A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3 in volume?  The density of gold is 19.3 g/cm3." The student obtains the answer through the following calculation: For the above calculation, how many significant figures should you report the answer to?

Q: A student is determining the density of an unknown metal with a mass of 256.0 g. The student…

A: First, the volume of unknown metal is determined as follows,

Q: When 33.911 is added to 82.649, the result should be reported with digit(s) after the decimal point.…

A: While subtraction or addition, the number of decimal places in the result are same as the…

Q: student gently drops an object weighing 15.8 g into an open vessel that is full of ethanol. A volume…

A: The volume of ethanol displaced from the vessel is equal to the volume of the pject. Let, the volume…

Q: A general chemistry student found a chunk of metal in the basement of a friends house. She measured…

A: Density of a metal is specific and constant. Density = mass/volume  1 mL = 1 cm3 Given that: Mass of…

Q: Calculate the volume of a box, in cubic centimeters, which is 423 cm long, 12 cm wide, and 25 cm…

A: Given that the length of box (L) = 423 cm, width (B) = 12 cm, and height (H) = 25 cm The volume of…

Q: A chemistry student needs 25.0 mL of ethanolamine for an experiment. By consulting the CRC Handbook…

A: The objective of this question is to calculate the mass of ethanolamine that the student should…

Q: A block of iron was measured to be 2.00 cm by 3.15 cm by 5.25 cm. If the density of iron is 7.87…

A: Block of Iron was measured and value is given Density of iron is given How Heavy was the block of…

Q: What is the volume in liters of 5.085 pounds of gold? The density is 19.3 g/cm^3. Express in decimal…

A: Given that, Mass of the gold = 5.085 pounds Density of the gold= 19.3 g/cm3 Since, 1 pound = 454g…

Q: A brick of metal has these dimensions:  7.07 in  x 9.20 in x 7.15 in.  It has mass 8.1 kg.  What is…

A:

Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: Your calculator gives you the number 1761.2868 as the volume (in cm^ 3) of a box 2.0 ft by 6.5 cm by…

A: When rounding off the result of a multiplication, the number of significant figures in the final…

Q: what is the number of significant figures in each of the following measured quantities:(a) 351 g,…

A: The total number of digits in a number including the last digit whose value is uncertain is termed…

Q: A student is determining the density of unknown metal with a mass of 627.0 g. The student partially…

A:

Q: If the radius of the sun is 7.001×105  km, what is the average density of the sun in units of grams…

A: Density can be calculated as: Density=MassVolume

Q: A sample of liquid rocket fuel is stored in a sphere-shaped fuel tank that has an inner diameter of…

A: Solution Light metals have high heat unharness, creating them enticing as fuels or fuel elements. As…

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

Q: V=(4/3)(pi)(r)^3, where r=19.136. What is the answer in correct significant figures?

A: The digits having a meaning in a given number are called as significant figures.

Q: The density of copper is 8.97 g/cm^3. What is the volume, in mL, of a 1.00 kilogram mass of pure…

A: 1.00 kg of copper is equal to 1000.0 g of copper. And 1 mL is equal to 1 cm3.

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

A: 1 acre-foot = 43,560 ft³ 1 US liquid gallon = 231 cubic inches 1 US liquid gallon = 3.785 liters 1…

Q: Calculate the density of the coin from your measurements, and determine how many significant figures…

A: Given :- mass of coin = 84.6419 g               Initial volume of water = 105.53 mL…

Q: the density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm^3.…

A: The density of mercury is given as 13.6 g/cm3 and it is required to convert this in pounds per cubic…

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: A 100.0 mL graduated cylinder was used to measure the volume of water. The initial volume of the…

A: Given:Mass of coin = 96.51 g.Volume of coin = final volume – initial volumeVolume of coin = 56.0 mL…

Q: Perform the following calculations and express the answer with the appropriate number of significant…

A:

Q: A block of wood has the measurements 78 cm X 15.1 cm X 243.1 cm has a mass of 1.716 x 10° grams.…

A:

Q: The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × cm × 1.00 cm block of…

A: given density = 7.87 g/ml cross section = 4.00 cm × 4.00 cm × 1.00 cm

Q: The density of bromine is 3.1g/cm^3. What is the mass of 17.20cm^3 of bromine with the correct…

A:

Q: A student measures a block to weigh 127.95 grams what would this mass be in milograms with the…

A: Given – Mass of block = 127.95 g   To find - convert g to mg

Q: A student is determining the density of an unknown metal with a mass of 232.0 g. The student…

A: Given, the mass of unknown metal = 232.0 g Now calculate the volume of unknown metal is determined…

Q: The beakers shown below have different precision as shown. Suppose you combine the water from these…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: To convert 90 kg.m/s to g.m/s.

Q: A chemistry student needs 30.0 mL of ethanolamine for an experiment. By consulting the CRC Handbook…

A: The objective of this question is to calculate the mass of ethanolamine that the student should…

Q: A rock was found to have a mass of 72.55 grams.  When the rock was placed in a graduated cylinder…

A: The amount of water displaced when the rock was placed in the cylinder will be equal to the volume…

Q: The mass of a piece of metal is 28.3055 grams. When the piece of metal was dropped into a graduated…

A: Given information: Mass of metal piece = 28.3055 g Initial volume = 7.34 cm3 Final volume = 9.84 cm3

Q: If you are walking at a speed of 2.5 miles an hour how fast are you moving in kilometers a min.…

A: The speed in kilometers (km) per minutes, it is to be determined. Given: speed = 2.5 miles/hr 1 mile…

Q: (8.71× 0.0301) 0.056

A:

Q: A chemistry student needs 90.0 mL of carbon tetrachloride for an experiment. By consulting the CRC…

A: Given, Note: 1 mL = 1 cm3 Volume of Carbon tetrachloride = 90.0 mL = 90.0 cm3 Density of Carbon…

Q: How manny cars are there in a long freight train if it takes the entire train 2.00 min to pass a…

A: Given, the long freight train takes time = 2 min Train travels to station per hour = 40 miles per…

Q: Using the listed equalities, convert the following numbers to different units. Make sure that you…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.