2. Calculate the mass of an iron block with a volume of 50.00 cm³. The density of iron = 7.86 g/cm³. Report the answer with three significant figures. I 3. 28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron. Report the density with four significant figures 9 B

An object weighs 9.0330 g.  When the object is put into a graduated cylinder that contains 24.9 mL of water, the water levels rises to 30.2 mL.  Calculate the density of the object. Hint - first figure out the volume, then calculate density. Choose the answer with the appropriate significant figures and units.

Given the following data, calculate the percentage of salt in the original mixture.  Include the % unit and two decimal places in your answer. Mass of mixture = 5.426 g Mass of 400 mL beaker = 137.521 g Mass of 400 mL beaker and sand = 139.477 g Mass of 250 mL beaker = 105.691 g Mass of boiling chips = 0.463 g Mass of 250 mL beaker + boiling chips + salt = 108.328 g

A graduated cylinder which has been filled with 20.00 mL of water. A solid object is added to the graduated cylinder and the water level rises to the 26.40 mL. Calculate the mass (in grams) of the solid object which has a density of 3.26 g/mL.

0.161 STARTING AMOUNT 0.161 km km + 10€ SHSSFE生 0.1 A city block is 0.161 km long. How many cm is this? 0.0161 0.000161 16100 161 0.001 0.00161 km 10 m 0.01 1 cm 1610 10€ 0.161 1000 100 16.1

A lab assistant needs to neutralize a 3.1 M solution of HCI. If there are 350 mL of solution, what volume, in Liters, of a 1.8 M NAOH solution would have to be used? (Hint: You will need to write out the equation and balance it first.) Be sure to report your answer to the correct number of significant figures. Do not report the units (L) in your answer.

The mass of a certain atom is 2.086 x 10°22 g. This is the same mass as 2.086 x 10-16 mg. 2.086 x 10-25 kg. 2.086 x 10-28 Hg. O 2.086 x 10-31 ng.

A student uses a 100.00 mL volumetric flask to determine the density of a sample of water.  The mass of the dry empty flask is determined to be 80.354 g.  The flask is filled to the line 5 times with the water sample and the mass of the flask and the water is determined each time giving the 5 masses below.  measurement 1:  172.275 g measurement 2: 172.288 g measurement 3: 172.28 g measurement 4: 172.263 g measurement 5: 172.378 g Based on the data given above, what is the average density of the sample in g/mL based on those measurements?  Enter your answer with 3 significant figures.

You want to determine the density of a metallic solid object. The object weighs 144.38 grams. You a graduated cylinder where the water level is at 22.0 mL. The water level rises to 29.1l mL when you the cylinder. Calculate the density of the metal cylinder. 6. Mass of object = 7. Volume of object = 8. Density of object =