On a lab quiz, a student listed the steps to properly use a pipet. Which step is incorrect? O Pull up a third volume past the calibration mark and quickly replace the bulb with the index finger. O Use the rubber bulb to blow any remaining liquid from the pipet. O Use a rubber bulb to twice pull up a volume of liquid past the calibration mark and discard the contents into a waste container. O Touch the tip of the pipet to the side of a beaker and use the index finger to drain the liquid until the meniscus reaches the center of the calibration mark

On a lab quiz, a student listed the steps to properly use a pipet. Which step is incorrect? O Pull up a third volume past the calibration mark and quickly replace the bulb with the index finger. O Use the rubber bulb to blow any remaining liquid from the pipet. O Use a rubber bulb to twice pull up a volume of liquid past the calibration mark and discard the contents into a waste container. O Touch the tip of the pipet to the side of a beaker and use the index finger to drain the liquid until the meniscus reaches the center of the calibration mark

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Answer 1-6
solution. sodium hypochlorite solution? (Round to whole numbers and label your answers)
The market supply of lettuce in a small town is shown in the table below. Supply of Lettuce Price (dollars per Quantity of Lettuce Supplied (heads) head) Initial New $4.00 400 3.50 300 3.00 200 2.50 100 Instructions: Enter your answers as a whole number. a. Suppose an increase in the cost of water decreases production of lettuce heads by 30% at every price. Complete the new supply schedule in the table above. b. At a price of $3.50 per head of lettuce, the original quantity supplied was heads of lettuce and the new quantity supplied is heads of lettuce.
1.The random movement of particles from an area of high to low concentration is known as a effusion. b diffusion.
Use the data table to answer those questions
At 25°C the volume of a gas sample is 380 mL. To what temperature must the gas sample be heated so its final volume becomes 760 mL? Can you type the solution and answer out? Thank you !
So here are a series of experiments:1. A balloon was held against a wall. When it was released, the balloon fell to the floor. 2. A balloon was rubbed with a piece of wool and again held against a wall. This time, whenthe balloon was released it stuck to the wall. 3. A hole was poked in the bottom of a plastic cup. The cup was filled with water, and thewater was allowed to drain out through the hole in the bottom of the cup. While the water wasrunning out the bottom of the cup, a balloon was held near the stream of water. The watercontinued to fall straight down. 4. The previous demonstration was repeated, except this time the balloon was rubbed withwool before it was held near the stream of water. This time, the stream of water was drawntoward the balloon instead of falling straight down. Please explain all of the above. Also please show that you have a really good understanding ofthe laws of electrostatics and the structure of atoms as you do so, and use each of the following terms…
maining nestion Completion Status: QUESTION 13 What is 1.4 L converted to mL? Use appropriate units.
Flocculation is best described as: O A way to kill pathogens in drinking water O A way to remove dissolved chemicals from water O A way to cause suspended particles to clump and sink in water O A way of filtering large particles out of drinking water
1 why does polar liquid solvent cannot dissolve non-polar liquid solute? Select one: a. like dissolve like b. unlike dissolve unlike c. solvent dissolve only solid solute d. unlike dissolve like
Nitric acid is added to a sample of zinc. Based on the following information, what is theconcentration of the acid?Initial mass of zinc 9.50gFinal mass of zinc 3.23gVolume of acid 75.0 mL
this is a question 1. In the eudiometer tube, 26 liters of hydrogen gas and 21 liters of oxygen gas are inserted and then electric sparks are passed through the gas mixture. Determine the volume of gas remaining and what gas is left over? can you do the above problems using the solution as below, please help me I really need, Example A total of 15 L of ammonia gas (NH3) is produced from nitrogen gas and hydrogen gas, determine the volume and gases required at the same volume and pressure. Settlement: Reaction: N2 (g) + 3H2 (g) 2NH3(g) coefficient N Volume N2 x volume NH3 NH coefficient 3 -x 15 L = 7,5 L coefficient N 2 Volume H2 = x volume H2 coefficient H2 = 2x 15 L = 22,5 L So, the volume of nitrogen is 7.5 L and hydrogen is 22.5L