10 mL of hydrogen contains 2X103 molecules of hydrogen at certain pressure and temperature. Calculate the number of molecules of oxygen whose volume is 200 mL at the same  temperature and pressure

Q: A chemist prepares a solution of potassium permanganate (KMnO4) by measuring out 2.5 μmol of…

A: Given, Note: 1 µmol = 10-6 mol moles of potassium permanganate (KMnO4) = 2.5 µmol = 2.5 × 10-6 mol…

Q: A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO) solution to a reaction flask.…

A: Given: Volume is 145.0 mL 0.00260 mol/L of calcium sulfate

Q: a researcher is preparing for an experiment that requires 225g phosphoric acid. the only container…

A: We know , Density = mass / volume By using this relation we can calculate the volume of phosphoric…

Q: The gas density of water in a room measuring 4.12 m x 6.44 m x 5.39 m is 1.08 ug/cm3. Calculate the…

A:

Q: Convert the following measurement. kg 8.03 x 10 mol L mol dL

A:

Q: The volume of blood ejected by the humming birds heart per beat is approximately 1cm3. The average…

A: Volume of blood ejected in one beat = 1 cm3 Volume of blood ejected in 1250 beats (1 min): Volume=1…

Q: 1. A balloon containing 3.45 x 1026 molecules of hydrogen gas has a volume of 1.55 L. How many…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: A website promoting the use of alternative energy vehicles and hybrid technologies claims that, "A…

A: Gallons original quantity = 40 gallons CO2 produced from 40 gallons = 750 lbs. Gasoline primary…

Q: The sulfur in an 8-tablet sample of the hypnotic drug captodiamine, C21H29NS2 (359.6 g/mol) was…

A: Given :  Molar mass of captodiamine = 359.6 gm/mol  Mass of BaSO4 recovered = 0.3343 g  molar mass…

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: What volume (in Liters) of nitrogen gas (N2) is equal to 3.42x1022 molecules of this substance?

A:

Q: Given the measurement of 7.00 L,  (a) what is the accuracy of this measurement? (b) what is the…

A: (a) The accuracy of 7.00L is 2.(accuracy of a number is the number of digits to the right of the…

Q: A sample of carbon monoxide initially at 97.0°C was heated to 194°C. If the volume of the carbon…

A: Volume of CO2 at 194°C, V1 = 670.8 mL T1 = 194°C = 467 K Volume of CO2 at 97°C, V2 = ? T2 = 97°C =…

Q: The Helium-filled balloon is initially inflated to a radius of 6 inches (assume a sphere). The…

A:

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

A: Stoichiometry of a balanced chemical gives the relationship between the amount of reactants and…

Q: In heavy water, each of the hydrogen atoms is replaced by a deuterium atom. If the density of…

A: Heavy water is the deuterium oxide, which is another form of water containing heavier isotope of…

Q: Calculate the volume in in3 of a 5.0 kg bar of copper.

A: The relation between volume and mass is given as: Density = mass/volume So, volume = mass/density…

Q: The average dollar bill is 1.8x107 nm long and weighs 0.987 g.  The distance to the sun is 1.5x108…

A: Mole : Mole is the unit by which we measure the amount of substance. One mole is equal to the number…

Q: The physical fitness of athletes is measured by “VO2 max,”which is the maximum volume of oxygen…

A: Given, VO2 max for an average male = 45 ml VO2 max for a world-class male athlete = 88.0 ml (a) Mass…

Q: the A sample of argon weighing 11.1 g occupies a volume of 15.7 L. What is the new volume if the…

A: [2.]  m1 = 11.1 g  V1 = 15.7 L  V2 = ?  m2 = 22.2 g  Molar mass of Ar = 39.948 g/mol n1 = 11.1 g /…

Q: If 2.56 g of argon gas occupies a volume of 4.2 L, what volume will 1.18 moles of argon gas occupy…

A:

Q: A chemist has a 19.50g sample of drinking alcohol (ethyl alcohol). what is the volume ogf the…

A: The relationship between mass and volume is given below.

Q: 13. The mass of water delivered by a buret is 11.8159 g at 15 °C. What is the calculated actual…

A: Density is defined as mass of the substance upon the volume occupied   density = mass / volume…

Q: Assuming that gasoline is 100% isooctane and that the density of isooctane is 0.792 g/mL, what mass…

A: Given reaction,        C8H18 + 12.5O2  → 8CO2 + 9H2O

Q: A chemist determines by measurements that 0.035 moles of chlorine gas participate in a chemical…

A: Moles of Cl2= 0.035 moles  Molar mass = 70.90 g mol-1 Then,

Q: A sample of O2 gas has 7.5x10^24 molecules. How many miles of O2 are contained in it? How much does…

A: 1 mole of O2 gas contains Avogadro’s number of molecules.

