During the initial response

Assuming that the leak was a constant amount (meaning the same proportion leaked at all data points), how would the calculated AHvap be affected? Hint: If you are having trouble tracking the effect from Pyap to AHvap. you can try creating a hypothetical graph using your excel data file (use a different file than the one you will submit). Create a new column where you change Pyap according to your answers to previous questions", then calculate a new Ln Pvap- You should graph both the real Ln Pvap and this hypothetical one on the same chart to see how the data compares. Ask yourself what changed and how that would affect AHvap. "For this to work you will need to use a proportion not a value. Example: let's say you decided that Pvap is being lowered so you need to decrease Pyap. You need to lower every Pvap by a proportion (say 10% lower) not an actual number. To do this in excel you can insert a "changed Pyap" column and use a formula such as Pvap cell"0.9 (that would be a 10 % decrease)…

Time required to elute substance Z when N = 1000 = when N = 2000 The two quantities cannot be compared due to insufficient information. when N = 1000 > when N = 2000 %3D when N = 1000 < when N = 2000

Question 5 ( 1) Listen> Why should the syringe be removed from the sensor when setting the initial volume for each trial? So that each trial starts at the same pressure, atmospheric pressure. So that the syringe is not broken while setting the initial volume. O So that the initial volume may be set as accurately as possible. So that the sensor is not broken while setting the initial volume.

You have the following data points which belong to a function of the form y = ae, where b can be positive or negative. ม 13.7 29.6 34.6 x 2.00 4.00 5.00 You wish to determine the value of the constant, b, and to do so you will construct a linear plot. What will you plot against what? y-axis label: x-axis label: From the values of x and y in the table above, calculate the values of the three corresponding data points. Click on the graph below, and use the "Freeform Curves" tool to plot the data. Line segments will automatically connect the points. Enter Solution. What is the numerical value of the constant, b?

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The molar mass of an unknown organic liquid (M - 100) is determined by placing 5 mL of the liquid in a weighed 125-mL conical flask fitted with a piece of Al foil with a pin hole in it. The flask is heated in a boiling water bath until the liquid evaporates to expel the air and fill the flask with the unknown vapor at atmospheric pressure. After cooling to room temperature the flask and its contents are reweighed. The uncertainty in which piece of apparatus causes the largest percentage error in the molar mass? (A) balance (+0.01 g) (B) barometer (+0.2 mm Hg) (C) flask (+1.0 mL) (D) thermometer (+0.2 °C) Please explain reasoning quantitatively and qualitatively. Thank you!

Convert 122.355s into ms

A community member living in a highly populated city has asthma, which increases sensitivity to certain air pollutants. The AQI value for a particular day is 45. Which statement describes the most appropriate reaction of this community member? Because the air quality value is considered unhealthy for all groups, the community member decides to stay indoors that day. Because the air quality value is considered unhealthy for all groups, the community member decides to go about a normal daily routine. Because the air quality value is considered unhealthy for sensitive groups, the commu- nity member decides to wear a mask outside for additional protection. Because the air quality value is considered satisfactory, the community member decides to go about a normal daily routine.

Solve with steps

Chem 101-Midterm exam 2 (2) Hi Ferit, when you submit this form, the owner will be able to see your name and email address. Calculate the mass of the air contained in a room that measures 1.50 m x 2.50 mx 3.00 m (density of air = 1.82 g/dm3 at 25°C). (8 Points) 20.475 kg 30.273 kg O 10.578 kg 47.88 kg A metal melts at 545.0°C. What temperature is this in K and °F? (7 Points)

I am a bit lost on this one. Can you please show baby steps with cancelling units? The collision cross section for neon is 0.24 nm2.Calculate the mean free path (in nanometers), between collisions for neon atoms at a pressure of 1.00 atm and a temperature of 31°C.    λ = _______ nm.

