A chemistry student needs 35.0 mL of dimethyl sulfoxide for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of dimethyl sulfoxide is 1.10 g•cm -3 Calculate the mass of dimethyl sulfoxide the student should weigh out. Be sure your answer has the correct number of significant digits. ?

Q: A student is determining the density of an unknown metal with a mass of 256.0 g. The student…

A: First, the volume of unknown metal is determined as follows,

Q: A student is determining the density of an unknown metal with a mass of 32.56 g. The student…

A:

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: A chemistry student needs 60.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

A: The density is an intrinsic property that given the mass of an object per unit volume.…

Q: A chemistry student needs 70.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

A:

Q: The density of iron is 7.87 g/mL. What is the mass of a 2.00 cm x 4.00 cm x 1.00 cm block of iron?…

A:

Q: Consider the jar of jelly beans in the photo. To get an estimate of the number of beans in the jar…

A:

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: A data is said to be precise if experimental values are close to each other.  A data is said to be…

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

A: Ans

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 x 1o 4m3 in…

A:

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 17.8 umol of barium…

A: Given that : Micromoles of barium chloride (BaCl2) = 17.8 μmol The volume of solution = 150 mL

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 chemistry student weighs out 0.417 g of citric acid (H,C H¸O,), a triprotic acid, into a 250. mL…

A: Given,  Weigh of citric acid = 0.417 g  Volume of citric acid = 250 mL  Molarity of NaOH = 0.1000 M…

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: A jet airplane reaches 768. km/h on a certain flight. How long does it take to cover 323. m? Set the…

A:

Q: What is the minimum mass of ilmenite  FeTiO3 , a titanium ore, from which  50.0g  of pure titanium…

A: Mass of a substance and the number of moles of a substance are interconvertible, provided the molar…

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…

A:

Q: A chemist must prepare 500. mL of 1.00 M aqueous barium chlorate (Ba(Cl03),) working solution. He'll…

A: From the provided stock solution of 1.22M Barium chlorate solution, 500mL of 1M aqueous barium…

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: 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: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 2.3 x 10 umol of iron(II)…

A: Change micro mol to mili mol the volume in L. then divide it.

Q: A chemist prepares a solution of potassium iodide (KI) by weighing out 37.1 g of potassium iodide…

A: Given: Mass of potassium iodide (KI) = 37.1 g volume of solution = 100 mL The concentration of…

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: A chemistry student weighs out 0.0310 g of phosphoric acid (H, PO,), a triprotic acid, into a 250.…

A: Given values-> Weight of H3PO4 = 0.0310 gm Volume of H3PO4 = 250 ml Molarity of NaOH= 0.1900 M

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: A chemistry student weighs out 0.441 g of citric acid (H,C,H,0,), a triprotic acid, into a 250. mL…

A: Here we first calculate the molarity of the acid then use neutralization rule at equivalence point.

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: What is the volume of a box in cm^3 if its dimensions are 7 inches x 7.7 inches x 10.7 inches? 1…

A: Given dimensions has to be converted from inches to cm.

Q: the volume of the cube in cm^3

A:

Q: A brick of metal has these dimensions: 4.13 in x 5.57 in x 4.01 in. It has mass 11.1 kg. What is the…

A: Metal Brick dimension = 4.13 inx 5.57 in x 4.01 in Mass = 11.1 kg

Q: 1. The student obtains 15 g of an unknown substance. 2. The student notes that at room temperature…

A: Extensive properties are the properties that depends upon the amount of matter in a sample

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

A: Given that , The volume of blood sample ,             = 2uL             =2 x 10-6 L

Q: The density of pure water is 1.00 g/mL. But the density of water from different bodies of water…

A: The ratio of mass of the substance to the volume of the substance is defined as the density of the…

Q: The world record for the hundred meter dash is 9.58 s. What is the corresponding average speed in…

A:

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: According to the rule for significant digits in addition and subtraction, the number of significant…

Q: A student determined in a set of four experiments that the density of magnesium metal was 1.66…

A: The data is given as follows: 1.66 g/mL, 1.65 g/mL, 1.67 g/mL, and 1.67 g/mL Accepted value for…

Q: The density of pure silver is 10.5 g/cm3  at 20 degrees Celsius. If 5.25 g of pure silver pellets is…

A: The volume of silver is calculated from the given density (10.5 g/cm3) and mass (5.25 g) of silver…

Q: 1000 900 800 700 600 500 400 300 200 100 A sample of liquid has a measured volume of 561 mL. 1. How…

A: Given : volume of sample = 561 ml To find : 1). Significant figures 2). Scale divisions in ml 3).…

Q: A recent study found that the median concentration of lead in Canadian tap water is 2.3 x10-8 mol/L.…

A: Given,  The concentration of lead in Canadian tap water =  2.3 x10-8 mol/L. The mass of lead…

Q: A chemistry student needs 55.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given data: The mass of dimethyl sulfoxide = 55.0. g. The density of dimethyl sulfoxide = 1.10…

Q: The density of iron is 7.87 g/mL. What is the mass of a 3.00 cm x 3.00 cm x 2.00 cm block of iron?…

A: The given question is based on the concept of density. Density is defined as the ratio of mass of…

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

A:

Q: A chemistry student weighs out 0.167 g of phosphoric acid (H,PO), a triprotic acid, into a 250. mL…

A: H3PO4  +  3NaOH  ----->  Na3PO4  +  3H2O So, Number of moles of NaOH = 3 x number of moles of…

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: 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: the unit of land measure in the english system is the acre, while that in the metric system is the…

A: We have to calculate the area in hectares.

Q: A scientist performs an experiment to determine the density of a sugar solution.  He obtains the…

A: Accuracy refers to how closely a measured value relates to the true value. Precision refers to how…

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: Length of the box,l  = 2.20 in Width of the box, b= 3.91 in Height of the box , h = 10.4 in + 1 in…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.