11. A standard gold bar weighs 12.4 kg. The density of gold is 19.3 g/mL. What is the volume of a gold bar? lf an ounce of gold is worth $1255, what is the value of a bar of gold? ( 142 mL $ケ00, 700 , I troy ounce = 31-10% ka

Q: If 10.00 mL (measured using a volumetric pipette) of a solution is pipetted into a 50 mL beaker…

A: Given, Volume of the solution = 10.00 mL Weight of beaker = 43.015 g Weight of beaker+ weight of…

Q: The density of a metal is 8.67 g/cm3. How many pounds are in 298.86 in of the metal? (You can use…

A: The relation between mass, volume and density is : density = mass / volume or, mass = density x…

Q: Q2/ choose (two) only A- We want to mark off a thermometer in both Celsius and Fahrenheit…

A: The question is based on the concept of unit conversion and dimensional analysis. we have to…

Q: graduated cylinder weighs 35.825 g. When 10 mL of water is measured in it, the weight of the…

A: Given: Weight of the graduated cylinder = 35.825 g. The weight of the graduate and water= 45.835 g…

Q: find the volume using the mass and density

A: density = mass ÷ volume  so, volume = mass ÷ density

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

A: Solution: We have three rules for significant figures 1.Non-zero digits are always significant. 2.…

Q: (4.123 × 0.12) + 24.2 why is the answer 25 and not 24.7? The last rule to be used is the addition,…

A:

Q: m= 15.5g, V = 6.01 cm3, what is the density?

A: Density (d) is the measure of mass per unit volume.                        d=mass(m)volume(v)

Q: 4. How many significant figures are present in the measurement 0.053402 mm? How many are in…

A: According to the rule of significant figure- If value is less than 1 then digit count start from…

Q: Indicate the number of significant figures in each number. If thenumber is an exact number, indicate…

A: a) 305,435,087 (2008 U.S. population) - unlimited number of significant figures This is the…

Q: The radius of a dust speck is 4.5 * 10-3 mm. What is the correct value of thisnumber in decimal…

A: Given The radius of a dust speck  = 4.5 x 10-3 mm

Q: You record the following in your lab book: a liquid is thick and has a density of 4.58 g/mL. Which…

A: Given data, A liquid is thick and has a density of 4.58 g/mL. Which data is qualitative and…

Q: A 25 mL water sample is placed in a dish that weighs 500 g, after evaporation and drying at 103…

A:

Q: Part A Express the quantity 689.6 × 10¬12 s in each unit. ms Express your answer using four…

A: Given:   The 689.6×10-12 s in each unit  convert it into ms , ns , ps , fs :

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

A: Here we need the converion factor to convert μg/dl to g/ml

Q: How many significant figures are there in the answer for the following problem? [(143.7 - 121) x…

A: The given calculation is: [(143.7-121)*2.06]0.600 The above calculation has more than one operation…

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

A: Part A :  Mass of a whole cake = 0.870 kg  Mass of one slice = 0.1151 kg  Mass of the remaining cake…

Q: Platinum has a density of 21.45 g/cm³ 25 °C. On the other hand, water at this temperature has a…

A: Given - Density of platinum at 25°C = 21.45 g/cm3            Density of water at 25°C = 0.99997 g/ml…

Q: What is the estimated digit? A measurement done with no tools A digit added by the operator beyond…

A: in a measurement, the last digit is called an estimated digit.

