 N/m. What is the natural frequency of O_2...
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...
Effect of Molecular weight on Diffusion Time (Minutes) 0 10 20 30 40 50 60 Percent increase Methylene Blue 14.022.0125.0 20.0 20.-22 -100 9.0|14.0/16.0 18.0 /19.0/19.000122.221 Potassium Permanganate According to your data, what molecule (methylene blue or potassium permanganate) diffused the fastest? Check Your Understanding 1.1 Based on the data, what generalization can be made about the relationship between diffusion rate and molecular weight? 1.2 By observing the rate of diffusion from the data collected, does diffusion rate change over...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of your alcohol that you started with = 1. 9 b) The molecular weight of your alcohol = 102.17 gimo ne number of moles of your alcohol in your sample that you used to start the reaction = 0.01297 more d) The number of molecules of your alcohol in your sample that you used to start the reaction = (6.023 x 10 molecules 0.01297 moles)...
5. A diatomic molecule (like H2) can be modeled as two atoms of equal mass m, connected by a rigid massless rod of length a. The system is free to rotate in 3-D. I claim the moment of inertia of this molecule around its ceater of mass is a. (Feel free to convince yourself that factor of k is coect!) Big hint if you 're having trouble getting started: this problem is directly related to McIntyre's Ch A) The energy...
This is for my mass spectrometry lab report.
I have to figure out the m/z of the base peak and in order to
do so I need to know where the weakest bond is for each compound so
I can split them up.
Please do that for me for each of the compound. I just want to
double check my work.
I’ve attached on the second picture an example of one of the
compound.
Thank you ahead of time!!!
Step...
2 Experiment: In the experiment conducted, the mass of the counter weight M was chosen to be 50.0 +/- 0.1 g The mass of the rubber stopper was measured to be 12.0 +/- 0.1 g The stopper was spun at five different values of the radius (measured with a meter stick). For each value of r, the time to complete 10 full revolutions was measured with stopwatch. The following data was collected: 40.0 60.0 80.0 100.0 (cm) 1) 120.0 10.74...
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