A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. (52. cm) · [I] = ? km

Q: Use decimal notation to express 4.22 mg in grams?

A: When we convert grams to milligrams, the conversion factor is

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: The density of ethylene glycol, the principal ingredient in antifreeze is 1.11 g/cm3.  If you have…

A: For Ehtylene Glycol liquid,  Density = 1.11 g cm-3 Mass = 245 g Volume = ?

Q: When rounding the number 2.348615 to 4 significant figures, what is the correct value?

A:

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

A: we need to convert from N/cm to N/mm

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: Prepare a table in which the rows are: length, area, volume, mass, and time. Make two columns, one…

A:

Q: The diameter of a copper (Cu) atom is roughly 1.3 x 10-10 m. How many times can you divide evenly a…

A: Given :- Length of copper wire = 10 cm Diameter of wire = 1.3 × 10-10 m

Q: Convert 6.4 x 10^-28 j-s/ kg to erg- min /lb. Note that “j” means “ joule” - it is one of the units…

A: 6.4*10-28 j-s/Kg to erg-min/lb Conversion required : 1 J = 107 ergs 60 sec = 1 min => 1 sec =…

Q: When 87.7 is added to 73.841, the result should be reported with significant figures. And when 87.7…

A: 87.7+ 73.841= 161.5 87.7÷73.841 = 1.19

Q: Calculate (2.075 x 0.585)/(8.42 x 0.0045) Correct the answer by rounding off the number to the…

A: Significant Numbers are those numbers or digits in the given number which are used in mathematical…

Q: The following procedure was used to determine thevolume of a flask. The flask was weighed dry and…

A: Density of the flask is equal to the mass of substance divided by its volume. Write the expression…

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

A:

Q: 2. The volume of a block-shaped object can be calculated using the formula: volume = length X width…

A:

Q: The measurement 4.3 x 103 g also could be written as

A: unit conversion is one of the basic measurement gram and kilogram are the units of mass 103 gram = 1…

Q: Which answer represents the measurement 0.00569 g rounded to two significant figures?

A: Rules to rounding significant figures :- 1) " If the rightmost digit to be removed is  >5 then…

Q: Which of the following are exact numbers? a. There are 100 cm in 1 m. b. One meter equals 1.094…

A: a is the exact numbers  b is not exact it is approximate value

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

A:

Q: A student sets up the following equation to convert a measurement.

A: Unit converstions :  1. mole unit conversion:    1 mol = 103 mmol        where mmol stands for…

Q: The prefix “micro-“ means 1 x 10^-6. Convert 752 micrometers to meters.

A:

Q: The radius of a copper (Cu) atom is roughly 1.3x10−10 m. How many times can you divide evenly a…

A: The length of the two pieces of copper wire obtained after the final cut (which contain one copper…

Q: When multiplying or dividing measured quantities, what determines the number of significant figures…

A: The significant figures of a number written in positional notation are digits that carry meaningful…

Q: The surface area of the earth is approximately (1.92x10^8) square miles. What is this area in square…

A: we know that,  1 square mile = 2.59  square km

Q: mi/hr

A:

Q: convert 3.73 x 10-3m to the equivalent length in nanometers

A: Given,3.73*10-3m  One metre is equal to 109nm.

Q: How long a trip, in kilometers, can be made on one full tank of gasoline? Express your answer to two…

A: Two numerical problems based on unit conversion, which are to be accomplished.

Q: A jet airplane reaches 887. km/h on a certain flight. How long does it take to cover 454. m? Set the…

A:

Q: In the former British monetary system, one pound consisted of four crowns, each crown was worth five…

A: One unit is converted into other by multiplicative factor .

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

A:

Q: Keeping track of units during conversions can get confusing. Therefore, a good strategy is to use…

A: We will use conversion factor to convert each term in question.

Q: How do I know the number of significant figures if the decimal notation is 8,725 km and the scientic…

A:

Q: The mass of fuel in a jet must be calculated before each flight to ensure that the jet is not too…

A: It is given that;Volume of A 747 jet fuel = 173,231 L      Density of the jet fuel = 0.768 g/cm3 It…

Q: Consider the following conversion factors: (i) 1000 m = 1 km, (ii) 1 mL = 1 cm3,(iii) 1 lb = 453.59…

A: 1 km = 1000 m The number of significant figures in 1 of 1 km is 1 and the number of significant…

Q: The world record for the hundred meter dash is 9.58 s. What is the corresponding average speed in…

A:

Q: if a plot of weight in g vs volume in ml for a metal gave the equation y=13.41x and R^2= 0.9981 what…

A: Density, mass and volume of a metal are related as:

Q: When expressed using an appropriate prefix, the quantity 3.77 × 10–2 L should be written as (write…

A:

Q: A block metal has a volume of 13.4in^3 and weighs 5.22lb. What is its density in grams per cubic…

A:

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

A:

Q: The width, length, and height of a small box are 15.5, 27.3, and 5.4 cm, respectively. Calculate the…

A: Given information: Length = 27.3 cm Breadth = 15.5 cm Height = 5.4 cm

Q: How many significant figures should be retained in the result of the following calculation? 12.00000…

A: The given expression has been simplified below.

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

A: Unit conversions involve conversion of a unit of a physical quantity into another unit of same…

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

A:

Q: A sample of iron bar has a density of 7.87g/in^3. If the bar measures out to be 17.1mm x 6.6mm x…

A: Density of the iron bar = 7.87 g/ in^3.Volume of the iron bar = 17.1 mm x 6.6 mm x 5.3 mm = 598.158…

Q: When subtracting 61.45 g from 242.6 g, which value determines the number of significant figures in…

A: Significant figures are the value of a number of digits that add accuracy to the value. There are…

Q: Because of the high heat and low humidity in the summer in Death Valley, California, a visitor…

A: Given that, 1 quart = 0.946 L 1 mi = 1.61 km 1 g water = 1 mL water

Q: Which of the following is a physical property?     Which of the following items is a pure…

A: Interpretation-  There are too many questions which are given as above mentioned so just answer of…

Q: Suppose that an in-ground swimming pool has a length and width of 22.0 ft and 39.5 ft, respectively,…

A:

Q: Calculate the following and express the answers with the correct number of significant figures. 1)…

A: Significant figures refer to the number of digits that are involved in the determination of the…

Q: The radius of a copper (Cu) atom is roughly 1.3 ×10−10 m. How many times can you divide evenly a…

A: The length of the two pieces of copper wire obtained after the final cut (which contain one copper…

Q: Is it possible for a calculated answer from an addition or subtraction problem to contain more…

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.