Ethyl mercaptan is an odorous substance added to natural gas to make leaks easily detectable. A sample of ethyl mercaptan weighing 3.17 g contains 1.46 g of sulfur. What mass percentage of this substance is sulfur?

Q: in the posted lecture notes! (1 element in 2 typeś of c.p's) Mark x for all that may apply: Pure?…

A: Pure substance: A pure substance is a sample of matter with both definite and constant composition…

Q: In terms of mass, calculate the percentage of the active ingredient for each of the following…

A: Mass percentage is defined as the total mass of the substance( here active ingredients) divided by…

Q: 1.008 4. He 4.003 10 Be 6.941 9.012 LI B C N 10.81 12.01 14.01 16.00 19.00 20.18 15 F Ne 11 12 13 14…

A:

Q: What is the name of the element that is in group 1A and period 1? What is the name of the element…

A:

Q: In the table below, there are descriptions of an experiment on samples of three different chemical…

A: Given that : We have to identify whether the elements are metal or non-metal form the given…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: The changes are as follows according to the given microscopic structure.

Q: The molecular formula for caffeine, one of the key compounds found in coffee and tea, is C8H10N4O2.…

A:

Q: A 2.45 g sample of magnesium completely reacts with oxygen to form 4.06 g of magnesium oxide. Use…

A: Given : Mass of Mg = 2.45g Mass of MgO = 4.06g

Q: We have 40.5 cm of a material. How many g is it? The material has density of 9.50 g/cm O 68.0 g O…

A: • The values provided in the question are:-  i) Density of a material, d = 9.50 g/cm3  ii) Volume…

Q: A sample of metal weighing 2.24 g is combined with oxygen; the metal oxide weighs 23.5 g. The mass…

A: Given values-> Weight of metal = 2.24gram Weight of metal oxide = 23.5gram

Q: Identify all of the true statements, regarding elements, compounds, and pure substances.   a)Pure…

A: Elements consist of a single type of atoms. They cant be further divided into smaller structures and…

Q: The density of copper is 8.94 g/cm°. What is the volume of copper in a 420 g sample? O 378 cm3 O 65…

A: Density of a substance is the ratio of mass to volume. The density is usually indicated by the…

Q: Naturally occurring cobalt consists of only one isotope, 58.9332. A synthetic radioactive isotope of…

A: From given data;  Initially % of 60Co is determined and then weight of 60Co is calculated as…

Q: (a) Palladium (Pd) is an element with properties similar to those of platinum. It is useful in…

A: Given : Mass of bar = 96.03 g Length of bar = 10.7 cm Diameter of bar = 9.82 mm = 0.982 cm…

Q: 32. In which group do all the elements have similar chemical properties? a) P, S, Cl b) Ag, Cd, Ar…

A: In which set of element have similar chemical properties ?

Q: Determine the mass (g) of a sample titanium that has a density of 4.5 x 103 kg/m3 and a volume of…

A: Since density is given by  density = mass / volume  volume given = 38.8 x 1010 cm3  Since 1 m = 100…

Q: What is the edge length (in cm) of a titanium cube that con- tains 2.55 x 1024 titanium atoms? The…

A: Calculate the number of moles as follows, Number of moles =2.41×10246.022×1023=0.4×10=4 moles Now,…

Q: On average, people use one teaspoon (2.5 g) of instant tea to make a 8-oz glass of ice tea. The…

A: 1 oz of iced tea contains 10 mg of caffeine.Therefore, 8 oz of iced tea contains 80 mg (0.08 g) of…

Q: A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the…

A:

Q: 2. Elizabeth has two separate samples of the same substance. One sample is in the liquid state, and…

A: Elizabeth has two separate samples of same compound and among them one is liquid and one is solid.…

Q: Which of the following metals will sink in a basin of mercury whose density is 13.6 g/cc? * Al, 335…

A: Answer: U, 4.19 cc with mass of 81.7g will sink.

Q: A 1980 penny has a mass of 3.025 g and is 85.0% copper. What is the mass of copper in the coin? A)…

A:

Q: . Using the measured circumference (c= 21.3 cm) of the glass ornament, calculate the radius in cm.…

A: We have to find How many silver atoms thick is the lining?  Given radius of a silver atom is 160 pm

Q: The mass percent of a solution is 12.00% and contains 30.0 grams of MgCl2. What is the total mass of…

A: Mass %=Mass percentage is calculated as the mass of a component divided by the total mass of the…

Q: Gold (Au) has a density of 19.32 g-cm-3. If a spherical gold nanoparticle has a diameter of 50 nm…

A: Density of Gold nanoparticle is 19.32 g/cm3 and its volume is 7*104 nm3.

