Choose the answer with the correct number of significant figures.  An unknown sample of       790.0grams has a volume of 900.0mls. (Density = grams/ml)       a. 9                          b. 0.87      c. 0.877                 d.0.8778

Q: Lithium is the least dense metal known (density = 0.53 g/cm3 ). What is the volume occupied by  3.15…

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Q: 1. When expressed as 7.5x10^4, only the significant figures of are to.be considered. (1 point) O 7.5…

A: The notation of digits written in a format is called significant number.Typically after decimal four…

Q: A lab procedure requires 2.35g of ethyl alcahol to be dispensed with a syringe. Show a calculation…

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Q: The mass of unknown metal cylinder A is 8.56 g that occupies 3.2 cm3. a. Calculate the density in…

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

Q: At 25 °C, 10.0181 g of an unknown liquid was found to have a volume of 6.75 mL. 1. Calculate the…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: I’m having trouble with a homework problem.A graduated cylinder contains 155mL of water. A 15.0-g…

A: The problem asks for the final level (volume) of water in the cyllinder after addition of iron and…

Q: Mercury had a density of 13.6g/ml. a. What is the mass of 50.mL? B. What is the volume of 50.0g of…

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Q: Lignum vitae is a hard, durable, and extremely dense wood used to make ship bearings. A sphere of…

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Q: Aluminum has a density of 2.70 g/ml. Calculate the mass (in grams) of aluminum having a volume of…

A: Given :Density of Aluminium = 2.70 g/mLVolume of the given sample of Aluminium = 379 mL

Q: An experiment requires 43.7 g of isopropyl alcohol. Instead of measuring out the sample on a…

A: Density is defined as mass per unit volume. Mathematically, it is expressed by equation (1).

Q: Perform the following conversions (consider significant figures)  a) 2.05 m to mm b) 30.0 cm to m

A: Given   The given quantities are 2.05 m and 30.0 cm.

Q: A solid metal sphere has a volume of 4.2ft^3 the mass of the sphere is 155 lb find the density of…

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Q: A chemist needs 25.0 g of bromine. What volume should she use? (Density of bromine = 3.12 g/cm3.)…

A: Density, volume and mass are related to each other by an equation. The mass of an object is the…

Q: 9) The density of mercury (a liquid) is 13.5 g/mL. What is the volume (in liters) of 692 kg of…

A: Density is defined as the mass per unit volume. It can be expressed as,…

Q: 105. Ethylene glycol (antifreeze) has a density of 1.11 g/cm². (a) What is the mass in grams of 387…

A: Ethylene glycol is ethane-1,2-diol.It has the formula (CH2OH)2. The main use of ethlyene glycol is…

Q: What is the volume of an object of mass 20.00 g and density 2.0 g/mL? 1._______ / 2._______ =…

A: Given the mass of the object, m = 20.00 g  density of the object, d = 2.0 g/mL

Q: A penny has a mass of 2.49 g and a volume 3 of 0.349 cm3. Determine its density in g / cm3.

A: The density of a substance is defined as a mass of a unit volume of the substance. The density of a…

Q: The weight of a rock is measured to be 0.097 lbs. After placing the rock in a graduated cylinder…

A: Weight of rock = 0.097 lbs Volume of water = 19.92 mL Volume with rock = 33.21 mL Density = ?

Q: If 1 pound = 2.205kg, how many grams is in 4.95 pounds? Report your answers to 2 decimal places…

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Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A: Multiplication or division of same units are possible. To do the given operation, first step is to…

Q: (a) How many picometers are there in 1 m? (b) Express6.0 * 103 m using a prefix to replace the power…

A: (a) The conversion of 1m into centimeters (cm) is done as,

Q: In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of…

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

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Q: A metal has a mass of 30.000g when it is placed in a graduate cylinder containing 20.0 mL of water…

A: According to Archimedes principle, the volume of solid submerged in the water is equal to the volume…

Q: An object with a Density of 1.6 g/mL, has a mass if 0.2 LB find the volume in mL

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Q: 1. a) For a particular metal, a student measures the volume to be 15.0 mL and a mass of 22.34 grams.…

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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: Based on the information provided, will the pinewood (density 0.35-0.50 g/mL) float or sink? The…

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Q: Which area is greater than 100 ft?? (yes, that means converting all of them to feet in order to know…

A: Since you have posted multiple question, we are entitled to answer the first only.

