Women runners must run a marathon race (26.2 miles) in less than 3 hours and 40 minutes to qualify for the Boston Marathon. To qualify, what must a woman’s average speed be in meters per second?

Q: The distance between two atoms in a molecule is 148 pm. What is this distance in centimeters?

A: we know, 1 picometer(pm) = 10-12 meter(m) distance ( in m) = 148 pm  × 10-12 m / 1 pm = 148  × 10-12…

Q: Convert 2.05×10−3 m2.05×10−3 m to the equivalent length in nanometers.

A: The solution is given below -

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: Given : Mass of water in swimming pool = 8.45 X 104 gallons  Mass percent of chlorine = 6.00 %  And…

Q: A chemistry student needs 40.0 g of carbon tetrachloride for an experiment. By consulting the CRC…

A: The objective of this question is to calculate the volume of carbon tetrachloride that the student…

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

A: Ans

Q: You drive in canada where the distance were marked in kilometers. The sign says you are 80km from…

A: The distance of Ottawa from the sign board is 80 km. You are travelling with a speed of 75 mi/hr. We…

Q: Convert 9.37×10−3 m9.37×10−3 m to the equivalent length in nanometers.

A:

Q: A piece of cardboard is 12.0 cm long and 6.3 cm wide. What is the area of this piece of cardboard in…

A: Given,A piece of cardboard is 12.0 cm long and 6.3 cm wide.

Q: The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 nm. What is its radius in…

A:

Q: 53. To qualify to run in the 2015 Boston Marathon, a distance of 26.2 miles, an 18-year-old woman…

A:

Q: The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At…

A: For swimming 1500 m , Time required = 14 min 34.56 sec   We have to find the time required to swim…

Q: What is the volume in liters of 5.085 pounds of gold? The density of gold is 1.93 g/cm^3. Express in…

A:

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The values are given as follows:

Q: convert 3.73 x 10-3m to the equivalent length in nanometers

A: Given,3.73*10-3m  One metre is equal to 109nm.

Q: Convert 2.11×10−3 m2.11×10−3 m to the equivalent length in nanometers.

A: In the given question , we need to convert the unit of length given in meter (m) to nanometers (nm).…

Q: A sprinter set a high school record in track and field, running 200.0 m in 21.3 s. What is the…

A: We have to calculate the speed in km/hr .

Q: The average speed of the International Space Station as it orbits the earth is 7710 m/s.  What is…

A: Distance can be measured in different units such as meters , centimeters , kilometers , miles  Some…

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: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The mass of water in the pool is calculated as,

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3…

A: We know,Mass = Density x Volume

Q: A world record for the men's marathon was set by Dennis Kimetto of Kenya on September 28, 2014. He…

A: Time taken = 2 hours 2 minutes and 57 seconds  Distance covered = 26.219 miles

Q: The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At…

A: Distance = 1500m Time = 14min 34.56s  1 min = 60s  14min×60s/1min = 840s  Time in seconds =…

Q: after you have worked out at the gym on a stationary bike for 49.0 minutes, the distance guage…

A: Given data:

Q: The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s.…

A: Given: For swimming, 1500.0 m is crossed in 14 min 34.56 s. The time taken to swim 0.600 miles at…

Q: Convert 7.57×10−3 m7.57×10−3 m to the equivalent length in nanometers

A: Given,7.57×10−3

Q: A piece of cardboard is 12.0 cm long, 6.3 cm wide and 0.75 millimeters thick. What is the volume of…

A:

Q: How to convert 3.09×10−3 m3.09×10−3 m to the equivalent length in nanometers?

A: Length is measure in diffrent units  Some Basic s units are followings  1) Meter=It  is fundamental…

Q: A sample of mercury is found to have a mass of 524.5 g and to have a volume of 38.72 cm3. What is…

A:

Q: You want to produce a 50 g sample of glucose by evaporating to dryness a quantity of glucose…

A: Mass of glucose to be produced = 50 g Concentration of the glucose solution= 8 % by mass The density…

Q: A chemistry student needs 35.0 mL of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given, volume of dimethyl sulfoxide = 35.0 mL  1 cm3 = 1 mL  35.0 cm3 = 35.0 mL  Density of dimethyl…

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.