Three 10 mL samples of gold weighs: 193.119 g, 193.122 g, and 193.161g, respectively. Which sample represents pure gold in terms of (density of pure gold : 19 . 32 g/mL ).

Q: One important observation that supporters of the phlogiston theory had trouble explaining was that…

A: Lavoisier, a French chemist, conducted an experiment in which he decomposed the mercury calx into…

Q: 85.0 g gold object is added to 75.5 mL of water contained in gradulated cylinder ,what is the new…

A: Mass of gold = 85.0 grams Density of gold = 19.3 grams/mL Volume level of water in the cylinder…

Q: State the rules governing the use of significant figures in Adding/subtracting measurements.  How…

A: Significant figures are the digits having a meaning in a given number. The number of decimal places…

Q: A mouthwash contains 23.0 %% alcohol by volume. If the bottle of mouthwash contains 315 mLmL , what…

A:

Q: a. The density of aluminum is 2.70 g/cm and the density of chromium is 7.19 g/cm. If equal masses of…

A: a)As per the given data we have density of aluminium=2.7g/cm3 density of chromium=7.9g/cm3

Q: When a 1.271g Tums tablet reacted with 44.485 mL of hydrochloric acid (density: 1.140 g/mL), carbon…

A:

Q: A sandwich has a mass of 125.45 g and a volume of 49.39 cm^-3. What is the density (in g mL^-1, g…

A: Provided data:- Mass of Sandwich = 125.45 g, Volume of Sandwich = 49.39 cm3 Now, Density =…

Q: 1)2347 mm to miles 2)70 nL in to Gallons 3)21367 dg to Mg? 4)1345 dm in to Km? 5) 780 ounces in to…

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Q: A typical cheese contains 30.17% water, 31.23% protein, 34.39% fat by mass and the rest made up of…

A: A density of any object depend on the mass of the object as well as the volume it occupies. Here we…

Q: 1. Comment on the differences in measurements obtained on the same objects using the meter stick,…

A: A question based on general chemistry that is to be accomplished.

Q: A 25 gram sample of a solid is placed in a graduated cylinder and then the cylinder is filled to the…

A: Mass of the solid = 25 g.Given, Mass of benzene + mass of solid = 58.8 g.So, mass of the benzene =…

Q: The density of isopropyl alcohol is 0.785 g/mL.  A 500.0 g sample would have a volume of

A: Density is defined as the mass of the substance per unit volume - density m-mass of the substance…

Q: You have weighed out 24.5685 g irregular solid chips on an aluminum foil and transferred those chips…

A: Given : mass of solid = 24.5685  initial volume of water in cylinder = 50 mL And final volume of…

Q: Gold is alloyed with other metals to increase its hardness in making jewelery. You have a piece of…

A: Given:Density of pure gold = 19.3 g/cm3Density of pure silver = 10.5 g/cm3Volume of piece of…

Q: An experimentrequires 45.0 g of ethylene glycol, a liquid whose densityis 1.114 g>mL. Rather than…

A: The volume of the solution is found as, 1 mL = 1 cm3

Q: PART 2 Density of Gravel 0010 The mass of the empty weighing boat was measured. Then the weighing…

A: Density of a substance is defined as mass per unit volume. It is denoted as d or ρ. S.I unit of…

Q: Prior to hosting an international soccer match, the local soccer club needs to replace the artifical…

A: Given : The dimensions of field = 0.106 Km by 0.071 Km Cost of turf = $ 9.00 per m2

Q: When converting from kilometers to centimeters how many places does the decimal move to the right?…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: A factory has a solid copper sphere that ne s to be drawn into a wire. The mass of the copper s,…

A: According to the mass conservation law when the copper sphere is converted into copper wire the mass…

Q: A chemist has a block of iron metal (density is 7.87 g/mL). They drop the metal into a graduated…

A: Density of Iron block = 7.87 g/mL Volume changes of water = 2.10 mL

Q: The density of human urine is normally between 1.003 and 1.030 g/mL, and is often used as a…

A: The density of human urine is normally 1.003 to 1.030 g/mL 25 ml of urine has 26.875 g weight

