The density of helium at standard temperature and pressure is 0.166 g/L. What volume in liters would  3100 mg of helium gas occupy? Express your answer with an appropriate number of significant figures.

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

A: The solution is given below -

Q: A cyclist travels at a rate of (2.30x10^1) miles per hour. At this speed, how many minutes would it…

A: Speed of cyclist = 2.30 x 10 = 23 mi/hour Distance to be covered = 2.25 x 102 = 225 km Time to…

Q: A chemistry student needs 25.0 mL of ethanolamine for an experiment. By consulting the CRC Handbook…

A: The objective of this question is to calculate the mass of ethanolamine that the student should…

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: Your calculator gives you the number 1761.2868 as the volume (in cm^ 3) of a box 2.0 ft by 6.5 cm by…

A: When rounding off the result of a multiplication, the number of significant figures in the final…

Q: The density of gold is 19.3 g/cm3. Johan van der Smoot determines the mass of an irregularly shaped…

A:

Q: a small block of a metal with a mass of 223.1g when submerged in a beaker containing water, the…

A: Mass of metal = 223.1 g Density of metal = 7.41 g/cm3 = 7.41 g/mL

Q: Evaluate the expression and report the answer to the proper number of significant figures. log (9.9…

A:

Q: the us national institute of standards and technology used mercury gauge as a primary standard for…

A: given, mass of mercury = 225 kilogram = 225000 grams density of mercury = 13.6 g/mL

Q: perform the indicated calculation. Express your answer with the correct number of significant…

A:

Q: The density of air at ordinary atmospheric pressure and 25 oC is 1.19 g/L. What is the mass, in kg,…

A:

Q: A sample of liquid rocket fuel is stored in a sphere-shaped fuel tank that has an inner diameter of…

A: Solution Light metals have high heat unharness, creating them enticing as fuels or fuel elements. As…

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

Q: A chemistry student needs 15.0 g of ethanolamine for an experiment. By consulting the CRC Handbook…

A: According to the question,The student needs the mass of ethanolamine = 15.0 g.The density of the…

Q: A meteor has a volume of 9235 ft3 , what is the mass in kg of the meteor if the density is 0.92…

A:

Q: A physical chemist measures the temperature I inside a vacuum chamber. Here is the result. T= -40.1…

A: Here we are asked to find the temperature in SI unit.SI unit of temperature is K, so we need to…

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: Mass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In…

A: Volume can be calculated using the following equation.

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: The answer to a multiplication or division is rounded off to the same number is significant figures…

Q: Convert 2.26 x 10^-6 to each unit. Express your answer in milligrams to three significant figures.…

A:

Q: The density of silver is 10.5 g/cm³. What is the mass of a silver bar (in gms) that measures 0.1000…

A:

Q: The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × cm × 1.00 cm block of…

A: given density = 7.87 g/ml cross section = 4.00 cm × 4.00 cm × 1.00 cm

Q: Calculate the mass of iron(III) oxide (Fe₂O3) that contains a million (1.0 × 106) oxygen atoms. Be…

A:

Q: A chemistry student needs 55.0 mL of tetrahydrofuran for an experiment. By consulting the CRC…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: In given question, multiply and divide given measurements and answers to  correct significant figure…

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

A: The objective of this question is to calculate the mass of ethanolamine that the student should…

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: We have to find the number of molecules of water in a given volume. The density of water is also…

Q: Ethylene glycol (antifreeze) has a density of 1.11g/cm^3 What is the mass in g of 424 mL of ethylene…

A:

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: The maximum dosage of medicine A is listed as 20.0 mg per kg of body weight per day. The adult…

A:

Q: e the chemist has added to the flask. Be sure your answe mg x10 X 3

A: Given,           Volume of Hg2Cl2 solution= 385.0 mL = 0.385 L            Concentration of Hg2Cl2…

Q: A chemistry student needs 90.0 mL of carbon tetrachloride for an experiment. By consulting the CRC…

A: Given, Note: 1 mL = 1 cm3 Volume of Carbon tetrachloride = 90.0 mL = 90.0 cm3 Density of Carbon…

Q: Please answer this question as fast as you can please and tahnk you. I will afterwards write an…

A: To solve this problem we have to use significant figures rules .

Q: If the average density of moon is 5.13 g/cm³, what is the mass of moon in grams? (the radius of moon…

A: Given: Density of moon = 5.13 g/cm3  And radius of moon = 1737 Km = 1.737 × 108 cm…

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: The label on a soft drink bottle gives the volume in two units: 2.0 L and 67.6 fl oz. Use this…

A: Volume of a liquid can be expressed in more than one units, such as L, cm3, dm3 etc. in which the…

Q: The mass of a piece of metal at 183.4 K was found to be 37.5 grams.  What is the density of the…

A: Given, mass of metal = 37.5 grams.              Volume = 7.2mLThe grams are converted into…

Q: Convert 2.85×10−5 LL to picoliters.   Express your answer with the appropriate units. Use the…

A: The three dimensional space occupied by a matter is known as volume. It is measured in terms of…

Q: Using the listed equalities, convert the following numbers to different units. Make sure that you…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: ->In addition and subtraction answer contains the lowest number of decimal places.-> In…

Q: An iceberg has a volume of 8365 ft^3 What is the mass in kilograms of the iceberg? The density of…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: The single proton that forms the nucleus of the hydrogen atom has a radius of approximately…

A: Given : Radius of nucleus = 1.0 x 10-13 cm. Radius of hydrogen atom = 52.9 pm. Convert the radius of…

Q: A recent study found that the median concentration of lead in Canadian tap water is 2.3 x10-8 mol/L.…

A: Given,  The concentration of lead in Canadian tap water =  2.3 x10-8 mol/L. The mass of lead…

Q: A chemistry student needs 75.0 g of methyl acetate for an experiment. By consulting the CRC Handbook…

A: Mass of methyl acetate= 75.0 grams and density of methyl acetate = 0.934  g cm-3 . we need to…

Q: 459.46 g 0.73 mL 7.808 mol L X 1.2 L = 931.9 g 0.82 mL = mL ☐mol g mL

A:

Q: The density of mercury, the only metal that is a liquid at room temperature is 13.6 g/mal. Calculate…

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.