Did lead (Pb) on planet Earth: remain unchanged in abundance over time о а. O b. decrease in abundance over time increase in abundance over time O C.

Q: Which is not named correctly ? A. CuSO4 copper(II) sulfate B. CaF2 calcium fluoride C. Na3PO4 sodium…

A:

Q: Part I: Name the following organic compounds. 1. CHg 6l4 OH OH Authored by: Sensei Wilmark Palacios…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: If a particular ore contains 55.9% calcium phosphate, what minimum mass of the ore must be processed…

A: Molar mass of calcium phosphate is sum of atomic masses of all atoms present in it.

Q: What is the overall percent by mass of the Cr in the Cr-Zn alloy if the following alloys were to be…

A: Given We know about the mass percentage  given date is  A.100gram of 15% Cr in the Cr-Zn alloy  B.…

Q: Name the compound: SbK(C H O),

A: While naming a compound, in general, the name of the cation is written first followed by the name of…

Q: 4. + N' N- 1) CH3I (excess) 2) Ag20 3) A H2N 1) NaNO2, H20, HCI CCH2CH3 2) HBF4 3) A ZI 5. 6.

A:

Q: bromide carbcnate | chiorate chioride chromate nitrate phosphate sulfate sulfide co,2- Cro,2- NO,…

A: In given table, we will fill only first three rows according to the guidelines of Bartleby. To write…

Q: Name the following: CI, CIO, CIO, CIO ambined with other elements) I, (Br,I,N,CI,H,O,F.) NAMU

A: ate ----> ic  ite ----> ous  ide -----> hydro -ic  We have to name the following acid given…

Q: The ratio of the mass of Oto the mass of Nin N2O3is 12:7. Another binary compound of nitrogen has a…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7Mass of O in N2O3 = 3x16 amu…

Q: 29) Which one of these compounds is an ionic compound? B) NO2 A) C6H1206 C) Li,O D) CH3OH E) P4010…

A: 29) Covalent compounds are those in which covalent bond is formed. Covalent bond is formed by mutual…

Q: 3.122 The natural abundances of the two stable isotopes ofhydrogen (hydrogen and deuterium) are…

A: Density of water =1 g/mL Volume of water = 400 mL Density =MassVolumeMass = Density× Volume=1…

Q: What 19K, 12 Mg, 13Al elements give with go The formulas of the compounds which are- well shown…

A: potasium is 1st A group member which is stable in +1 oxidation state Mg and Al are 2nd A and 3rd A…

Q: M is a Group I metal. 0.5 mol of the metal sulphate weighs 71.05 g. What is the relative atomic mass…

A: The weight in gram of the number of atoms of an element present in 12.00 g of carbon-12 is relative…

Q: 3. Name the following 1onic compounds. (a) Cal; (b) K;P (c) AIF; (d) Ag,S (e) Cs,CrO4

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Q: How many grams of magnesium are required to produce 4.380 kg of Si? (At mass: Mg324.31: Si-28.09)…

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Q: Table 1: Molar masses of common rock forming elements Atomic Mass (amu) 28.09 Element Oxide (1)…

A: We can identify the valency of oxide are as follows Suppose the oxide formula is = MaOb(=2) Here,…

Q: Fe03(s) Co(g) Fe(1) CO2(g) - H2SO4 Pb(OH)4 > Pb(SO4)2 H20 + +

A: A chemical equation is written using the symbolic representation of chemical reaction in which the…

Q: (1) Li(CH;CH,),Cu (2) H;O* Br Pd(OAc)2 CN (b) PPH3, EtzN H,NNH, (c) КОн Li, NH3 (d) (CH3);COH Br…

A: “Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: m/z values for a given elemental composition are calculated a. using the average atomic masses…

A: Mass spectrometry is branch of chemistry in which we deal with mass to charge ratio.

Q: 1) Mno, + NO,→ Mn2+ + NO,- 2) Mno, + VO2+ → Mn2+ + V(OH),* 3) l2 + H,S → - + Sg 3+

A: 1) MnO4- + NO2- ----> Mn2+ + NO3-    The half reactions are -  MnO4- ----> Mn2+  (reduction…

Q: Strontium nitrate consist of 72.8 mmol. How many pg of substance is this? The answer must be 1.54 x…

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Q: What is the alumina content in weight % of the garnet with Al as the only 3+ cation has Mg2.508…

A:

Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09)…

A: Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is…

Q: (a) CaCO,(s)²Ca²*(aq) + CO,²-(aq) (b) Mg,(PO,);(9) =3 Mg²"(aq) + 2 PO,' (aq) (c) CO(g) +…

A:

Q: Mass number 63 29CU+2 15P-3 31 Cu: 34; P: 16 OA. Cu: 65; P: 28 В. Cu: 61; P: 34 OC. Cu: 31; P: 12 D.…

A: So we’ve to calculate the total number of electron present in the above mentioned ions.