Q: What is 393.83 kJ/mol rounded to three significant figures?

A: Based on the significant figures rule, the number to be rounded off is followed by digit zero or…

Q: What volume of nitrogen gas (N2) is equal to 3.42x10^22 molecules

A: At STP:- 1 mol N2= 22.4L 1 mol N2= 6.022 x 1023 N2 molecules  6.022 x 1023 N2 molecules = 22.4 L…

Q: A sample of O2 gas at a given temperature and pressure has a density of 1.30 g/L. What is the…

A: Density of O2 = 1.30 g/L Molar Mass of O2 =32 g/mol Density of C3H8 = unknown Molar mass of C3H8 =…

Q: Nitrogen and oxygen combine to form nitric oxide: N2 + C O2 → 2NO. Name the law used for the…

A: Nitric acid chemically denoted as NO is a colorless gas and is one of the major oxides of nitrogen.…

Q: A chemist adds 1.55 L of a 0.0032 mmol/L copper(II) fluoride (CuF, solution to a reaction flask.…

A:

Q: Determine the number of moles in 247.6g of Cl2? Round to 2 decimal places.

A: Given: Mass of Cl2 =247.6 g The molar mass of Cl2 =70.906 g/mol Number of moles=?

Q: A student measures the volume of a gas sample at several different temperatures. The results are…

A: The initial temperature of the gas is = 298 K The final temperature of the gas is = 335 K The…

Q: Determine the volume of hexane (C,H14) in liters that contains 6.53 x 1025 molecules of hexane. The…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: A chemist adds 1.75 L of a 2.80 × 10 -5 mol/L mercury(II) iodide (Hgl,) solution to a reaction…

A: The concentration of any solution can be given by its molarity, molality and normality. The molarity…

Q: Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon…

A: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) As no of moles of the gases proportional to the volume of the…

Q: Sulfur dioxide gas, SO₂(g), contributes to acid rain. Natural sources of sulfur dioxide include…

A:

Q: What is the density of a sample of gold if 1.19x1023 atoms occupies 1.86 cm. Molar mass of the metal…

A: Density is defined as the ratio of mass to volume. The SI unit of density is kg/m3. One mole is the…

Q: If the average speed of a helium atom at a certain temperature is 1250 m/s, what is the speed in…

A:

Q: A chemical engineer must report the average volume of a certain pollutant produced by the plants…

A: Average value of a sample is calculated as the ratio of sum of individual values to the number of…

Q: the volume of an irregular shaped rock is determined by displacement. when the rock is added to…

A: Given: The initial volume of water in which the rock is added = 38.5 mL. The water volume rises to…

Q: A drink sold in a health food store contains 0.50% (w/v) of vitamin C. What volume would you have to…

A: This problem can be solved by using the formula given below as; %wv = Mass of solute (g)Volume of…

Q: Aluminum (Al) – Lithium (Li) alloys are widely used in the aircraft industry to reduce weight and…

A: According to the question we have, The desirable density is given by ρ = 2.50 g/cm3 and we know…

Q: The Empire State building in New York City is approximately 1250 ft1250 ft tall. How many U.S. half…

A: Given : height of building = 1250 ft And thickness of each half dollar bill = 2.15 mm The…

Q: The Gateway Arch in St. Louis, MO is approximately 630 ft tall. How many U.S. dimes would be in a…

A: Given the height of Gateway Arch = 630 ft Given the thickness of dime = 1.35 mm  We have to find how…

Q: same volume of ethyl ether vapor to pass through the same hole? b) What volume of chlorine will…

A: Molar mass of O2(M1) = 32 g Molar mass of ethyl ether(M2) = 74 Rate of effusion = Volume…

Q: A sample of helium gas occupies 0.475 L. What is this volume in cm3?

A:

Q: A sample of gas consisting of 5.51 mol occupies a volume of 11.73 L. If another sample of the same…

A: Given that:  Initial moles of gas(n1) = 5.51 mol Initial volume(V1) = 11.73L Final moles of gas with…

Q: Convert the following measurement. kg 3 4.6 x 10 mol · L mol · dL

A: Apart from the SI unit of any physical quantity, there are several other units in which a physical…

Q: A chemist adds 400.0 mL of a 3.3 mol/L silver nitrate (AGN0,) solution to a reaction flask.…

A: The molarity is a unit of concentration of a solution. It is defned as the number of moles of solute…

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.