MC7 The average kinetic energy of the molecules in a gas at room temperature is about...
You have a bacterial culture solution. When you directly measured the OD600, of the culture solution, it was 3. Then, you performed a 10-fold dilution and measured the OD600 of the diluted solution, which was 0.5. Thirdly, you performed another 10-fold dilution and measured the OD600 of the diluted solution, which was 0.07. Assuming that OD 600 =1 is equivalent to 10^9 cells/ml, how many cells do you have in 1ml of the original culture? You have a bacterial culture...
lab How many molecules of water are you drinking if you were to consume 450mL bottle of H20? 1. What is the volume of water expressed in L and mL? 2. Calculate the mass of water in g (Hint: we did this in week 1) a. Express mass in mg and kg 3. Find/Calculate the molecular weight of water (H20) 4. Calculate how many moles of water are in the bottle (450mL) 5. Calculate how many molecules of water you...
If the average kinetic energy of the molecules of a gas at 10 °C is E, find the temperature (in unit of °C) needed in order to increase the average kinetic energy to become 2E.
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3 RT rms speed where R = 8.314 J/(mol-K) and Mis molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-mº/s2). What is the rms speed of F,...
emperature. energy of gas molecules will with aln) At constant temperature, the average kinetic energy of Eas molecules will from 22.2 tooratory, a student finde that it takes 23.6 J to ineroase the temperature of solid tungaten according to the following reaction? (8 551 wbmuch heat is released when 75 g of oetane, Cahls, is burned completely in oxygen if the Δ11- (12) Using Hess's Law and the following enthalpies of reaction, find the unknown Minn. 8. (O) What volume...
Prelab Questions 1. a. (10) Determine the a) mass of the solute and b) volume of conc. HCl you are going to a) weigh out and b) measure with a graduated cylinder to create 1L of 100.0 ppm stock solution of Acetylsalicylic acid (ASA) (from the pure powder) in a 2%(W/V) HCI. Show your calculation. C at:.. HALI Procedure - External Standards 1. First make 2% V/v HCI. You will make this three times. Transfer to two plastic containers (use...
1.. Which statement is correct about the changes in potential energy and kinetic energy when two N atoms combine to form an N2 molecule? Group of answer choices a. The potential energy becomes more negative and the kinetic energy increases. b. The potential energy becomes more positive and the kinetic energy decreases. c. The potential energy becomes more positive and the kinetic energy increases. d. The potential energy becomes more negative and the kinetic energy decreases. 2.. You take solid...
please show a solution Determine the kinetic energy of a gas at temperature 90 degree C, whose constituents are molecular oxygen. (O atomic number is 8, atomic mass is 16, 1 U=1.66 times 10^-27 kg
Please answer #2. I'm unsure how its done ete od SOCK Solutions (the concentrations are known you prepare will be used in assessing concent (0.07wv) to be used in developing a spectrophotometric assay for this drug. The standard curve your disposal a primary standard solution of the drug in sal w be used in assessing concentrations of the drug in samples having unknown concentrations. You have at this STD). The linear range of the assay for this drug a primary...
1. Select the two compounds that are more likely to be a gas at room temperature (as opposed to a liquid). CH4 CH3OH C2H6 H2O 2. The separation of charges within a polar molecule is called a(n) ________. polar bond strong attraction dipole ionic bond dipole-dipole 3. Which of the following intermolecular forces best describes why nonpolar molecules like gasoline (C8H18) have only limited solubility in water? dipole-dipole ion-dipole Both dipole-dipole and induced dipole-induced dipole induced dipole-induced dipole dipole-induced dipole...