Express each answer in scientific notation in the units indicated.a. (1.26 × 1 0 4 kg) + (2.5 × 1 0 6 g) in kgb. (7.06 g) + (1.2 × 1 0 -4 kg) in kgc. (4.39 × 1 0 5 kg) - (2.8 × 1 0 7 g) in kgd. (5.36 × 1 0 -1 kg) - (7.40 × 1 0 -2 kg) in g

Q: How many mL of sodium chloride solution do you need to have 85.4 g? The density of the solution is…

A: As given : Mass = 85.4 g  Density = 1.202 g/ ml  Volume ( in ml) is V  = ?  We know  Density = mass…

Q: A log is either oak or pine. It displaces 2.7 gal of water and weighs 19.8 lb. Is the log oak or…

A: The density for any substance is mass per unit volume. The expression of the density is shown below:

Q: III. Perform these calculations and express the result with the proper number of significant…

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Q: The true mass of a piece of gold jewelry is 1.001 g. An analyst measured the same piece of gold…

A: A data set is said to be accurate if the mean of individual values are close to true value. A data…

Q: Express each result to the proper number of significant figures 5698 x 0.0439 0.005493/(28.000 x…

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

Q: Using a graduated cylinder, you measure out 250 mL ethanol, which has a density of 0.789 g/mL You…

A: Concept based on the calculation of mass of ethanol from its density and volume. Density =…

Q: A piece of metal that is a cube with sides of 1.66 cm has a mass of 69.000 g.  Calculate the density…

A: TO calculate the density of the metal, first of all we determine the volume of the metal cube.

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 sample of metal pellets weighs 13.54 g. When this sample was placed in a 100-mL graduated…

A: Calculate the volume of metalVolume of metal = 27.0 mL – 25.5 mL = 1.5 mL = 1.5 cm3Calculate the…

Q: 1.70 L of a solution that is 14.0 % KBr by mass (the density of the solution is 1.10 g/mL) Enter…

A: Given : Volume of solution = 1.7 L = 1700 mL                                             (since 1 L…

Q: A chemist adds 4 drops of hydrochloric acid to a beaker. What kind of number is "4" in this example?…

A: Here the chemist is adding 4 drops of hydrochloric acid so it not a measured number and the…

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: At 20oC 25.0 ml of concentrated nitric acid solution was found to have a mass of 32.503 g. What is…

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

Q: A certain person had a brain that weighed 1.45 kg and contained 1.45 x 1010 cells. Assuming that…

A: The length of one side of the cell can be calculated from the volume of one cell.

Q: (1) If a 32.0 g sample of the liquid ethylcyclohexane has a volume of 40.6 mL, what is the density…

A: Density is the mass of a material substance per unit volume. Given: Mass of ethyl cyclohexane =…

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: -7 mmol/L mercury(I) chloride (Hg,Cl,) solution to a reaction flask. Calculate the mass in…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A hectacre (1.0000 x 104 m2) is a metric unit of area analogous to an acre. How many square feet are…

A: 1 feet consists of 0.3048 m and 1 square feet consists of 0.093 m2. 1 hectare consists of 10000 m2 5…

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: Experiment 5-Data Anolysis for Accuracy and Precision - A second group of students performed the…

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Q: A waterbed filled with water has the dimensions 8.0 ft x 7.0 ft x 0.75 ft. Taking the density of…

A: Given: The dimensions of the waterbed = 8.0 ft × 7.0 ft × 0.75 ft The density of water = 1.00 g/cm3…

Q: When you see this number: 0.00000123, how do we mathematically and scientifically see this:  a. it…

A: Significant figures refer to the number of digits that are involved in the determination of the…

Q: 1. In mL what is the volume of liquid in the burette pictured on the right (to the correct number of…

A: Three questions based on quantitative analysis, which are to be accomplished.

