How many acres are in nine hectares? Express your answer using four significant figures. One hectare is defined as 1.00 × 104 m2.   One acre is 4.356 × 104 ft2, and 1 m = 3.281 ft.

Q: A chemistry student weighs out 0.0977 g of acetic acid (HCH,CO,) into a 250. mL volumetric flask and…

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Q: How many significant figures are in each of these measurements? 93 g, 420210 kg,

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Q: Which quantity would have unlimited significant figures? 12 square feet 12 miles/hour 12 kg 12 eggs…

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Q: A certain solid has a density of 8.0 g/cm3. If 16.0 g of this solid are poured into 4.00 mL of…

A: Given: Volume of water = 4.00 mL mass of solid, m = 16.0 g density of solid, d= 8.0 g/cm3

Q: The density of aluminum is 2.70 g/cm3. A square piece of aluminum foil 22.86 cm on one side weighs…

A: Here we are required to find the thickness of aluminum foil.

Q: How many significant figures should the answer for the following calculation have? (433.621 - 333.9)…

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Q: Convert the following measurement. =0.00397 (kg)/(mol x dL) = ? (g)/(mol x L)   I dont know what…

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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…

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Q: Which of the items below would be considered the least dense?     a tire with a volume of 2.12 L…

A: Given : we have to search which of the following is least dense.

Q: if the total volume in a graduated cylinder is 3.11 mL & the total number of drops placed in the…

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Q: A chemistry student weighs out 0.0353 g of acetic acid (HCH,CO,) into a 250. mL volumetric flask and…

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Q: A chemist needs 2.00grams of a liquid compound with a density of 0.718 g/cm^3. What volume of the…

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Q: A chemistry student weighs out 0.120 g of lactic acid (HCH,O,) into a 250. mL volumetric flask and…

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Q: A surveyor measures the length of a surveying chain containing 1000 chain links. The length is…

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Q: A chemistry student weighs out 0.166 g of chloroacetic acid (HCH, CICO,) into a 250. mL volumetric…

A: Chloric acetic acid reacts with sodium hydroxide to form sodium chloroacetate and water. The…

Q: What is the value in Japanese Yen of a solid sphere of silver with a diameter of 3.00 inches? Silver…

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Q: How many cubic centimeters are there in 8.14 yd^3 Express the volume in cubic centimeters to three…

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Q: How many grams of water are in a glass that contains 9.90 fluid-ounces? (The density of water is…

A: Density is given as , D=mVD=densitym=mass V= Volume⇒m=D×V Volume of water=9.90 fluid ounce Density…

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

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Q: O MEASUREMENT AND MATTER Setting up the math for a one-step quantitative problem Suppose you need…

A: The mass of 70 tow chain = 2.16 kg/m

Q: How many significant figures does 40100 mi has? How many significiant figures does 11 degrees…

A: Calculate number of significant digit in the given data---

Q: A flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

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Q: Write the number of significant figures in the number on the line.           0.0240 ________…

A: We follow the below-assigned rules to find the number of significant figures in any measurement.

Q: the old pharmaceutical system of measurements, masses were expressed in grains. There are 5.760 x103…

A: Given:  Mass of 5.760 x 103 grains = 1 lb  1 lb = 453.592 gm  Number of grains in aspirin = 5

Q: What answer should be reported, with the correct number of significant figures, for the following…

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Q: 1. Convert the number 3,200,000 into scientific notation with the same significant figures? 2.…

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Q: flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A: The mass of flask of mercury  = 76pounds  1 Pounds = 453.92grams

Q: A hardware salesman measures the mass of a box containing 1000 washers. The mass is 1.5924 kg. What…

A: We know that - 1 Kg = 1000 g 1 g   = 1000 mg

Q: A chemist must prepare 750. mL of 240. mM aqueous sodium carbonate (Na₂CO3) working solution. He'll…

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Q: If an object as a density of 4.00 g/cm^3, what is its density in units of kg/m^3?

A: Given : density = 4.00 g/cm3

Q: Acetone is a common solvent that has a density of 0.7899 g/mL.0.7899 g/mL. What volume of acetone,…

A: Density = Mass/ volume  Density of Acetone is 0.7899 g/ml  0.7899 g of acetone has volume 1 ml  lets…

Q: If the density of gas is 0.702 g/mL, what is the mass in grams of 5.0 x 101 mL of gasoline?

A: Given, If the density of gas is 0.702 g/mL,  The mass in grams of 5.0 x 101 mL of gasoline is :

Q: You weigh a crucible empty to be 44.181 g. You add Mg and weigh the crucible and Mg together to be…

A: Given : Mass of crucible = 44.181 g And mass of crucible with Mg = 44.421 g

Q: The output of a plant is 4335 pounds of ball bearings per work-week (a work week = five days). If…

A: Given: Mass of each ball bearing = 0.0113 g Total mass of ball bearings formed in 5 days = 4335…

Q: A chemistry student weighs out 0.228 g of phosphoric acid (H,PO, a triprotic acid, into a 250. mL…

A: This is an acid base titration where H3PO­4 is a triprotic acid and the reaction taking place will…

Q: A runner wants to run 11.9 kmkm. Her running pace is 7.0 mi/hrmi/hr. How many minutes must she run?…

A: Concept introduction: Speed of an object is equal to the distance covered by object per unit time.…

Q: For a pharmacist dispensing pills or capsules, it is often easier to weigh the medication to be…

A: Given:A single antibiotic capsule weighs 0.50 g and a pharmacist weighs out 12.5 g of capsules for…

Q: How many significant figures are in each of these measurements? 71. 93 g, 0.420210 kg

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

Q: Which of the following has the same number of significant figures as the number 1.00310? Group of…

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Q: This question is designed to ensure that you are using your calculator correctly. Use a calculator…

A: Significant Figures - It basically tells us how many digits are reliable and absolutely necessary in…

Q: A chemistry student weighs out 0.181 g of phosphoric acid (H,PO), a triprotic acid, into a 250. mL…

A: First of all,we calculate the Molarity of phosphoric acid. Molarity is the number of moles of solute…

Q: What is the answer for the following calculation: (1.249 - 0.0234) × 139.37 ? A) 170.812 B) 170.8 C)…

A: Answer :-  (1) C) 170.81  (1.249 - 0.0234) × 139.37 = 170.81…

Q: The density of mineral oil is 0.834 g/mL. What is the mass in kg of the mineral oil in a cubic…

A: Given that: density of oil = 0.834 g/mL side of a cube = 11 inches. To find: The mass in Kg of…

Q: A pharmacist measures the mass of a powdered drug. The mass is  681mg. What is the mass in grams?…

A: We have given that  The mass  of a powdered drug  = 681mg.  mass  of a powdered drug in grams = ?

Q: 1.-How many significant figures are in the following numbers? 0.70620 a. b. 5010 4548 C. d.…

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

Q: What is the mass, in grams, of 28.74 mLmL of acetone? Express your answer using four significant…

A: Here, we have to find the mass of acetone (in grams) of 28.74 mL of acetone.

Q: Azelastine hydrochloride is an antihistamine nasal spray. A standard-size container holds one fluid…

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Q: A room has the following measurements:  15.0 ft length, 10.0 ft width, and 5.0 ft height. What is…

A: Given  Length  = 15 ft  Width   = 10.0 ft  Height  = 5.0 ft  Volume = ? 1 ft = 0.305 meter

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: When you perform the following operations, how many significant figures should your answer have?…

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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.