A recent study found that the median concentration of lead in Canadian tap water is 2.3 x10-8 mol/L. Calculate the mass, in grams, of lead consumed when an individual drinks 3.0 L of water. You must show your work.  Then, record your final answer in scientific notation, with the correct number of significant digits and proper units.

Q: How to prepare 4% (wt/vol) strontium chloride stock solution?

A: Concentration of strontium chloride = 4%(w/v)

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A: Bond Order of a species is determined by the following formula :  BO = (No. of bonding electrons -…

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Q: 1) NaBH. 2) CH₂OH Select to Draw

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A: To describe the chemistry of the boron with reference to (i) bonding in borohydrides, (ii)…

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Q: Chemistry How many shielding (core) electrons does argon possess? (it is not 8)

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Q: Chemistry Propose an efficient synthetic approach using diethyl malonate as one of the reagents for…

A: by using diethyl malonate as one of the reagents mechanism of the reaction or  the preparation of…

Q: The gas with an initial volume of 24.0 L at a pressure of 565 mmHg is compressed until the volume is…

A: Given,Initial volume of the gas = 24.0 LInitial pressure of the gas = 565 mm HgFinal volume of the…

Q: How many grams are in 6.51 moles of H2SO4?

A: Given, moles of H2SO4 = 6.51 moles mass of H2SO4 = ? Note:  molar mass of H2SO4 = 98.079 g/mol

Q: How many moles of Hydrogen gas will be produced if you start with 2.5 moles of Magnesium and an…

A: Given, The balanced chemical equation :-              Mg + 2HCl --> MgCl2 + H2  We need to find,…

Q: Which reaction below is a redox reaction? a) 2HClO4(aq) + Ba(OH)2(aq) → Ba(ClO4)2(aq) + H2O(l) b)…

A: By considering oxidation numbers to compounds of reactants and products we can figure out the redox…

Q: For nitrogen gas the values of C, and C at 25°C are 20.8 J K-¹ mol-¹ and 29.1 J K-¹ mol-¹,…

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Q: How much heat energy in joules is gained by water with a mass of 491 g, and a temperature change of…

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Q: Suppose 60.0 mL of 0.100 M Pb(NO3)2 is added to 30.0 mL of 0.150 M KI. How many grams of Pbl2 will…

A: The solution has been provided.

Q: 1) Bra, light 2) КОС(СИ) 1) SOCI 2) LIAID)

A: Bromination of alkane is regio-selective  always attacks on more stable tertiary free radical…

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A: In above given reaction, we can see that ester do not contain alpha hydrogen, therefore claisen…

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A: Here we are required to find the Starting material for the synthesis of 3methyl 3 hexanol

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Q: The isoelectric point, pI, of the protein trypsin is 10.5, while that of horse liver alcohol…

A: The isoelectric point of amino acid is the pH at which the net electronic charge of the amino acid…

Q: Draw the enantiomer of the structure below. Н. HO III H H с=0 H -OH OH -ОН CH₂OH

A: Enantiomers are stereoisomers and that are optically active compounds.

Q: Globally, in 2010 and 2012, respectively, there were about 9.20 billion metric tons and 9.60 billion…

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Q: What reagents yield this product in high yield? (A) (C) OH EtOH H* EtONa (B) (D) 1) Hg(OAc)2, EtOH…

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Q: Predict the products of the following reactions: O (a) (b) (c) O O CI + NaOH OCH 3 NH₂ + NaOH + NaCl

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Q: Part A Find the pH of a 0.014 M solution of HCHO₂. (The value of K, for HCHO₂ is 1.8 x 10-4.)…

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A: we have to calculate the number of moles of KClO3

Q: Convert the following structure into Fischer projection formula and designate R.S to the chiral…

A: -> Every chiral carbon has a fixed configuration either R or S .

Q: Consider the process A(0) 73°C A(g) 160.°C, which is carried out at constant pressure. The total AS…

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A: we have to complete the given sentences with appropriate words

Q: How many grams of Nitrogen gas are found in 22.4 L of Nitrogen gas? Group of answer choices 14 g 28…

A: we have to calculate grams of nitrogen gas

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Q: Sample 15 ppm calcium 2 10 ppm calcium and 10ppm phosphate 3 5ppm Ca, 10ppm phosphate and 1%…

A: A question based on absorption that is to be accomplished.

Q: A0.1 M solution of which salt is the most basic? O NACIO NaHCO. NaNO₂ O NaHSO4

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Q: Cytosine is a pyrimidine base component of DNA and RNA.

A: To solve this problem we have to draw the structure of cytosine .

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Q: Propose an efficient synthesis for the following transformation: H The transformation above can be…

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Q: For each codon, provide the anticodon and the three-letter abbreviation of the amino acid for which…

A: Here we are required to find the anticodon and amino acid it codes for given codon

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A: Here we are required to find the limiting reagent of the reaction .

Q: Three 300 ml. expandable containers (A, B and C) containing mixtures of nitrogen gas and hydrogen…

A: The balanced chemical equation taking place is: N2(g) + 3H2(g) ⇌ 2 NH3(g)  We have 3 different…

Q: dentify the major product of this reaction: eq. H H. H * .. OH 0 NaOH -H2O

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Q: (a) Mass of Magnesium metal used (b) Volume of H₂ gas collected (c) Temperature of H₂ gas collected…

A: We are given the volume, temperature and pressure data for the formation of H2(g) and we have to…

Q: QUESTION 1 How many grams NH4Cl and how many milliliters 2.5 M NaOH should be added to 300 mL water…

A: Using Henderson hasselbalch equation we can figure out the grams of NH4Cl required.

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.