During this week's experiment, a student was provided with a stock solution of fd& c red 40 dye that was 0.378 mm. following the procedure in the lab manual, she created solution #2 by pipetting 5 ml of solution #1 to a 25 ml volumetric flask, then diluted to the calibration line with di water. what is the concentration of solution #2 in mm? your answer should be between ~.001 and .05after creating her standard curve for absorption versus the concentration (m) of fd& c red 40, a student found that her best fit linear line for fd& c red 40 was y = 2607x + -0.006.her kool-aid sample had an absorbance of 0.291. if 0.46 grams of kool-aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of fd& c red 40 in her 8-fl oz cup? your answer should be between ~.9% and 11%

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases.as altitude increases, air density increases.air pressure and density are lowest at sea level.denser air exerts more pressure than less dense air.

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0