Q: A    bullet    recovered    from    a   crime    scene    has   a   mass    of    9.68    g.    A…

A: .357 Magnum is a low velocity cartridge. The .357 is to some extent reliant on mechanical wounding…

Q: Near room temperature, liquid benzene (C,H) has a density of 0.8765 g cm-3. Suppose that 0.2124 L of…

A:

Q: 9.1. The egg whites from four "large" eggs occupy a volume of 112mL. The mass of the egg whites from…

A:

Q: 4. Classify each substance by composition, first as mixture (MX) or a pure substance (PS): sugar…

A: Sugar = PS , C                  As it is compound made of carbon , hydrogen and oxygen. Granite =…

Q: On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink…

A: Given: Mass of Earth's crust = 2 ton = 2000 Kg.                             (Since 1 ton = 1000 Kg)…

Q: A 75 g sample of sodium chloride (table salt) is to be produced by evaporating to dryness a quantity…

A: NaCl = 3.5 % by mass % by mass = Mass ofsolutemass of sea water solution×1003.5 % = M1 g×100M =…

Q: 25.00 g sample of a solid is placed in a graduated cylinder and then the cylinder is filled to the…

A: Use formula density= mass/volume

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the but…

A: Density can be calculated by using its relation with mass, and volume.

Q: Battery acid has a density of 1.285 g/mL and contains 38.0% sulfuric acid by mass. Determine the…

A:

Q: A student find an irregular metal object. Student wanted to know the identity of this metal. As a…

A: Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals…

Q: Classify each substance by composition, first as mixture (MX) or a pure substance (PS): sugar…

A: We know, Mixture : A mixture is any substance which is made up of two or more different substance ,…

Q: 3) If 8.15 mL of water is placed in a graduated cylinder (mass of empty cylinder = 56.98 g), and the…

A: Answer : Mass of water  = mass of both the cylinder + water -  mass of empty cylinder density  =…

Q: A student places 14.8 mL of water in a graduated cylinder.  The mass of the water and the graduated…

A: As the metal pellets are added into the cylinder the volume of the cylinder changes as the metal…

Q: A graduated cylinder is filled to the 40.00−mL mark with a mineral oil. The masses of the cylinder…

A: Density of oil can be determined from experiment 1 as follows,

Q: 1 You cut a piece of paper into small pieces. Is this o physical or chemical change? Explain your…

A:

Q: In the lab, a student determines the density of a metal object by measuring its mass on a balance…

A: Calculate the volume of the object:

Q: A 25.00-g sample of a solid is placed in a graduated cylinder, and then the cylinder is filled to…

A: First, the mass of benzene is calculated by using the given grams of solid sample and the mass of…

Q: A block of wood weighs 64.02 g and has the following dimensions: length of 15.0 cm, width of 11.0…

A:

Q: The egg whites from four "large" eggs occupy a volume of 112mL. The mass of the egg whites from…

A:

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

A:

Q: the density of lead is 11.34 g/mL and the approximate density of water is 1 g/mL if given 1 kg of…

A: Density is the mass of a substance per unit volume.  Thus, the expression is : D = MV Where - D =…

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: The mass of a 10 mL of graduated cylinder is 11 g. When 9 mL of a liquid A is poured into this…

A: Given data,Mass of cylinder=11gMass of cylinder+mass of liquid=24.5gVolume of liquid=9mL

Q: Prior to hosting an international soccer match, the local soccer club needs to replace the artifical…

A: Given: Length of the field = 0.100 km Width of the field = 0.074 km  Cost of grass turf =$9.00 / m2

Q: 1. Suppose some measurements are made on two different homogeneous stones to find out if they are…

A: Mass and volume are extensive properties which depends upon the amount of the substance and thus,…

Q: Why are units so important in measurement? Giving examples of measurements with no units should…

A: Unit of measurement is used to define the magnitude of a quantity. Example: length in meter, height…

Q: A lead ball is added to a graduated cylinder containing 20.3 mL20.3 mL of water, causing the level…

A: The volume of the ball will be the volume of the water displaced.

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.