Which laboratory measurement is expressed to the correct number of significant figures? O 9.5011 °C on a mercury thermometer measuring degrees. 60 on a timer with a tenths of second scale. O 0.931 cm on a ruler with a millimeter scale. 40.65 mL in a burette with a milliliter scale.

Q: Convert 3.00 yards to to dm (decimeters) dm How many significant figures should the answer be…

A: 1 yard = 9.144 dm

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: Which of the following include exact numbers?(a) The speed of light in a vacuum is a physical…

A: Solution-  (a) The speed of light in a vacuum is a physical constant is not an exact number. because…

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: The diameter of Jupiter is 142,984 kilometers. The diameter of Mercury is 4,878 kilometers. (a)…

A: Given that,  Diameter of Jupiter = 142984 Km Diameter of Mercury = 4878 Km

Q: Determine the density of a metal weighing 342.0g that displaces 10.5ml of water when placed in a…

A:

Q: The density of gasoline is 0.7025 g/mL at 20°C. What is the mass of 1.000gallon of gasoline. (1 qt =…

A: First calculate the volume of gasoline in mL unit :  Volume = 1.000 gal Volume = ( 1.000gal ) × (…

Q: Q1. The correct conversion expression between degrees °C to K is? A. T(K)=t(°C) + 273.15 C. T(K)=…

A: Temperature T in Kelvin (K) is equal to the temperature T in degrees Celsius (°C)  + 273.15.

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

A:

Q: Osmium (Os) is the densest element known (density = 22.57 g/cm3). Calculate the mass in pounds and…

A: Given:The density of Osmium = 22.57 g/cm3.Diameter = 16 cm; radius = 8cm.Volume of sphere =…

Q: Which of the following include exact numbers? (a) The speed of light in a vacuum is a physical…

A: A measured number contains a limited number of significant digits whereas the exact number 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: A sample of mercury has a mass of 581.0 lb and a volume of 0.686 ft'. What is its specific gravity?…

A: In the given question we have to define the unit of specific gravity, we know that, Density = mass /…

Q: metal strip is 1.11 cm long and 0.33 cm wide. The area in square centimeters to the correct number…

A: We have given that  1. A metal strip is 1.11 cm long and 0.33 cm wide. The area in square…

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

A: given   mass of metal= 32.56 grams volume of water= 14.78ml volume of metal + volume of water=…

Q: The volume of a sphere is 4πr3/3, where r is the radius. One student measured the radius to be 4.34…

A: Given : radius measured by student 1 = 4.34 cm and radius measured by student 2 = 4.37 cm

Q: 14. Calculate the volume occupied by a sample of silver if it has the mass of 5.25 g and its density…

A: Given  Mass of silver sample = 5.25 gram  Density  = 10.5 gram/ cm3 Volume  = ?

Q: A thermometer is taken from an inside room to the outside, where the air temperature is 10° F. After…

A: The answer will be 69.46°F (rounding the answer to two decimal places)

Q: A chemistry student needs 20.0 mL of pentane for an experiment. By consulting the CRC Handbook of…

A: Given data: The volume of pentane = 20.0 mL. The density of pentaane = 0.626 g.cm-3. To calculate:…

Q: A sheet of aluminum (Al) foil has a total area of 1.000 ft^2 and a mass of 3.806g.  What is the…

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Q: The radius of a sphere was measured to be 8.4825 mm. Its volume (V r) to the correct number of…

A:

Q: Carry out the following mathematical operations and answer the questions that follow. 33.916 x 95.7…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: A chemistry student needs 65.0 mL of diethylamine for an experiment. By consulting the CRC Handbook…

A: The relation between mass and volume is given by: Density = mass / volume so, mass = density x…

Q: A slow jogger runs a mile in 13 min. Calculate thespeed in (a) in/s, (b) m/min, (c) km/h (1 mi =…

A: Speed is defined as distance travelled per unit time. Speed = DistanceTime   Now, a jogger runs 1…

Q: The Empire State Building is 443.2 meters. The height of Kilimanjaro is 19,341 meters. (a) Express…

A: Given: The height of the Empire State Building =443.2 m The height of Kilimanjaro =19,341 m These…

Q: (5) One meter contains how many micrometers? A: 1x 109 B: 1 x 10-9 C: 1 x 10-6 D: 1 x 103 E: 1 x 106

A: 1 Meter contains 1 × 106 micrometres.

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

A: Since 2.5 cm has only two significant numbers, the volume is reported in 2 significant figures.…

Q: 14. Which of the following statements use only exact numbers? (a) The temperature in our dorm room…

A:

Q: Two undefined numbers expressed in regular notationare s hown below, along with the number of places…

A: Scientific Notation: In science when the number is too large or too small to perform any…

Q: laboratory experiment requires 13.0g of aluminum wire (d=2.70g/cm cubed). The diameter of the wire…

A: Given,  Mass of aluminum wire= m= 13 g Density of aluminum wire= d= 2.70 g/cm3 Diameter of wire= D=…

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: the density of pure silver is 10.5 g/cm3  at 20 degree. if 5.25 g of pure silver pellets is added to…

A: Density = mass / volume

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

A:

Q: C. 136 Q3. Accuracy refers to how close a measured number is to A. zero C. Other measured numbers…

A: 3. Sol :-  Given statement is :  Accuracy refers to how close a measurement number is to :  A. zero…

Q: Rule: When we multiply or divide numbers, we should round the result to the same number of digits as…

A: Unit conversion is a multi-step process that involves multiplication or division by a numerical…

Q: The diameter of the earth at the equator is 7926.381 mi. (a) Round off the earth's diameter to four…

A:

Q: 1.69 Which of the following include êxact (a) The speed of light in a vacuum is a physical constant;…

A: Exact number : These are the number which have finite integar  value. Significant figure /number are…

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

A:

Q: (a) A bumblebee flies with a ground speed of 15.2 m/s. Calculateits speed in km/hr. (b) The lung…

A: These questions are related to basics of Unit Conversion and some basics involving unitary method…

Q: Q2. The density of a metal is 13.6 x 10 Kg/m³. The density of the metal is- A.13.6 B. 1.36 C. 136…

A: Q2. Density of a metal is 13.6 × 104 Kg/m3 .We have to calculate the density of the metal in g/cm3…

Q: 13. An oven for baking pizza operates at approximately 625 F. What is the equivalent temperature on…

A: The relation between oC, oF and Kelvin scale of temperatures is: 2.

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

A:

Q: Rolls of foil are 304 mm wide and 0.014 mm thick. (The density of foil is 2.7 g/cm3 .)What maximum…

A: The density of a substance is equal to the ratio of its mass and volume. In general, the density of…

Q: A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl…

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.