Round the following to the indicated number of significant figures:(a) 0.424 (to two significant figures)(b) 0.0038661 (to three significant figures)(c) 421.25 (to four significant figures)(d) 28,683.5 (to five significant figures)

Q: If a bullet travels at 689.0 m/s, what is it speed in miles per hour ?

A: Both meter per second and miles per hour are unit of speed.  1 meter per second = 2.24 miles per…

Q: Describe the difference between intensive and extensive properties. Which of the following…

A:

Q: What type of quantity (for example, length, volume, density) do the following units indicate? (a)…

A: Units: A fixed amount used as a standard of measurement. For example, for the measurement of mass,…

Q: The average density of whole milk is 1.034g cm^-3. What is its density in lb gal^-1?

A: Conversion required is,

Q: Express the number 554,780,000,040 in scientific notation to three significant figures.

A:

Q: The tablecloth on my dining room table is 2 m long, which is

A: The length of the table cloth is 2m long which we need to convert into cm and in

Q: A cheetah ran 1000.0 meters in 33.27 seconds, how fast is it running in miles per hour (MPH)? Note:…

A: Given information: 1 miles = 1.609 km              = 1609 m 1 hour = 3600 sec

Q: The average annual rainfall on Mount Waialeale on Kauai, Hawaii is 460.1 inches What is this average…

A: The average annual rainfall on mount waialeale on kauai, Hawaii is 460.1 inches. We know one inch of…

Q: What is the density (in g/mL) of a cube that has equal sides of 12 inches and weighs 491 pounds?

A:

Q: Which answer represents the measurement 0.00569 g rounded to two significant figures?

A: Rules to rounding significant figures :- 1) " If the rightmost digit to be removed is  >5 then…

Q: A newspaper reported that the attendance at Slippery Rock’shome football game was 16,532. (a) How…

A:

Q: A cube of an unknown metal measures 0.375 cm on one side.  The mass of the cube is 0.474 g.  Which…

A: Given : length of metal cube = 0.375 cm  And mass of cube = 0.474 g

Q: 4. The density of aluminum is 2.7 g/cu. cm. What is the weight in pounds of a Solid sphere of…

A: Given that, the density of aluminum is d = 2.7 g/cm3. The radius of the solid sphere of Aluminum is…

Q: If a large marshmallow has a volume of 3.00 in3in3 and density of 0.242 g/cm3g/cm3, how much would…

A: Given :-  density = 0.242 g/cm3  volume = 3.00 in3  To be calculated :-  mass (in grams)

Q: The number 9080000 written in scientific notation to the correct number of significant figures is?

A:

Q: what fraction of an hour is 900 seconds using dimensional analysis

A: what fraction of an hour is 900 seconds using dimensional analysis

Q: What is the mass of a substance that has a densityof 11.6 g/cm3 and a volume of 35 cm?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: A new beeswax candle has a volume of 475 cubic centimeters. Given that the density of beeswax is…

A: Given :- volume of beeswax = 475 cm3              density of beeswax = 0.970 g/cm3  To be calculated…

Q: (a) What is the length of the pencil in the following figure ifthe ruler reads in centimeters? How…

A: Introduction- Significant figures are the digits that have meaning and are non zero integers. To…

Q: What are the standard SI base units of length, mass, time, andtemperature?

A: Standard SI base unit of Length - Meter (m) Standard SI base unit of Mass - Kilogram (kg)

Q: The number 114.4335 rounded to 5 significant figures is

A: All non zero numbers are consider as significant figures.

Q: If the diameter of a cylinder is 5.76 inches and the height is 9.46 inches what is the volume of the…

A:

Q: he following picture is a representation of what type of matter? a mixture of compounds an element O…

A: Note: You have uploaded two different questions at one time. But I am solving only first question…

Q: If a bullet travels at 945.0 m/s , what is its speed in miles per hour?

A: for the conversion of units m/s to mi/hr use the following data 1mile = 1609.344 m 1hr = 60 min = 60…

Q: What is the number of significant figures does the sum of the following contain   .3+ 5.652 , the…

A: 0.3+ 5.652

Q: lo qualify for the 2019 Boston Marathon, a distance of 42.195 km, a runner had to have completed…

A: the average speed=total distance travelledtime taken

Q: Enter your answer in the provided box. In 2015, a Japanese high-speed train set a record—traveling…

A: Given:Speed = 374 mph

Q: Estimate the volume of the object to the correct number of significant figures:

A: In liquids like water, a concave meniscus appears and the lower part of the meniscus is read for…

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: The mass of a sample is 550 kilograms. Expresses that mass in milligrams? Express your answer in…

A: Convert kilograms to milligram

Q: . You are an athlete weighing 78 kg. If you are required to lose 9 kg, what would your final weight…

A:

Q: (a) Read the following description of the element zinc andindicate which are physical properties and…

A: Chemical property- The property in which chemical reactions are happened called as chemical…

Q: In the year 2013, an estimated amount of 36 billion metrictons (1 metric ton = 1000 kg) of carbon…

A: Conversions are, 1 metric ton=1000kg  1 kg = 1000 g 1015 is called prefix Peta.

Q: In the year 2013, an estimated amount of 36 billion metrictons (1 metric ton = 1000 kg) of carbon…

A: solution- 1 metric ton =1000 kg 1 kg = 1000 grams  metric ton conversion into grams ; 1 metric ton…

Q: What is the minimum mass of hubnerite (MnWO), a tungsten ore, from which 85.0 g of pure tungsten…

A:

Q: 7. A submarine cruises through the water at a speed of 26.4 nautical miles per hour. If there are…

A: Question-7 Given data speed of submarine =26.4 nautical mileshr and  1.15 regular miles=1 nautical…

Q: How many significant figures are in the number 8,600,000?

A: Significant figures are meaningful digits which are known with certainty. The number of significant…

Q: Which of the following is a good hypothesis when someone observes that the car won't start in the…

A: Hypothesis  A hypothesis is an assumption, an idea that is proposed for the sake of argument so that…

Q: A very good 197-lb weight lifter lifted 192 kg in a move called the clean and jerk. What was the…

A:

Q: A solid occupies a volume of 0.0103 cm3 and has a mass of 16.8 mg. To the proper number of…

A: The density of a substance is calculated as shown below: Density=massvolume and its unit is g/cm3…

Q: The world record for the hundred meter dash is 9.79s. What is the corresponding average speed in m/s

A: Answer

Q: (a) If an electric car is capable of going 225 km on a singlecharge, how many charges will it need…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as

Q: The density of a metal is calculated as follows. The weight of 57.4 grams is divided by the volume…

A: We have to calculate density considering the Sig figs.

Q: What is the uncertainty in the measured value 12.37040 after it is rounded to the following number…

A: The location of the last significant figure of a measurement shows the uncertainty. When the…

Q: HoLw many From the Sun to reach Earth? (The minutes does it take light distcince From the Sun to…

A: Given,            distance from sun to earth = 93 million miles            speed of light = 3.00 x…

Q: How many days are in 41,700 minutes? (Assume exactly 24 hours in a day). Express your answer with…

A: Since each day has 24 hours  And each hour has 60 mins Hence number of minutes in a day = number of…

Q: Suppose that an in-ground swimming pool has a length and width of 22.0 ft and 39.5 ft, respectively,…

A:

Q: A thief plans to steal a gold sphere with a radius of 28.9 cmfrom a museum. If the gold has a…

A: Given: Radius is 28.9 cm Density is 19.3 g/cm3

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.