Q: An antacid tablet weights 1.36g. If the percent active ingredient of calcium carbonate is 38.2%,…

A:

Q: 1. Which is true about the Law of Conservation of Mass? 3. What was one of the tests that Lavoisier…

A: 1. D. Atoms cannot be created or destroyed, only rearranged. The Law of Conservation of Mass implies…

Q: It is estimated that an adult person contains 6.3 × 103 ppm phosphorus. What mass of phosphorus in…

A: By definition, ppm refers to parts per million.  Therefore, ppm of phosphorus in adult person would…

Q: What is the symbol for the element that is in group VIIA(17) and period 3?   What is the symbol…

A:

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 10.810.8 grams. Tia…

A: Number of atoms = number of moles x 6.0224 x 1023 Number of moles = Mass/molar mass

Q: Brass is an alloy of copper and zinc. Varying the mass percentages of the two metals produces…

A: Mass of Yellow zinc = 135 g Brass = an alloy of Cu and Zn Yellow zinc = A brass (34-37)% Zn by mass…

Q: Student K was asked to determine whether his bar was made of pure palladium.  II) Student S was…

A:

Q: 2. Calculate the volume of 435 g block of copper. d=m =V=Mv =H359 8.939lcm3 48.712 3D 5. A…

A: Since we only answer one question, we’ll answer the first one. As you have solved the first question…

Q: Which methods separate a mixture according to the size of the particles? distillation and…

A: Given: To identify the methods which separate the mixture based on the size of the particles.

Q: Use the following information to determine the mass of chlorine combined with the magnesium to two…

A: Given, mass of crucible = 35.1  mass of crucible and magnesium = 38.92  mass of crucible and…

Q: Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and…

A: Density of H2SO4 = 1.153 g/mL Volume of H2SO4 = 50.0 ml  mass of H2SO4 =  Volume x density = 50.0 ml…

Q: We have 12.5 cm of a material. How many g is it? The material has density of 3.50 g/cm O 68.0 g O…

A: Given: Density of material = 3.50 g/cm3. And the volume of material = 12.5 cm3.

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

A: Find volume of atom in cubic nanometre

Q: A study of the Earth by The National Aeronautics and Space Administration (NASA) determined there…

A: Given  7.00 x 1011 tons of carbon    Conversion factor:  1 ton = 907.19 kg  1 kg = 1000 g = 103 g…

Q: 1. a) Calculate the mass percent of NaHCO3 based on the manufacturer's list of ingredients: 325 mg…

A: mass % of NaHCO3 = mass of NaHCO3 in tabletsum of mass of all ingredients x 100 sum of mass of all…

Q: A method of analysis yields masses of gold that are low by 0.4 mg. This method is used for analysis…

A: The relative error is (mass loss/Total mass )x 100. Based on above detail solution is provided…

Q: Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon…

A: According to the law of multiple proportion; When two elements are combined to each other and form…

Q: white powder i-i red blue 4a What event is occuring? Sa. What event is occuring? 6a What event is…

A: We are given different events in image form, and we have to describe what is happening in the event.…

Q: Which statement is FALSE? O A pure substance can be varied by changing the proportion of pure…

A: A pure substance is made purely by a single substance while a mixture is made up of two or more pure…

Q: Which of the noble gases other than radon would you expectto depart most readily from ideal…

A: Ideal gas equation is given by- P: Pressure of the gas. V: Volume of gas. n: number of moles of…

Q: metal g/cm3 aluminum 2.70 zinc 7.13 iron 7.87 copper 8.96 Using the table above determine the…

A:

Q: The distance between two atoms was determined to be 11.4 nm. What is this distance in centimetres?…

A: Distance is measured in different units. For example nanometre (nm), picometre (pm), centimetre…

Q: %3D What is the mass of 24.5 mL gasoline? (density of gasoline = 0.749 g/mL) O 18.4 g O 24.5 g O…

A: Given - density of gasoline= 0.749 g/ml volume of gasoline=24.5 ml

Q: What is the mass of phosphorus in a 45 kg person? mass of P = %3D TOOLS x10

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.