Chapter 1, Problem 1.33E

A chemist must dilute 51.9 mL of 65.6 µM aqueous mercury(II) iodide (HgI,) solution until the concentration falls to 21.0 µM. She'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Round your answer to 3 significant digits. MAR W MacBook Air 80 888 DII DD F1 F5 F6 F7 F8 F9 F10 F1 F2 F3 F4

The following question is about signifiant figures.  So I have 17.82 mL of carbon tetrachloride with a density of 1.60 g/mL and want to calculate the mass.  How many signifiant figures should be in my answer?  The density of CCl4 was looked up in the literature and found to be 1.60 g/mL  I thought the answer should be to three signifiant figures (28.5 g) because both numbers going into the calculation were measured numbers.  But I was also told it was 4 (28.51 g) because the 1.60 is the true value of CCl4.  Thank you.

Use the References to access important values if needed for this question. A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, he used the ideas just developed in class about density. First he measured the mass of the metal to be 311.2 grams. Then he dropped the metal into a measuring cup and found that it displaced 15.9 mL of water. Calculate the density of the metal. Density = g/ mL Use the table below to decide the identity of the metal. This metal is most likely Densities of Some Common Substances Substance Density (g/mL) Water 1.00 Aluminum 2.72 Chromium 7.25 Nickel 8.91 Сopper 8.94 Silver 10.50 Lead 11.34

m means meter. TV waves travel at the speed of light (“c”), roughly 3.00 x 108 m/s. How long does it take for a Tv message to reach the edge of our solar system, roughly 9.0×109 miles from Earth? Use proper significant figures. One mile= 1.609 km.

A chemist must dilute 70.4 mL of 9.54 mM aqueous calcium sulfate (CaSO4) solution until the concentration falls to 6.00 mM. She'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Round your answer to 3 significant digits. L

The mass unit associated with density is usually grams. If the volume (in ml or cm3) is multiplied by the density (g/mL or g/cm3) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation. If a large marshmallow has a volume of 2.50 in3 and density of 0.242 g/em3, how much would it weigh in grams? 1 in3=16.39 cm3. Express your answer in grams to three significant figures.

The mass unit associated with density is usually grams. If the volume (in mL or cm³) is multiplied by the density (g/mL or g/cm³) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation. If a large marshmallow has a volume of 2.00 in³ and density of 0.242 g/cm³, how much would it weigh in grams? 1 in3 16.39 cm³. Express your answer in grams to three significant figures. • View Available Hint(s) ΑΣφ ? DA mass of marshmallow =

132. The following statements are all true. (a) Jessica's house is 5 km from the grocery store. (b) Jessica's house is 4.73 km from the grocery store. (c) Jessica's house is 4.73297 km from the grocery store. How can they all be true? What does the number of digits communicate? What sort of device would Jessica need to make the claim in each statement?

A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 10 kg. 20 Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1mole of raindrops? How many moles of raindrops are in the Pacific Ocean?