If you are walking at a speed of 2.5 miles an hour how fast are you moving in kilometers a min. Given that there are 1609.0 meters in a mile and 60.0 minutes in as hour. report your answer to the correct number of significant digits.

Q: A chemistry student needs 20.0 g of acetone for an experiment. By consulting the CRC Handbook of…

A: Given mass of acetone is 20 g density of acetone is 0.790 g/cm3  volume of acetone is determined as

Q: What type of quantity (for example, length, volume, density) do the following units indicate? (a)…

A: Units: A fixed amount used as a standard of measurement. For example, for the measurement of mass,…

Q: The density of silver is 10.5 g/cm3. What would be the mass in grams of a piece of silver that…

A: Given that  Density of silver (Ag) = 10.5 gm/cm3 volume occupied by silver (Ag) = 23.6 cm3 We know…

Q: length, I = 2.20 in width, w = 2.91 in height, h = 10.4 in +1 in Calculate the height, h, of the…

A:

Q: The velocity of an object is the distance it travels per unit time. Suppose the velocity cm of a…

A: The velocity of the gliding bird=225 cm/s Distance travelled by the bird= 2.7 m First, convert…

Q: If a tiny marble has a radius of 0.25 mm, how many marbles can be lined up across the circumference…

A: Convert the circumference of the earth in millimetres.

Q: Finally, sometimes the desired value does not directly match the units given but is derived from the…

A: Given: The volume of a sheet of metal = 45.5 cm3 Width = 14.8 cm Length = 15.9 cm

Q: Perform the following mathematical operations, and express the result to the correct number of…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: What is the speed of light in miles per second? Express your answer in scientific notation. The…

A: Given: The speed of light in m/s is 299,792,458 m/ s.

Q: A cheetah ran 1000.0 meters in 33.27 seconds, how fast is it running in miles per hour (MPH)? Note:…

A: Given information: 1 miles = 1.609 km              = 1609 m 1 hour = 3600 sec

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

A: Ans

Q: Determining the Number of Significant Figures in a Calculated QuantityThe width, length, and height…

A: Width of the box (b) = 15.5 cm Length of the box (l) = 27.3 cm Height of the box (h) = 5.4 cm Volume…

Q: The numerical value for (5.6 x 104) ÷ (7.89 x 102) is equal to, with the proper number of…

A: Division of significant figures :- The answer of the division should have the same number of…

Q: A chemistry student needs 50.0 g of diethylamine for an experiment. By consulting the CRC Handbook…

A: Given : Mass of diethylamine required = 50.0 g And density of diethylamine = 0.706 g/cm3

Q: A brick of metal has these dimensions: 8.88 in x 7.95 in x 5.41 in. It has mass 17.8 kg. VWhat is…

A:

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: Near room temperature, the density of ethanol can be expressed using the equation d = (-8.99 x 10 g…

A: The density of a compound can be determined by the ratio between the mass of the compound to the…

Q: The diameter of an atom is approximately 1 x 10-10m. What is the diameter in millimeters? (Hint,…

A: Given, the diameter of an atom =1×10-10 mwe are asked to convert this into milimeters.

Q: The diameter of a hydrogen atom is about 1.04 x 10-10 meters. A protein molecule has an overall…

A:

Q: A student uses a stoppered 25.0-mL volumetric flask to determine the density of a liquid. The mass…

A: As our Website policy we can solve only one question per post. Hence, please post question number 4…

Q: A chemistry student needs 40.0mL of pentane for an experiment. By consulting the CRC Handbook of…

A: Given,Density = 0.626 g/cm3,Volume = 40.0 ml.

