(99)A block of wood measuring 2.75 cm × 4.80 cm × 7.50 cm has a mass of 84.0 g. Will the block of wood sink or float in water? (Chapter 3)…
9. A gas sample contains 4.0 g of CH4 and 2.0 g of He. What is the volume of the sample at STP? 17L…
2. What volume of water is needed to dissolve 85.8 g of silver nitrate to make a 2.650 M solution?…
Divide the mass of the solution by its volume -- in this case, 50 milliliters -- to find its density.…
○ Vinegar has a density of 1.05 g/mL. How many grams of vinegar were consumed?…
6 - If the density of a substance is 4.070 g/mL, what is the volume (expressed in scientific notation with appropriate number of significant figures) in milliliters of a piece of this substance with a mass of 7.73 g?…
1.) m = mass of water = density x volume = 1 x 26 = 26 grams…
2) Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g/mL.…
2. If the density of a substance is 0.734 g/cm3 and the volume of the substance is 21.45 cm3, find its mass.…
| How many grams of CaCl2 (molar mass = 111.0 g/mol) are needed to prepare 4.44 L of 0.500 M CaCl2 solution?…
4. A sample of metal has a mass of 34.65 g. When placed in a graduated cylinder containing water, the water level rises 3.3 mL. Which of the following metals is the sample made from? Silver which has a density of 10.5 g/cm3; Tin, which has a density of 7.28 g/cm3; or titanium, which has a density of 4.5 g/cm3.…
|Graduated Cylinder + 50ml water |111.62 |111.62 - 62.33 = 49.29 |49.29 / 50ml = 0.986g/ml |…
What mass of calcium bromide is needed to prepare 150.0 mL of a 3.50 M solution? (Assume that the molecular weight of CaBr2 is 200.618 g/mol)…
44. A student has several different-size samples of substances I and II. She measures the masses and volumes of these samples and plots the graphs shown in Figure D page 67. Which substance has greater density? How do you know?…
1. Suppose you were asked to find the density of a metal object that appears to be a cube. You notice that the metal looks old and has a few chips in it. Without any other information, would it be correct to measure 1 side of the object and cube (^3) the value to determine the volume? Explain.…