Be sure to answer all parts. Pheromones are compounds secreted by females of many insect species to attract mates. Typically, 1.00 × 10−8 g of a pheromone is sufficient to reach all targeted males within a radius of 0.500 mi. Calculate the density of the pheromone (in grams per liter) in a cylindrical air space having a radius of 0.500 mi and a height of 33.0 ft (volume of a cylinder of radius r and height h is πr2h). Enter your answer in scientific notation.

Q: 17. A contaminated pond has a lead(II) ion concentration of 1.4 mg/L. This pond has a surface area…

A: Given that the surface area of the pond is 135 ft2. Depth of the pond is 2.8 ft. Volume of the pond…

Q: Suppose 0.156 g of sodium chloride is dissolved in 100. mL of a 46.0 m M aqueous solution of silver…

A: we have to calculate the molarity of chloride ion

Q: A chemist adds 0.30 L of a 0.865 mol/L iron(II) bromide (FeBr,) solution to a reaction flask.…

A:

Q: Be sure to answer all parts. Enter your answer in scientific notation. Carry out the following…

A:

Q: 2. The approximate radius of a nucleus, r, is given by the formula r = A$(1.3x10-13cm), where A is…

A: Given: Atomic radius of Al = 143 pm Radius of nucleus=A13(1.3×10-13) cm

Q: A chemist must dilute 0.0954 L of 2.22 M aqueous sodium chloride (NaCl) solution until the…

A: Given data :  Initial Volume of NaCl solution before dilution (V1) = 0.0954 L   Initial…

Q: 7) How many kilograms is a 27 oz. bag of M&M's? 8) How many kilometers can a car travel on 19…

A: Since you have posted multiple questions, we are entitled to answer the first 3 only.

Q: You add 297 grams of NaCl to a container and then you add 898 grams of water to that same container.…

A:

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: Which of the following is not intensive property? O density O boiling point O melting point O volume

A: Intensive property : It is a thermodynamic property that does not depend on the amount or quantity…

Q: A chemist adds 0.20 L of a 0.0145 mmol/L sodium nitrate (NaNO3) solution to a reaction flask.…

A: Volume of the solution = 0.20 LConcentration of the solution = 0.0145 mmol/L = Mass of sodium…

Q: Suppose 2.89 g of zinc iodide is dissolved in 350. mL of a 46.0 m M aqueous solution of potassium…

A:

Q: 38) During the early 1970s, the price of copper rose to a point where the cent contained almost one…

A:

Q: In the “Methodé Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine.…

A: 750 ml Of grape juice is allowed for fermentation untill 12.5% by volume of ethanol. Density of…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: Percent yield = (Practical yield/theoretical yield)×100

Q: Fingernail–polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle…

A: Given: Volume of acetone, V = 325 mL = 325 cm3 Density of acetone, d = 0.788 g/cm3 Mass of acetone =…

Q: Gaseous ethane (CH3CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2)…

A:

Q: A chemist adds 155.0 mL of a 4.73M silver nitrate (AgNO,) solution to a reaction flask. Calculate…

A:

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

A: NaOH + HCl ------> NaCl + H2O Mass of HCl = 1.09g  Mass of NaOH = 0.71g  Molar mass NaOH =…

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: Suppose 1.39g  of potassium nitrate is dissolved in  350.mL  of a  75.0mM  aqueous solution of…

A: Molarity is defined as number of mole present in 1L solution. Here, 39.285 mmol KNO3 contains in 1L…

Q: Liquid octane (CH₂(CH₂) CH3) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide…

A: Liquid octane will react with gaseous oxygen to give gaseous carbon dioxide and gaseous water. The…

Q: e the maximum mass of water that could be produced by the chemical reaction. Be

A:

Q: Liquid octane (CH3(CH2)6CH3) will react with gaseous oxygen O2 to produce gaseous carbon dioxide…

A: The balanced reaction between octane and oxygen is written below.2C8H18+25O2 → 16CO2+18H2OThe mass,…

Q: In the combustion of ethanol, 20.50 g of carbon dioxide gas was produced, What is the volume in mL…

A:

Q: Gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen O2 to produce gaseous carbon dioxide…

A: As given in the question that butane reacts with gaseous oxygen to produced carbon dioxide and…

Q: How many mL of (1.2000x10^-1) M nitric acid are needed to react completely with (3.35x10^1) mL of…

A:

Q: Suppose 42.5 g of copper(II) nitrate is dissolved in 250. mL of a 0.70 M aqueous solution of sodium…

A:

Q: Suppose 0.314 g of potassium chloride is dissolved in 100. mL of a 14.0 m M aqueous solution of…

A: Volume of solution = 100 mLMolarity of ammonium sulfate = 14.0 mMMass of potassium chloride added =…

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: The source of bitterness in dark chocolate is the compound theobromine, an alkaloid present in cocoa…

A: The number of molecules of theobromine present in the sample = 6.58 × 10206.58 × 1020 molecules…

Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

Q: sample of 0.215 M Co(NO3)2 contains 1.12 x 1022 nitrate ions. The volume of the sample is _______…

A:

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by measuring out 15. g of copper(II)…

A:

Q: Suppose you have a car which gets 51 miles per gallon of gasoline in the city. Suppose you take the…

A: The objective of the question is to find out how many kilometers a car can drive on city streets on…

Q: (CH,(CH,),CH;) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,) and…

A:

Q: A chemist adds 230.0 mL of a 0.049 mm has added to the flask. Be sure your answ Mu mol

A: Moles of NiCl2 = ( Molarity ) • volume  Moles of NiCl2 = ( 0.049 mmolL-1 ) • ( 230mL )  [ NOTE : 1m…

Q: Borax, a common laundry product, is sodium borate decahydrate.  The chemical formula is Na2B4O7 ⋅⋅…

A: Using the molar mass of borax and molar mass of water we can find percentage of water.

Q: A chemist adds 75.0 mL of a 3.20 g/dL potassium dichromate (K,Cr,0, solution to a flask. Calculate…

A: Concentration of potassium dichromate(K2Cr2O7) = 3.20g/dL Volume of the solution = 75.0ml = 75.0ml ×…

Q: A sample of vinaigrette salad dressing has a total mass of 188 g, a total volume of 196 cm³, and…

A: Given,total mass of oil and vinegar = 188 g.total volume of oil and vinegar = 196 cm3density of oil…

Q: You have a mole of ping pong balls and want to ship them to a near-by town. You have packing boxes…

A:

Q: Analysis of a sample showed that it contained 68.3% lead, 10.6% sulfur, and 21.1% oxygen. What is…

A:

Q: Be sure to answer all parts. Fermentation is a complex chemical process of wine making in which…

A: Chemical reaction C6H12O6 → 2C2H5OH + 2CO2 Amount of glucose = 840.9 g Molar mass of glucose =…

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.