A chemistry student needs  55.0mL  of diethylamine for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of diethylamine is  ·0.706gcm−3 . Calculate the mass of diethylamine the student should weigh out. Be sure your answer has the correct number of significant digits.

Q: The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10- cm What is…

A: The relation between cm and nm is - 1 cm = 1 x 107 nm

Q: Mass= 1.00 lb volume= 500 cm^3 calculate the density in grams per cubic cemitermiter

A: The density of a substance is defined as the mass of the substance present per unit volume. Given:…

Q: РОН 3D 10.8 1.4 x 104 М NaOH 3.1 х 10% М НСІ [Он] %3 1.1 х 10° М [н]3 2.0 х 10м

A:

Q: In the opening scene of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol…

A: A) Given : mass of sand = mass of idol And volume of idol = 1.5 L Since mass = density X volume…

Q: Which of the following is a physical change? Freezing soup Cooking shrimp Electrolysis f water to…

A: Physical change is a process which involves transformation of substance from one form to another…

Q: The density of mercury is 13.6 g/cm^3. What is the mass of 6.50 cm^3 of mercury? (^ means that the…

A: Given  Density of mercury = 13.6 gram/cm3  Volume of mercury = 6.50 cm3 Mass = ?

Q: How many significant figures should the answer for the following calculation have? (433.621 - 333.9)…

A:

Q: The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10 cm . What is…

A:

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: Here, height is given in two parts as above. Then the addition of two-part values as below…

Q: A chemistry student weighs out 0.120 g of lactic acid (HCH,O,) into a 250. mL volumetric flask and…

A:

Q: The distance from Earth to the Sun is 1.50 x 108 km. What is the distance expressed in Gigameters…

A: Conversion of units : This can be done by a method called unitfactor method or called dimensional…

Q: A chemistry student weighs out 0.232 g of ascorbic acid (H,C,H,O6), a diprotic acid, into a 250. mL…

A:

Q: The following items are part of either the macroscopic domain, the microscopic domain, or the…

A: Symbolic domain includes special language, symbols, graphs, drawing, formulas used to represent…

Q: A jet airplane reaches 768. km/h on a certain flight. How long does it take to cover 323. m? Set the…

A:

Q: -7 mmol/L mercury(I) chloride (Hg,Cl,) solution to a reaction flask. Calculate the mass in…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: The population density of worms in a particular field is 33 worms per cubic meter of soil. How many…

A: Given dimensions of field = 1 km × 1.5 km density of worms = 33 worm per cubic meter of soil

Q: An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to…

A: Density :-  The ratio of mass of a substance to the volume occupied by that substance under the…

Q: 4) For the displacement of the metal, ethanol (d 0.79 g/mL) was mistakenly used in the liquid in the…

A: Density is defined as the mass of the object upon the volume of occupied by the object   density d=…

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

Q: A sample of an ethanol-water solution has a volume of 54.4 cm^3 and a mass of 49.9 g. What is the…

A: The mass of ethanol is - Mass = density×volume Mass = 0.789×54.4 Mass = 42.9216 gram   Then, total…

Q: A chemistry student needs 40.0mL of pentane for an experiment. By consulting the CRC Handbook of…

A: Given,Density = 0.626 g/cm3,Volume = 40.0 ml.

Q: Ultrapure silicon is used to make solid-state devices, such as computer chips.  If the volume of a…

A:

Q: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 2.3 x 10 umol of iron(II)…

A: Change micro mol to mili mol the volume in L. then divide it.

Q: Read the following descriptions of the element bromine and indicate which are physical properties…

A: Density of a substance is mass of that substance in per unit volume.  Corrosion is change in…

Q: A 25.00 grams sample of a metal is placed carefully in a graduated cylinder, and then benzene is…

A: Given : mass of metal = 25.00 g Mass of metal + benzene = 60.85 g Volume of metal + benzene = 50.00…

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Significant figures of a number are  necessary to indicate the quantity of something. It is also…

Q: The output of a plant is 4335 pounds of ball bearings per work-week (a work week = five days). If…

A: Given: Mass of each ball bearing = 0.0113 g Total mass of ball bearings formed in 5 days = 4335…

Q: The density of the organic compound benzene is 0.879 g/mL.Calculate the mass in grams of 1.00 qt of…

A: Given information,    Density of benzene is 0.879 g/mL.    Volume of benzene is 1.00 quart

Q: In the area of nano-chemistry, particles defined as nanoparticles range in size from 1-2500 nm.  1…

A:

Q: Given that there are 220.0 yards in 1.000 furlong, 2.54 cm in 1.00 inches, and two weeks in a…

A:

Q: If a block of copper measures 2.00 cm x 4.00 cm x 5 cm and weighs 356 g, what is its density?

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: in the opening scene of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol…

A: Answer: Given data: dgold=19.32g/cm3dsand=3.65g/cm3 Dimensions of gold idol 5inch×5inch×5inch

Q: if a plot of weight in g vs volume in ml for a metal gave the equation y=13.41x and R^2= 0.9981 what…

A: Density, mass and volume of a metal are related as:

Q: Lithium is a soft, gray solid that has the lowest density of any metal. It is an essential component…

A: The given values for rectangular slab of lithium are: m (mass)=1.49×103 mg=1.49×103×10-3 g=1.49 gl…

Q: A student determined in a set of four experiments that the density of magnesium metal was 1.66…

A: The data is given as follows: 1.66 g/mL, 1.65 g/mL, 1.67 g/mL, and 1.67 g/mL Accepted value for…

Q: The density of pure silver is 10.5 g/cm3  at 20 degrees Celsius. If 5.25 g of pure silver pellets is…

A: The volume of silver is calculated from the given density (10.5 g/cm3) and mass (5.25 g) of silver…

Q: The speed of light is 2.998x10^8 m/s. How long does it take light to travel 40.cm? Set the math up.…

A: Given that,    Speed of light, s = 2.998×108 m/s   Distance travel by light, l = 40.0 cm  Time taken…

Q: Carry out each of the following calculations, paying special attention to significant figures,…

A: Significant figures can be defined as a total number of digits in number including the last digit…

Q: Molecular distances are given in nano-meters, where 1nm is equivalent to 1 x 10-9 meter. If the…

A:

Q: The density of mineral oil is 0.834 g/mL. What is the mass in kg of the mineral oil in a cubic…

A: Given that: density of oil = 0.834 g/mL side of a cube = 11 inches. To find: The mass in Kg of…

Q: A sample of tap water contains 1.95 x 103 ppm CaCO3(aq). Assuming the density of tap water is…

A:

Q: the unit of land measure in the english system is the acre, while that in the metric system is the…

A: We have to calculate the area in hectares.

Q: If a sample of unknown substance has a mass of 3.50 kg and a volume of 1.30 L, what is the density…

A: Given : Mass of substance = 3.50 Kg = 3500 g…

Q: How far does light travel in 4.0μs?

A:

Q: 2.8 x 4.5039 =? what is the result of the operation expressed in significant numbers?

A: Since we know that according to the product rule , the least number of significant figures are…

Q: At a particular instant in time, the Earth is judged to be92,955,000 miles from the Sun. What is the…

A: Significant figures can be defined as the total number of digits present in the number including…

Q: Ariel was wondering how much water there was in the sea.  If the total amount of water in the sea is…

A: Given, Volume of water = 3.73 × 108 km3

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.