An optician measures the diameter of her patient's pupil. The diameter is 0.0023 m. What is the diameter in millimeters? Write your answer as a decimal.

Q: If I have a measurement of a diameter using a ruler with increments in mm: 1.70cm diameter then…

A: For multiplication and division: The least of significant figures in any number of the question…

Q: what is the density of the salt in g/mL?

A: Density = mass ÷ volume    Rule for significant figure in division:- Round off final answer as per…

Q: 4. The density of a proton is approximately 4.0 x 1014 g/cm°. If the mass of the proton is 1.7 x…

A:

Q: A stone has a mass of 12.3 g is added to a graduated cylinder filled with water to the 38.0 mL mark.…

A: Given -   mass = 12.3 g. volume = 40.3ml - 38.00ml = 2.3 ml density = ?

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Q: A marine biologist measures the volume of a seawater sample. The volume is 251mL. What is the volume…

A: Since we know that  1.0 L  =  1000.0 mL  So to convert the mL into L , we have to divide the given…

Q: What is the density (g/mL) of an object that has a mass of 0.2182 kg , when placed into a graduated…

A: Solution - Density - Density is a measure of mass per volume. The average density of an object…

Q: How many inches are in 382.5 cm? (1 in=2.54cm)

A: Unit conversion from centimeters to inches can be done using the formula given below:

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: A meteor has a volume of 9235 ft3 , what is the mass in kg of the meteor if the density is 0.92…

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Q: What is the density of a metal when 20.9 grams occupies 2.35 mL?

A: Density is given by the ratio of mass of the substance to that of the volume.

Q: The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 nm. What is its radius in…

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Q: You add 6.2 g of iron to 23.00 mL of water and observe that the volume of iron and water together is…

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Q: A bakery measured the mass of a whole cake as 0.870 kg. A customer bought one slice of the cake and…

A: Rule for Significant figures (SF) in mathematical operations:(1) Addition and Substraction round by…

Q: A student measures 49.2 mL of concentrated nitric acid, which has a density of 1.53 g/mL. Part A…

A: Density ( d ) :- Density is defined as the ratio of mass and volume of solution. Density(d) = mass…

Q: An object weighs exactly five grams on an analytical balance that has an accuracy of 0.1 mg. To how…

A: The weight to be measured is 5g Accuracy = 0.1g

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

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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: What is 83.5 centigrams, cg, in ounces, oz? A. 295 oz B. 23.7 oz C. 0.0295 oz D. 2.37 x 105

A:

Q: If a nanometer is one billionth of a meter (0.000 000 001 m), how many nanometers are there in one…

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Q: The density of gold is 19 30 g/cm What is the mass (in grams) of a block of gold with dimensions of…

A: Given datas ;  density of gold  (dAu) = 19.30 g/cm3  dimensions of a block of gold = 0.653 in × 1.02…

Q: 1. Calculate the area of a circle with a radius of 10.0 m. Express your answer in square centimeters…

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Q: An object has a mass of exactly 5 g on an analytical balance that has an accuracy of 0.1 mg. To how…

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Q: A student is determining the density of an unknown metal with a mass of 87.8 g. The student…

A: Given: The mass of an unknown metal, m = 87.8 g The vol. of water in the graduated cylinder without…

Q: If the diameter of a cylinder is 5.76 inches and the height is 9.46 inches what is the volume of the…

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Q: One molecule of the spherically shaped, oxygen-carrying protein in red blood cells, hemoglobin, has…

A: Given: Diameter of the oxygen carrying cells = 5.5nm To Find: Diameter of the cell in meter Formula:…

Q: Is 0.468 meters exact, or measured?

A: Exact numbers those which are obtained after counting and are well defined. These numbers are have…

Q: A 26-meter-tall statue of Buddha in Tibet is covered with 279 kg of gold. If the gold was applied to…

A: given, weight of gold = 279 kg = 279000grams thickness = 0.0015 mm = 0.00015cm density of gold =…

Q: A student estimated that the volume of a crucible was 28.6 mL.  When the volume was accurately…

A: Percent error can be calculated using the following formula.

Q: A block of lead has dimensions of 4.5 cm by 5.2 cm by 6 cm. The block weighs 1587 g. From this…

A:

Q: A rectangular box measures 6.00 inches in length, 7.00 inches in width, and 8.00 inches in height.…

A: Given values and their conversion to centimeter: 1 inch = 2.54 cm Length = 6.00 inches = 6.00 x 2.54…

Q: You are using a Pasteur pipet and want to determine the volume of liquid dispensed in a drop. You…

A: From the given figure we can see that the volume of liquid present in the cylinder is approx 1 mL…

Q: The width, length, and height of a large, custom-made shipping crate are 1.32 m, 2.50 m, and 0.83 m,…

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Q: How many significant figures are there in 0.1010 mm?

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

Q: An astronomer measures the distance from Earth to a newly-discovered asteroid. The distance is 2.38…

A: • The values provided in the question are:-    i) Distance between earth and newly discovered…

Q: If a sample of clay has a density of 1.7 g/cm3 and it takes up a volume of 0.43 cm3, what is its…

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: 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: The density of titanium is 4.5 g/mL , what is the mass in grams of 2.0 mL  titanium?

A:

Q: An optician measures the diameter of her patient's pupil. The diameter is 0.0016m . What is the…

A: Change 0.0016 m to millimeter ?

Q: How many picograms are there in one gram? Enter your answer in scientific notation. For example,…

A: Given Find out 1g =       pg

Q: A piece of metal weighing 305.5 g is placed in a graduated cylinder containing 241.3 mL of water.…

A: Mass of the metal = 305.5 gVolume of the metal = volume of the water displaced = 269.5 mL – 241 mL =…

Q: (2.241 mm )(2.8 mm ) Complete the operation and express the answer with the appropriate number of…

A: The operation expressed and the appropriate number of significant figures:Unit same for both values…

Q: If the density of baking soda is 2.1 g/mL, how many grams of baking soda are present in 5.0 mL (the…

A: the product must contain 2 significant figure as bot of the multiplicand have 2 significant figure

Q: What is the volume of a metal container with 15cm long, 5cm wide and 4cm deep? with a density of…

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Q: what is the mass in miligrams of 567 ml of mercury? The density of mercury is 13.6 g/mL

A: Given: The volume of mercury= 567 mL Density of mercury = 13.6 g/mL Mass of mercury (in mg)=?…

Q: An atom of a particular element has a volume of 7.8 x 10¯31 m3 What is this volume in cubic…

A: The volume of the element is = 7.8×10-31 m3 This volume can be converted into a cubic nanometer by…

Q: A student completed Part C using a small sheet of aluminum metal (d = 2.70 g/cm³). The sheet had a…

A: Given: The density of aluminum sheet: 2.70 g /cm3 Mass of aluminum sheet: 1.4648 g Length of…