Q: Land in an undeveloped area is being sold for $ 1.28 per square foot (ft2).  How much would 8.52…

A: Given that -  An undeveloped area cost = $ 1.28 /ft2    And given area of land = 8.52 m2    We know…

Q: An intramuscular medication is given at 5.00 mg/kg of body weight. What is the dose for a 190-lb…

A: Given,Intramuscular medication given at 5.00 mg/kg of body weight1 lb = 0.4536 kgSo, 190 lb = 190 x…

Q: Vorksheet 3: Dimensional Analysis Common brass is a copper (Cu) and zinc (Zn) alloy containing 63.0%…

A: In the given question we have to convert the percent Copper (Cu) by mass.  given data:  63.0% copper…

Q: If 20.0 Cal make an ounce, how many ounces of formula should a baby drink per day if the energy need…

A: 1 ounce = 20.0 cal Since per day a baby drink 1.50 ×103 cal No of ounces = 1.50 ×103/20 = 75

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: how many significant figures does 40.005 760  have

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Q: where the numbers 2 and 3 in the last term are exact 1.67 Carry out each calculation, paying special…

A:

Q: (a) The diameter of Earth at the equator is 7926.381 mi.Round this number to three significant…

A: (a) Given, diameter of earth = 7926.381 mi which is approximate equal to 7930 mi. Hence, the…

Q: 4. Convert 0.0102 lb/in³ (pounds per cubic inch) to mg/mL using dimensional analysis.

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: Write 3.280x104 J as a normal, decimal number without any scientifc notation. Pay attetion to…

A: Correct option is C. 0.0003280 J.

Q: Q2/ choose (two) only A- We want to mark off a thermometer in both Celsius and Fahrenheit…

A: 1 pound = 453.592g We know atomic number = number of protons.  The mass number of Br = 79

Q: A small cube measures 12.8 mm on a side and weighs 6.23 grams. What is the density of the cube in…

A:

Q: The density of a certain metal is (6.60x10^0) g/cm3. What is the mass in grams of a sample of this…

A: Given the density of a certain metal = 6.60 × 100 gm/cm3 So D = 6.60 × 1 = 6.60 gm/cm3 Also given…

Q: What is the density of the metal screw which weight 8 grams and has a volume of 4 milliliter ?

A: Given that : Mass (weight) of the metal screw = 8 grams Volume of the metal screw = 4 mL We have to…

Q: The height of horse is usually measured in hands a with a mass of 525 kg. One hand is exactly 1/3…

A:

Q: Perform the following calculation and input the answer expressed to the correct number of…

A: The significant figure rule for the division and multiplication is that the final number should…

Q: (a) How many significant figures should be reported for thevolume of the metal bar shown here? (b)…

A: The volume of the metal bar is calculated as shown below. The volume of the cube is 16.56 cm3 which…

Q: An object weighing 18.00 g is placed in a graduated cylinder containing 14.0 mL of water. The total…

A: Given: Mass of object= 18.00 g Volume of water= 14.0 mL Volume of water and object= 29.0 mL

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

A: Since, we know that ;  1 kg = 103 g  1 m = 102 cm

Q: An individual weighs 81.4 kg and is 1.78 m tall. (a) What is the person's equivalent measurement in…

A: (a) Given that the person's weight is --- 81.4 kg We know, 1 kg = 2.20462 Pound Or, 81.2 kg = (81.2…

Q: What is the density (g/mL) of each of the following samples? Part A A lightweight head on a golf…

A: The density can be defined as the mass of the substance per unit volume of the solution which can be…

Q: 4- Perform the following calculation and report the result to the correct number of significant…

A: The correct option is D i.e 2.8  as we significant upto 2 decimal places then 2.81690 = 2.8

Q: Hi. So I got a test question wrong. The question was: A bottle of cola purchased in Europe gave the…

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Q: A student was performing a density experiment in chemistry lab. He used his 10.0 mL volumetric pipet…

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Q: When you see this number: 4 000 --- or four thousand, how do we mathematically and scientifically…

A: Significant figures or numbers are defined as the number of meaningful digits in a measured…

Q: An athlete with a body mass of 55 kg has 3.0 % body fat. How many pounds of body fat does that…

A: 1 lb = 454 g 1 kg = 1000 g

Q: percentage of matter

A:

Q: 32 Density and Specific Gravity 3) Suppose t Questions: bilo2 boqst would be 1) A block of wood 22.0…

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.