Q: in the US system, 1 lb is equal to 16oz. is this a measured or exact statement

A: To convert on unit into other we know we have two ways to represent them ; 1)  Exact number :-…

Q: Part 3: Calculate density of a metal an unknown metal. 1. Using the pictures below, record the…

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Q: What is 16.7 cubic feet expressed in cubic centimeters?  ( 1 in = 2.54 cm)     _______[a]_______cm3

A: Inorder to convert cubic feet to cubic centimetres, for an approximate result, multiply the volume…

Q: Express each result to the proper number of significant figures  0.00071+0.002+0.00008 0.9827-0.06…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: A rectangular solid measures 1.0 m by 5.6 cm by 2.1 dm. Express its volume in cubic meters, liters,…

A: The volume of the rectangle can be calculated by the formula,Volume (V) = length (l) × width (b) ×…

Q: How to properly use significant figures in this case? Ccal = (-ΔHrxn x nLR)/ΔT Ccal = (-55.85…

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Q: Dilution A chemist must dilute 75.7 ml of 2.28 mM aqueous copper(II) fluoride (CuF ,2) solution…

A: To solve this problem we will use the equation  M1V1 = M2V2  Here M is the concentration and V is…

Q: 4. The density of mercury is 13.6 g/mL. Express this in kg/L . 5. How many drops of liquid are in a…

A: A question based on dimensional analysis, which is to be accomplished.

Q: When completely filled with water, the beaker and its contents have a total mass of 405.55 g.405.55…

A: In the given question we have to find out the volume of beaker occupied by water then by considering…

Q: The price and density of gold are $57.70 g-1 and 0.698 lb.in-3, respectively. How much would a cube…

A: Given :  Price of gold = $57.70 per gm  Density of gold = 0.698 lb in-3  Length of cube = 1 m = 100…

Q: 1. What is the volume occupied by an aluminum sheet with a mass of 5.28 g? Density of Al = 2.7…

A: Note - Since you have asked multiple question, we will solve the first question for you. If you…

Q: If gasoline costs $3.90 per gallon, what was the fuel cost for this trip?

A: Yes, conceptually your answer and colculations are correct. But here from the economy,final answer…

Q: 3. An Erlenmeyer flask is placed on an analytical balance giving a reading of 124.2218 g. Exactly…

A: Given: Mass of empty flask = 124.2218 g. Volume of water added = 25.00 mL. And mass of flask with…

Q: The density of iron is 7.86g/cm^3. calculate the density in kg/m^3 Note: 1mL=1 cm^3

A: Given: The density of Iron is 7.86 g/cm3. The density of a substance is calculated by the formula,…

Q: 3.-Express each answer in scientific notation and with the proper number of significant figures…

A: The scientific notation means express of a large number or too small number in such a convenient…

Q: 6) 292 cm = ? inches 292m 7) 4.42 inches ? m 442rx 8) 254.3 g = ? kg 9) 1257 km ? cm %3D 1257RmX T60…

A: For each of these conversions, we have to use the respective conversion factor to find the answer.…

Q: You are in a game show and you are asked to pour a gram of sand in the balance, the person closest…

A: Given, the exact value is 1 gram.Individual 1 = 0.894 gIndividual 2 = 765 mg = 0.765 gIndividual 3 =…

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: density of the cube in g/cm^3? Write in decimal form

A: Side length of cube(a) = 13.1 mm = 1.31 cm  So, volume of Cube(V) = a3  V = (1.31)3 = 2.25 cm3 Mass…

Q: aqueous ethanol solution has a density of 0.853 g/mL. What is the percent volume of ethanol in this…

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Q: 1) convert 0.66 ibs to grams. 2)convert 0.00534 in cubed to cubic decimeter. 3) convert 2.7 g/cm^3…

A: 1.Conversion of 0.66lb to grams.

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: 1.The density of manganese is 7.21 g/mL, that of calcium chloride is 2.15 g/mL, and that of sodium…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A certain analytical method for the determination of lead yields masses for lead that are low by 0.5…

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Q: In the determination of the density of a liquid using a pycnometer, water was the reference liquid…

A: 1. Given that : The mass of water = 10.3 g The density of water = 0.9988 g/mL

Q: A cube of plastic 1.3 × 10−5 km on a side has a mass of 2.1 g. What is its density in g/cm3?

A:

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.