10:15 PM Tue Sep 12 12.0 12.0 gtt ml A patient is to receive: 600.0 mL IV fluid over 8.00 hours. The drop factor for the tubing is 12.0 gtt/mL. What is the correct flow rate setting in drops per min ? (1 drop = 1 gtt) stt mL 1 drops 1 att 8.00 ADD FACTOR x( ) 96.0 drop X 0.833 900 1 1 Question 4 of 5 DELETE 9.60 drops stt drop/gtt mL/hr 1.25 600.0 120 0.104 15.0 60 X gtt/mL ANSWER 0.0667 mL RESET 2 1 drop/min Submit 12.0 54% L 375

A volumetric calcium analysis on triplicate samples of the blood serum of a patient believed to be suffering from a hyperparathyroid condition produced the following data: mmol Ca/L = 3.15, 3.25, 3.26. What is the 95% confidence interval for the mean of the data, assuming no prior information about the precision of the analysis?

The anserw is D. I need help understanding and what formula to use

Calculate the volume of the flask using the mass of water which filled the flask and the density of water at the measured temperature. In addition to the volume of the flask, you will need to add 3.0 mL to account for the volume of the tube that leads to the pressure sensor.

i)16O and 18O are two different isotopes of oxygen. What is  ONE IS TRUE about 18O? it less easily evaporated than 16O it is more volatile and reactive than 16O it is lighter than 16O it is more commonly occurring than 16O II) Ice core samples taken from Antarctica have been used to estimate changes in surface temperatures and the atmospheric concentrations of carbon dioxide and methane. This data indicates that when the temperature is relatively warm, the amounts of carbon dioxide and methane are ___________ Select one: relatively low (negative correlation) sometimes high, sometimes low (no correlation) relatively high (positive correlation) III) The answer to the previous above question indicates that ___________ . Select one: high atmospheric concentrations of carbon dioxide and methane might lead to warmer temperatures high atmospheric concentrations of carbon dioxide and methane might lead to cooler temperatures there is no…

#11

Basic Analytical Chemistry - Evaluation of experimental data

The Beirut Explosion:On August 4, 2020, an explosion rocked the Port of Beirut, Lebanon, sending a mushroom cloud high into the air and a sonic blast outward through the city. At least 200 people were killed and around 5000 were injured. The explosion created a 460-foot-wide crater and a shockwave that blew out windows as far as 5 miles from the port. It was heard as far away as Cyprus, 125 miles across the Mediterranean Sea. U.S. seismologists at the United States Geological Survey registered it as the equivalent of a 3.3–magnitude earthquake. The source was found to be a stockpile of 2750 metric tons of ammonium nitrate that was being stored in a warehouse on the port. A fire had broken out nearby shortly before the explosion. What is actually happening in one of these explosions? Pure ammonium nitrate undergoes a decomposition reaction into gaseous dinitrogen monoxide and water vapor that occurs at or above temperatures of 443 K.2 (ΔH = –36 kJ)1. Write and balance the chemical…

A chemical synthesis was carried out four times, resulting in yields of 51.2%,51.2%, 57.4%,57.4%, 48.1%,48.1%, and 44.6%.44.6%. Calculate the range, mean, and average deviation of these values.

10:40 AM Fri Mar 3 Virtual Lab Expt. #3 Density and Specific Gravity 3. Density of metal rounds (steel) The mass in gram of three metal round (steel) provided is measured one at a time and data entered in Table 3, under column 2, Replications #1, #2, #3, respectively. Overflow-cup with a drain-nozzle is placed on a bench above the water sink and filled with water until excess water flows out through the nozzle and levels off. After the excess water stops dripping out of the overflow-cup, an empty beaker is held under the nozzle with one hand and the metal round, of which mass entered in Rep #1, is gently dropped in the water with the other hand; the metal will displace a fraction of the water and water flows out through the nozzle into the beaker. The content of the beaker is then poured into a small, graduated cylinder, and the volume is measured in ml and data recorded under volume of metal column. The experiment described for Rep #1 is repeated in the same manner for metal rounds 2,…

What is the percent error of the Ksp of Ca(OH)2 if the experimental value is 9.1 x 10^-5 and the accepted value is 5.5 x 10^-6?