1) A student measures 7.45 cm³ of chloroform using a glass syringe. Given that the density of chloroform is 1.48 g/mL, and the molar mass is 119.38 g/mol, how many moles of chloroform did the student measure?

Q: 1) Perform the following unit conversions: a. 35.7 moles to umol b. 0.065 mL to µL. c. 0.756 g/ml to…

A:

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: The density of ethylene glycol (anti-freeze) is 1114 kg/m3. How much mass (in kilograms) of this…

A:

Q: 2.10x10^23 molecules of water contains how many grams of water?

A:

Q: Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in…

A: The fermentation of glucose involves the reaction

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: Lithium is the least dense metallic element. Its density is 0.534 g/mL. What is the mass of lithium…

A: Given : Density = 0.534 g/mL Volume = 1.00 in3 Convert in3 into mL as follows. 1 in3 = 16.3871 mL

Q: There is one mole of water in the beaker.  A student measured the weight of the 1 mole of water of…

A: Molar mass: The molar mass of an element or compound is defined as the mass of one mole of that…

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

A:

Q: In one box of nails, there are 75 iron nails weighing 0.250 lb. The density of iron is 7.86 g/cm3.…

A: Given that mass of 75 nails of iron = 0.250lb = 113.4g Density of iron = 7.86g/cm3 (a) volume of…

Q: A cheap reliable fertilizer, NH4NO3, adds nitrogen to the soil. If you add 48.5g of fertilizer to…

A: In order to find the amount of nitogen added to the soil we first write down the given data: Mass of…

Q: What mass (in g) of HCl is contained in 45.4 mL of an aqueous HCl solution that has a density of…

A: Volume of an aqueous HCl solution = 45.4 mL  Given that density of 1.084 g·cm−3 at 60°C that means…

Q: What mass of iron in the nail reacted with the water?

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: A saline solution contains 0.92% (w/v) NaCl in water. What volume (in mL) of the saline solution…

A: Given in following question a saline solution contains 0.92%w/v   NaCl in Water.  What volume of the…

Q: Given the following data, what was the dollar amount of the gold that could have been extracted from…

A:

Q: The diameter of a DNA alpha helix is about 8 ✕ 10−8 in. What is its diameter in centimeters?

A: Given: Diameter of DNA α helix= 8×10-8 inWe need to find diameter in cm

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

A:

Q: 1. Perform the following calculations and give the answer rounded to the correct number of…

A:

Q: How many conversion factor(s) can be found in the following statement? " Americans combined drive…

A: Conversion factors are the mathematical relations between one unit of a physical quantity to another…

Q: The density of dodecane, C12H26, is 0.7495 g/mL. Calculate the volume (in mL) occupied by 3.405…

A:

Q: Given the two liquids, gasoline (d = 0.70 g/mL) and chloroform (d = 1.5 g/mL), how could you…

A:

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: Lipitor, a pharmaceutical drug that has been shown to lower "bad" cholesterol levels while raising…

A: Given  The mass of the 1 pill = 1.0g  Active ingredient contain in each pill = 5.5% i.e., (5.5/100)…

Q: Hydrogen has also been considered as an alternative fuel for vehicles designed to combust hydrogen…

A: Given that a hydrogen engine can achieve 80 miles per kilogram of hydrogen gas. Thus, mass of…

Q: 1. A 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: Hello.  This is multiple part question so, we answer the first question only.  If you want answer…

Q: (3.0 mg) x (0.023 g) =

A: The given milligrams can be converted into grams as

Q: Lipitor, a pharmaceutical drug that has been shown to lower "bad" cholesterol levels while raising…

A: Given,2.0g pill contains 7.5% of the active ingredient by mass.Then,25 pills contains = ?

Q: A chemist weighed out 5.3 g of iron. Calculate the number of moles of iron she weighed out. Be sure…

A: Given : weight of iron = 5.3 gram    Find : Calculated the number of moles of iron .   Formula :…

Q: The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is…

A:

Q: The molecular liquid chloroform (CHCl3) has a density of 1.48 g/mL, while the molecular liquid…

A: The mass of 44.0 mL of CHCl3 is calculated as shown below where m1, d, and V is the mass, density…

Q: Substance A has a density of 0.30g/ml and substance B has a density of 0.690g/ml. Are the particles…

A: Density = It may be defined as mass of a substance per unit volume.Mathematically,

Q: quid octane (Ch3(ch2)6ch3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide and…

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: Convert (7.8x10^24) molecules of sodium chloride, NaCl (OR N a C l) to grams of sodium chloride.…

A:

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

A:

Q: The solubility of potassium chromate is 65.7 g per 100 g of water. In an experiment , a student had…

A: Given solubility of potassium chromate is 65.7 g per 100 g of water. Given volume of water is 762…

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

A:

Q: Propylene glycol (C3H3O2) is a clear viscous liquid with a density of 1.04 g/mL. What is the volume…

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

Q: The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is…

A: Parts per million or ppm is term used to express concentration. It is somewhat similar to weight…

Q: he distance between atoms is sometimes given in pico-meters, where 1 pm is equivalent to 1 × 10^–12…

A: Given : distance between layers in pm = 568 pm

Q: 4.25 x 1024 atoms N converted to grams

A: We have given the atoms of nitrogen = 4.25 × 1024 atoms Avogadro's constant = 6.022 × 1023…

Q: A particular brand of beef jerky contains 6.05x10-2% sodium nitrite by mass and is sold in an…

A: Given - Mass % sodium nitrite (NaNO2) =6.05×10-2%             Mass of bag = 8.00 oz

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: You have a patient who weighs 95 pounds. The dosage of a drug is 1.5 mg drug per kg of body mass.…

A: First we need to understand which unit convention are used in the question and which we want to use…

Q: 1.11 Consider the jar of jelly beans in the photo. To get an estimateof the number of beans in the…

A: Given data are: Mass of 6 jelly beans = 3.15, 3.12, 2.98, 3.14, 3.02, and 3.09 g Mass of jar with…

Q: a homeowner no longer desires to have a pool in their backyard. given that the volume of the pool is…

A: Given, Volume  = 52.5 ft3 Density = 1.89 g/cm3 mass = ? kg

Q: To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900 ppm…

A: Formula used  ppm = (Mass of solute/mass of solution) 106 ppm = parts per million  density of water…

Q: The most common oxide of vanadium, V2O5, is used as a catalyst in manufacturing sulfuric acid H2…

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.