STARTING AMOUNT + X The state of Oregon has an entire area of 9.70 × 104 mi² . What is this area in square kilometers ? ADD FACTOR x( ) (1.609)² 9.70 x 104 0.6214 mi² 6.03 × 104 1.56 × 105 km² km (1)² 1 m² ANSWER 1.609 (0.6214)² 2.51 x 105 5280 mi m RESET 5 3.75 x 104

Q: A sample is found to contain 8.47×10-6 g of salt. Express this quantity in nanograms.

A: Given that Mass of sample (salt) = 8.47 × 10-6 g Mass of sample  = ? ng

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

A:

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: The density of a proton is approximately 4.0 x 1014 g/cm³. If the mass of the proton is 1.7 x 10.24…

A: The objective of this question is to calculate the volume of a proton given its mass and density,…

Q: A sample is found to contain 9.75×109 g of salt. Express this quantity in milligrams.

A:

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass…

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Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: What are 2 cups of chocolate chips converted into nanograms? 1 cup of chocolate chips = 170 g 1…

A:

Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: Drag the answers that have been correctly rounded to the appropriate number of significant figures…

A:

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

A: 1 acre-foot = 43,560 ft³ 1 US liquid gallon = 231 cubic inches 1 US liquid gallon = 3.785 liters 1…

Q: What is the circumference in kilometers (km)? in meters (m) (1 mi = 1.6093 km)

A:

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: What is the area in cm² of a sheet of paper that is 8.50 in x 11.0 in?

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Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only 44.5 g/km, Suppose a…

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Q: The mass of a uranium atom is 3.9526 × 10-22 grams. What is this value in nanograms? In your…

A: The mass of uranium atom = 3.9526×10–22 grams

Q: The metric system uses prefixes to represent larger or smaller amounts based on the number ten. What…

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Q: Perform the calculations below and give the results with correct significant figures. 27.8 g +…

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Q: Convert the following 3.0 x 10^-12 g/cm^3 = ng/m^3

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

Q: 8) To determine the volume of an irregular shaped object, it is dropped into a graduate cylinder…

A: The objective of the question is to calculate the density of an irregular shaped object using the…

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: You can identify a metal using its density. If you have a metal brick that you measured to be 4…

A:

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

A:

Q: If the price of gold is $1,318.61 per troy ounce (1 troy ounce is exactly 31.1035 grams), what is…

A: Given   The price of gold is $1,318.61 per troy ounce. The second given price is $1,000,000. The…

Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only 44.5 g/km. Suppose a…

A: Diameter of the wire = 0.080 mm Weight of wire per km = 44.5g   Weight of wire used to wind a magnet…

Q: Measurement and Matter Adding or subtracting and multiplying or dividing measurements 0/3 B A…

A: Information about the question

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

A: Convert mol/kg into mol/gram.

Q: The concentration of carbon monoxide (CO), a common air pollutant, is found in a room to be 5.7 x…

A: The volume of the room is calculated as following,

Q: The standard definition of a quart is equal to 947 mL. Calculate the percent error of a student's…

A: Given  Actual value of quart=947 mL The measured value of quart=938 mL Percent error has to be…

Q: (8.71× 0.0301) 0.056

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Q: Question 1: Determine whether the answer to each calculation has the correct number of significant…

A: (1)

Q: A group of students took turns using a laboratory balanceto weigh the water contained in a beaker.…

A: A group of students took turns using a laboratory balance to weigh the water contained in a beaker.…

Q: A jet airplane reaches 682. km/h on a certain flight. How long does it take to cover 342. m? Set the…

A: Given Speed (v) = 682 km/h Distance to be travelled (D) = 342 m = 342 × 10-3 km  Time taken (t)t = D…

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.