Q: A sheet of aluminum (Al) foil has a total area of 1.000 ft^2 and a mass of 3.806g.  What is the…

A:

Q: The density of silver is 10.5 g/cm³. What is the mass of a silver bar (in gms) that measures 0.1000…

A:

Q: The density of aluminum is 2.702 g/cm3. If an aluminum cylinder with a mass of 32.154 g is dropped…

A: SOLUTION Given values, Mass of cylinder = 32.154g Initial volume of water  = 15.9 mL Density of…

Q: When the calculation (0.005215)(0.08212)(273.2)/ (4.1) is performed, the answer should be reported…

A: Rules of multiplication and division of Significant figures : In multiplication and division…

Q: There are exactly 60 seconds in a minute, exactly 60 minutes in an hour, exactly 24 hours in a mean…

A: 60 smin ×60 min1 hour ×24 hour1 day ×365,24,daysolar year  =31556736 s/solar year

Q: What type of quantity (for example, length, volume, density)do the following units indicate? (a) mL,…

A: Conversion factors are used to convert different units into each other through dimensional analysis…

Q: Distinguish between the terms accuracy and precision.In general, explain why a precise measurement…

A: To find: Difference between the terms accuracy and precision. Explanation for why a precise…

Q: The weight of a metal sphere was measured to be 9.81 g. Unfortunately, the caliper that was supposed…

A: Given : weight of a metal sphere = 9.81 g  Density = 7.26 g/cm3 To find : Radius of metal surface…

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: GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new…

A:

Q: g. The speed of light is 3.0 X 1010 cm/sec. Express this speed in km/hr?

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: write the equality and conversions factors for the relationship between miles and hours for a car…

A: Dear student, you have not mentioned the units in which conversion from miles/h is required. But…

Q: Iron has a density of 7.87 g/cm^3. If 15.1g of iron is added to 25.9 mL of water in a graduated…

A:

Q: Carry out the following operations and express the answer with the appropriate number of significant…

A: For multiplication and division: Check the LEAST number of significant figures. For addition and…

Q: Convert 15.0 km to feet. (1 km=0.621 miles; 1 miles=5280 fe 24.1 feet 4.92 x 104 feet 4.57 x 103…

A: 1 Km = 0.621 miles1 mile = 5280 ftthen 15 km = ___

Q: When 2.61×103 + 11.7 + 0.22 are added, the answer to the correct number of decimal places is…

A: Addition problemHere we have to add,2.61x10^3 + 11.7 + 0.22Add zeros after number to make it of…

Q: A piece of silver metal weighing 194.3 gramas is placed in a graduated cylinder containing 242.0 mL…

A: Given;

Q: A chemist must dilute 52.5 mL of 323. mM aqueous silver perchlorate (AgCio,) solution until the…

A: Molarity is calculated in terms of moles per litre. It basically tells the amount of moles present…

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3…

A: We know,Mass = Density x Volume

Q: A sample of gold foil is 9.5cm by 12cm. If the mass of the foil is measured to be 10.56g and the…

A:

Q: Sodium Chloride was placed in a beaker and the beaker and the sodium chloride together had a mass…

A: This problem is based on the simple additive properties of mass. Mass of a system is equal to the…

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: What is the area of a piece of metal foil that measures 43.9 cm by 29.21 cm? Express the answer to…

A: Since we know for a rectangular foil area = length × breadth  Here , Length = 43.9 cm…

Q: What is the speed of light in miles per hour? Express your answer in scientific notation. The speed…

A: The speed of light = 299,792,458 m/ s

Q: A chemist adds 750.0 mL of a 207. g/dL silver perchlorate (Agcio,) solution to a flask. Calculate…

A: Given : concentration of AgClO4 = 207 g/dL And volume of solution added = 750 mL

Q: Bronze is an alloy made of copper ( Cu) and tin ( Sn). Calculate the mass of a bronze cylinder of…

A: Given : Radius of cylinder = 6.48 cm  Length of cylinder = 48.81 cm  Composition of bronze :  % of…

Q: A chemistry student needs 35.0 mL of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given, volume of dimethyl sulfoxide = 35.0 mL  1 cm3 = 1 mL  35.0 cm3 = 35.0 mL  Density of dimethyl…

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.