A sample is found to contain 9.80×10-5 g of salt. Express this quantity in milligrams.

Q: The population density of worms in a particular field is 34 worms per cubic meter of soil. How many…

A: The volume of soil is calculated as,

Q: You are assigned the task of separating a desired granular material, with a density of 3.26 g/cm°,…

A: Given: The density of desired granular material = 3.26g/cm3 The density of undesired granular…

Q: A chemistry student weighs out 0.0345 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric…

A: Molarity is defined as total number of solute present in 1000 ml of solution .   For neutralisation…

Q: A chemist prepares a solution of copper(II) fluoride (CuF,) by measuring out 0.022 g of copper(II)…

A:

Q: (5 Sulfuric acid (0.45M) (8T.5 ml) Copper ( hydroxide (1.15M) (15:5ml) Copper () sulfate ? grams H2O

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molarity = moles/volume of solution…

Q: The safe dosage of the IV antibiotic ceftriaxone for children weighing more than 2.0 kg is 60. mg…

A:

Q: When you perform the following operations, how many significant figures should your answer have?…

A:

Q: International computer communications are often carried by optical fibers incables laid along the…

A: Given, the mass of optical fiber = 1.19 x 103 lb/m            Length of each strands optical fiber…

Q: Consider the following: you mix 9.90 mL of CHC13 (d = 1.492 g/mL) and 5.20 mL of CHBr3 (d = 2.890…

A: total volume = 9.90 + 5.20= 15.10 mL mass of CHCl3 = 1.492 x 9.90 = 14.77 g mass of CHBr3 = 2.890 x…

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

A:

Q: Does it make a difference if you use a volumetric flask vs a beaker vs a graduated cylinder to make…

A: There is a difference in the utility of the volumetric flask, beaker, and graduated…

Q: A solution is labeled "(1.810x10^1) % sucrose by mass". If an experiment requires (7.79x10^1) g of…

A:

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: A data is said to be precise if experimental values are close to each other.  A data is said to be…

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: It has been estimated that there is 4 x 10^-4 mg of gold per liter of seawater. At a price of…

A: 1 km3 = 1015 cm3. 1 cm3 = 1 milliliters 1 L = 1000 milliliters 1 L = 1000 cm3 1015 cm3 can be…

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

A: We know that, 1 nm= 10-9 m then,

Q: The concentration of carbon monoxide in an urban apartmentis 48 mg>m3. What mass of carbon…

A:

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: A chemistry student weighs out 0.179 g of chloroacetic acid (HCH,CiCo,) into a 250. mL volumetric…

A: The molar mass of chloroacetic acid is 94.5 g/mol. The number of moles of chloroacetic acid is…

Q: You are working in the laboratory and are testing the salinity of ocean water in various areas along…

A: Mass %ge of a component may be calculated by dividing the mass of that component with the volume of…

Q: A chemistry student weighs out 0.183 g of sulfurous acid (H,SO3), a diprotic acid, into a 250. mL…

A: According to law of gram equivalence, for an acid base reaction at equivalence point, number of gram…

Q: A chemistry student weighs out 0.0377 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask…

A: The solution is given below -

Q: A stack of paper has a volume of 187 cube inches Now all the sheets are laid out on the floor,…

A: Given: Volume of a stack of paper = 187 cubic inches Area covered by paper       = 46,750 square…

Q: When you perform the following operations, how many significant figures should your answer have?…

A:

Q: How many milliliters are in 7.55 x 10-3 decaliters?

A:

Q: A chemistry student weighs out 0.146 g of lactic acid (HC,H,O,) into a 250. mL volumetric flask and…

A: Mass of lactic acid = 0.146 gMolar mass of lactic acid = 90 g/molMoles of lactic acid = Mass of…

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: In this section, he quickly converts the number measured from grams to milligrams. 0.0015g x 1000mg…

A: Mass in grams = 0.1254 g  This mass in mg  = ?

Q: Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot with the dimensions of…

A:

Q: Filtration is the most appropriate method for separating a solution of water and which substance? A.…

A: Filtration is the most appropriate method for separating a solution of water and which substance?

Q: to make a tablet of aspirin, it requires 249 mg of salicylic acid. if the chemist purchased 9.0 x…

A: mass  of salicylic acid purchased by chemist = 9.0 x 10-3 OZ  Mass of salicylic acid required to…

Q: To identify a metal, an experimenter placed, 4850cg sample in a graduated cylinder. He then poured…

A:

Q: A 65.00 mL sample of 0.5 M nitric acid is introduced into a flask, and water is added until the…

A:

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

A: Given: The volume of atom = 7.8 x 10-31 m3  This value of volume has to be converted into cubic…

Q: What is the equivalent volume in milliliters taken up by 9 gr boric acid powder if the density of…

A:

Q: A certain solution is 4.40% by mass in calcium carbonate (CaCO3) if the density of the solution is…

A: Given that: Mass percent of calcium carbonate = 4.40% Density of the solution = 1.02 g/mL Volume of…

Q: The concentration of carbon monoxide in an urban apartment is 48 µg/m°. What mass of carbon monoxide…

A: Concentration of CO = 48 µg / m3 or 48 × 10-6 gm/m3 Volume of room = 12 × 12.5 × 21.5 ft. 1 Feet =…

Q: A chemistry student weighs out 0.0932 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask…

A: The quantitative analysis method for determination of the concentration of acid or the base by…

Q: How many ounces of gold are in a 14 karat gold that weighs 2.9 ounces?

A:

Q: Blood alcohol content is a measure of alcohol in the blood as a percentage. It is calculated in…

A: A BAC of 0.08% means that 0.08 g of alcohol is present in 100 mL of blood  So the required…

Q: t is recommended that drinking water contain 1.6ppm fluoride (F-) for the prevention of tooth decay.…

A: Given: The diameter of the reservoir, (D) = 4.5×102 m The radius of the reservoir, (r) = 2.25×102 m…

Q: What mass (in kg) of saltwater would fill an olympic-size swimming pool that is 50.0 meters length,…

A:

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

A: 1 m = 109 nm 1 m3 = (109)3 nm3 = 1027 nm3

Q: A student pipetted 10 mL of a sample solution into a 250 mL volumetric flask and diluted it to the…

A: According to the question the student takes 10 mL of sample in 250 mL volumetric flask. The rest 240…

Q: a thin sheet of nickel measured 5.00 cm by 7.00 cm was found to weigh .350 g. if the density of…

A:

Q: One of the common intravenous fluids, called physiological saline, is a homogeneous mixture of NaCl…

A: Given: The mass % of NaCl in thephysiological saline, =  0.89% (m/m). The density of physiological…

Q: In some polluted city air the amount of lead was measured at 3.1 x 10^-6 g/m^3. What is the amount…

A: Cubic meter and cubic centimeter are some common units of volume. Similarly, grams and kilograms are…

Q: what is the volume of 1.21x10^-1 grams of a solution if its density is 0.880 g/mL?

A: Mass of solution = 1.21 × 10-1g Density of solution = 0.880g/mL

Q: Give the mass of the solute and mass of the solvent for 1.30 LL of a solution that is 17.0 %% of…

A: Given, % by mass of Pb(NO3)2 = 17.0 % Volume of solution = 1.30 L = 1300 mL     (1 L = 1000 mL)…

Q: A chemist prepares a solution of calcium bromide (CaBr,) by measuring out 68. g of calcium bromide…

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.