Practice 1.3 Microscale of volumes of solutions with different densities. For this exercise we will simulate the preparation of a reaction in a 0.5ml tube, using a micropipette with a range 1-20 ul. The idea is to create a "microscale" of volumes of colored solutions with different densities. 1. Use the table below to add the volumes in the tubes. Calculate the volume you need where they appear the X. Solución 3 (5%) Solución 1 (50%) 10 μι X = Solución 2 Solución 4 Volumen (25%) 8 ul 10 ul (0%) Total Tubo A 20 μι 20 ul Tubo B 2 ul

Practice 1.3 Microscale of volumes of solutions with different densities. For this exercise we will simulate the preparation of a reaction in a 0.5ml tube, using a micropipette with a range 1-20 ul. The idea is to create a "microscale" of volumes of colored solutions with different densities. 1. Use the table below to add the volumes in the tubes. Calculate the volume you need where they appear the X. Solución 3 (5%) Solución 1 (50%) 10 μι X = Solución 2 Solución 4 Volumen (25%) 8 ul 10 ul (0%) Total Tubo A 20 μι 20 ul Tubo B 2 ul

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.95PAE: 2.95 Engineers who design bicycle frames are familiar with the densities of aluminium (2.699 g/cm3),...

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A volume of 25.00 mL of the original solution was diluted to a total volume of 100.0 mL and then 10.00 mL of that diluted solution was diluted to a total volume of 15.00 mL to make the sample for analysis. If a student in lab found that the solution for spectroscopic analysis had a concentration of (4.0x10^-5) M, what was the concentration of the original solution, in units of M?
Illustrate the steps in the scientific method using Rosenbergs discovery of the anticancer activity of cisplatin.
2.95 Engineers who design bicycle frames are familiar with the densities of aluminium (2.699 g/cm3), steel (7.87 g/cm3), and titanium (4.507 g/cm3). How does this information compare with Figure 2.12, and what would it suggest for changes in this figure if more shades were used for the density colour-coding? (Iron is the principal component of steel)
1. What is a spectrophotometer used for in a cobalt chloride solution analysis?
Chemistry A suspension was prepared by mixing spherical gum grains with a density of 1.206 gcm-3 and a radius of 0.212 μm and water with a density of 0.999 gcm-3 at 15˚C. Since the number of particles determined microscopically at 5 μm and 35 μm heights from the base is 100 and 47, respectively, in the same time, calculate Avagadro's constant (g= 9.8 m s-2, μm= 10-6 m)
It has been estimated that there is 4.00 × 10-4 mg of gold per liter of seawater. At price of $19.40/g, what would be the value of the gold in 7.53 km3 (1 km3 = 1 × 1015 cm3) of the ocean?
given your experience in mass determinations (Experiment 1) and with volumetric glassware (Experiment 2), which factor used in calculating the density - mass or volume - is likely to be measurable with greater precision?

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