Q: 1) The mass of an empty graduated cylinder is 70 grams. When it is filled with 50 ml of liquid it's…

A: Mass of empty cylinder = 70 g  volume of liquid = 50mL  Mass of cylinder + mass of liquid = 120g…

Q: A block of aluminum has a mass of 675.27 g and a volume of 250. mL. Calculate the density of the…

A: A numerical problem based on density determination, which is to be accomplished.

Q: What is the mass of 10.0 ml of diethyl ether?

A: Density = mass/volume  So, Mass = density × volume

Q: 9. A fish company delivers 22 kg of salmon, 05.5 g of crab, and 300.48 mg of oysters to your seafood…

A: Conversion factor used in this question is, 1g=0.001 Kg 1 mg=0.000001 Kg 1 pounds=0.454 Kg

Q: 1) A sample of metal has a mass of 95.3 g and a volume of 21.6 mL. What is the density of metal X?…

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Q: Acetone (nail polish remover) has a density of 0.7857 g/cm3.a. What is the mass in g of 28.56 mL of…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: The density of solid gallium is 5.91 g/mL at room temperature. a. Calculate the mass (in pounds) of…

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Q: Lead has a density of 11.3 g/cm3. What is the volume of a 15.1 g block of lead?

A: Given: Density= 11.3 g/cm3 Mass of lead= 15.1g To find: The volume of lead

Q: A 1995 penny having a mass of 2.931 g is cut to expose the zinc and dropped into sulfuric acid.…

A: The mass of the given penny is = 2.931 g The mass of the copper shell is = 0.059 g The mass of zinc…

Q: 1.) Why is there a need to convert one unit of measurement to another?

A: "Since you have asked multiple questions, we will solve the first question for you (as per our…

Q: A 50 ml beaker has a mass of 42.503g. Make the following conversions mass in kg , lbs, tons, dg

A: Given: mass of the beaker = 42.503 g To Make the following conversions a) Mass in g into mass in kg…

Q: An object has a mass of 157.7 g and a density of 11.5 g/cm. Determine the volume of the object in…

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Q: A marine biologist measures the volume of a seawater sample. The volume is 1211 mL. What is the…

A: We know, 1 Liter(L) = 1000 milliliters(mL)

Q: A 10 mL graduated cylinder has a height of 7.12 inches.  Make the following conversions  height in…

A: It is given that the height of a 10 mL cylinder is 7.12 inches. The height can be converted to cm by…

Q: Part A A bedroom has a volume of 112 m³ What is its volume in cubic kilometers (km)? ? V = km3 Part…

A: 1 m = 0.001 km 1 m = 10 dm 1 m = 100 cm

Q: A sample of an unknown metal has a mass of 35.4 g and a volume of 3.11 cm3. Calculate it's density

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Q: 2. Complete the blanks in each row, as in the first: a) Find and underscore the last significant…

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Q: If a substance has a mass of 64.9 g per 888 mL then its density is _____ g/mL.  to the 3 sig figs

A: Given: Mass of substance = 64.9 g Volume of substance = 888 mL Density of substance =?

Q: The density of a liquid is 7.4 g/mL qnd has a mass of 22.58 g. What is the volume in mL

A: Given,  Density of the liquid = 7.4 g/mL  Mass of the liquid = 22.58 g  What is the volume of the…

Q: An empty beaker has a measured mass of 29.456 g. When some salt is added to the beaker, the combined…

A: Mass of empty beaker = 29.456 g  Combined mass when salt is added to beaker = 36.176 g  Mass of salt…

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.