Q: What volume of 5.0M NaCl is needed to provide10.0 grams NaCl?  Atomic weights: Na = 22.99  Cl =…

A: Molarity (M) : Number of moles of solute present in 1 litre solution is called molarity (M)…

Q: 18. A compound with molecular mass of 74.1 g/mol is found tO contain 64.8% carbon, 13.5% hydrogen,…

A:

Q: Calculate the percentege mass in KMnO4. [Relative Atomic masses of: K= 39, Mn= 55 and O= 16]

A: Consider the given relative mass of the atoms present in KMnO4 is as follows; K = 39, Mn = 55 and O…

Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed in…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three sub -…

Q: A certain inorganic acid has a pKa of 9.2. What is its Ka? Enter your answer in scientific notation.…

A: Given information,        Inorganic acid has a pKa of 9.2

Q: f. CO2H 1. CICOCOCI, NE13; 2. FeCl,, THF/NMP; 3. MgCI H3C, `CH3

A: The carboxylic acid functional group is depicted as R-COOH, where R can be an alkyl or aryl group.…

Q: A metal ion with 2+ charge has 23 electrons and forms a compound with a halogen ion that contains 17…

A: SOLUTION: Step 1: A metal gains positive charge by the loss of electrons. A metal ion with 2+ charge…

Q: Please help answer this

A:

Q: How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; Si=28.09)…

A:

Q: What mass of cerussite (PbCO3), would contain 35.0 grams of lead?

A:

Q: Zn + HNO, Zn(NO3)2 + NHNO, + H,O KI + HSO, + MNO2 K2SO4 + H2O + b + MNSO. PbS + 02 PbO + SO2

A:

Q: Br 1.Mg, Etz0 2. СO2 3. Но он OH Он A B D

A:

Q: 17. Saccharin, an artificial sweetener that is 3000 times sweeter than sucrose, is composed of…

A: 17. Given information,    45.90% carbon, 2.73% hydrogen, 26.23% oxygen 7.65% nitrogen, and 17.49%…

Q: A binary compound of oxygen and an unknown element, X, has the formula X20 and is 53.55 mass %…

A: Ionic or covalent : An ionic bond is formed from one atom to another atom and forms attaches through…

Q: 1. Name each of the following compounds: a) Pbl2 b) NiS c) Fe(OH)2 d) Cr2(CO3)3 e) Al(OH), f) KNO,…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: 4. C6H12 + 9 02→ 6 CO2 + 6 H2O 5. 03 O+02 6. Pb + Fe(SO4)→ Pb(ŠO4) + Fe

A: the solution is as follows:

Q: Common lons and Polyatun CH3COU for C2H3O2) Name Hvpochlorite ion Be? halt No 1Be - NaNo3 Sodum…

A:

Q: Potassium ferric alum has the formula: KFe(SO,)2 .XH2O. A sample of 1.26 g of this alum was heated…

A: Answer

Q: अ @मांयंपल H is Pa=4.81 Pe=4'05 bak , 6= 4.63ba stendertonange in gibas fee enesy च अंट ? bak, P=451…

A:

Q: 10) A patient is to be given 2 litres of 0.9% sodium chloride via intravenous infusion over a 24…

A: From given concentration of sodium chloride we can calculate the millimoles of sodium.

Q: To what weight of AICI3 would 0.280 g of AgCl correspond? Atomic weights for Ag = 108, Cl = 35, Al =…

A: Molecular weight of AgCl = (108 + 35 ) = 143 g/mol  So, 143 g AgCl = 1 mol AgCl  1 g AgCl = 1/143 =…

Q: 15. What is the formula for a compound formed from aluminum and oxygen? a. Al302 b. Al204 C. Al303…

A:

Q: Fe(OH)3 + H+ → Ce(OH)4 + H202 → Ce3+ + Na,HP04→ Fe3+ + Na,HP0, FEPO, + H+ → Fe3+ + K,Fe(CN)6 → Ce3+…

A: 1) Fe(OH)3 + H+ → The balanced chemical reaction for the given reaction is, Fe(OH)3 + 3H+ → Fe3+ +…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.