Prelaboratory Assignment experiment 1 PDF

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Prelaboratory Assignment 1. The most common fuel and required air component for the ignition of an efficient Bunsen flame are natural gases, which is a mixture of gaseous hydrocarbons, but primarily hydrocarbon methane, CH4 is used. 2. Question a.

the color of a nonluminous flame from a Bunsen Burner is blue because a sufficient amount of oxygen is present.

b. The temperature of a luminous flame would be less than a nonluminous one because it does not receive enough oxygen while burning, causing incomplete combustion. 3. You read the meniscus at eye level and where the lowest part of the water is. 4. The sensitivity of the least sensitive balance would most likely be + or - 0.01g. 5. A woodfire in a fireplace has an insufficient amount of oxygen being supplied which makes it a luminous flame, while a stove fire is being supplied with a sufficient amount of oxygen so it may burn with a nonluminous flame. 6. Refer to 16b a. Remove the drop suspended from a pipet tip by touching the tip to the side of the waste beaker. b. The finger used to control the delivery of liquid from a pipet is the index finger. c. The last remaining liquid in a pipet after delivery should be disposed of in the waste container. d. TD means tube delivery, which means that the pipet is calibrated for the specified volume.

7. D = M/V Platinum = 21.43/10 = 2.143 Diamond = 3.51/10 = .351 Diamond has the most value because it has a lower density than Platinum 8. D = M/V 11.229 - 5.333 = 5.896g V = 5.0 mL Mass = 5.896g D = 5.896g/5.0mL = 1.18g/mL...