Please help me.. *A 5.0 g coal sample is given for analysis. After subjecting it to hot air oven at 107 oC for 1 hour, it lost 15% of its weight. Calculate the amount of moisture in the sample * a. 0.15 g b. 0.75 g c. 0.30 g d. None of the above

Q: a. 1.20 V. b. 1.21 V. c. 0.35 V - the correct answer is c., I just don't how to get to the answer.…

A: You know the reaction and reduction potentials of each half-cell reaction.If you make a cell, the…

Q: Consider the reaction below: Pb(NO3)2(aq)  + 2NH4I(aq) --> PbI2(s) + 2NH4NO3 25 g of 5.0% NH4I (MW…

A:

Q: Complèté the stolchlometry table using the density (g/mL) vol. (mL) molecular reagent mass (g)…

A:

Q: Complete the stoichiometry table using the starting values provided. density (g/mL) molecular vol.…

A:

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: Given; N2 (g) + 3 H2 (g)  ➝ 2 NH3 (g) At STP, Volume of nitrogen gas (N2) reacts = 1580 L Volume of…

Q: Compute for the composition, in atom percent, of an alloy that consists of 92.5 wt% Ag and 7.5 wt%…

A: Given data : Wt% Ag = 92.5 Wt% Cu = 7.5

Q: If 0.251 grams of MgO were added to 24.8 mL of HCl (density = 1g/mL), use the graph collected below…

A: According to the given graph,  Initial temperature of HCl solution, Ti = 19.41 oC. Final temperature…

Q: 60. Write balanced equations for the complete combustion of each of the following substances. a.…

A: Combustion reactions involve the burning of a substance in the presence of oxygen thus hydrocarbon…

Q: Carbon disulfide is an important industrial solvent. It is prepared by the reaction of coke (carbon)…

A: To solve this problem we have to calculate the number of moles of carbon .

Q: A coal sample having the following composition: C = 80%, H = 4%, O = 3%, S = 2%, N = 3%, ash = 5%…

A: Here, we are provided with 1 kg of a coal which consists of 80% of carbon, 4% of hydrogen, 3% of…

Q: separation

A: According to the question, we need to determine how to purify the black copper for the wire using…

Q: Gypsum (plaster of Paris : CaSO,. 2H,0) is produced by the reaction of calcium carbonate and…

A: Gypsum is prepared by the reaction between calcium carbonate and sulfuric acid. CaCO3 + H2SO4…

Q: Part A MISSED THIS? Watch IWE 9.3; Read Section 9.4. You can click on the Review link to access the…

A:

Q: Given a creation A₂ (g) + B₂ (g) = 2AB (g) ke for this rection 116.4 and the intestul concentration…

A: The answer to the following question is-

Q: NaCI (20.0 g) and AgNO3 (20.0 g) are dissolved in water and allowed to react (Reaction 2). Answer…

A: Since you posted questions with multiple subparts, we answered the first three questions      We…

Q: When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the…

A: A superconductor is a substance that conducts electricity without resistance when it becomes colder…

Q: You have the following; reagents solvents, substances and equipment; Water, ice, Phenylethylbromide,…

A:

Q: 1. Standardization of approximately 0.025 M KMNO4 Data Table Experimental Vol of vol of KMNO4 (ml)…

A: The balanced ionic reaction between C2O42- and MnO4- is as follows: According to the balanced…

Q: Product characterization: 0.91 g of the crude product 0.77 g of the final product M.p. (crude):…

A: Given: Mass of Crude product = 0.77 g Mass of Final product = 0.91 g

Q: When temperature is increased by 1°c, the mobility of ions rise by........ In conductometry…

A: Solution:1 As the temperature increases the mobility of ions increases as an increase in…

Q: 4. A sample containing a mixture of gm / mole (NaCI 58.44) and NaySO with a weight of 0.9532 gm…

A:

Q: Q4) What is the maximum mass of K3[Al(C204)3] across all samples? a. 0.765 b. 0.833 c. 0.921 d.…

A: Balanced equation between KMnO4 and K3[Al(C2O4)3 12KMnO4 +10K3[Al(C2O4)3 + 48H2SO4     →  5Al2(SO4)3…

Q: The fat in a 1.821 g sample of potato chips is extracted with supercritical CO2. After extraction,…

A:

Q: Given the reaction for the preparation of ferrous sultate heptahydrate below Fe H,S0, + 7H,0 ->…

A:

Q: What mass of AgI can be produced from a 0.512-g sample that assays 20.1% All3? Precipitates used in…

A: Giventhe mass of sample = 0.512 gThe mass of AlI3 = 0.512g×20.1/100                            =…

Q: 1. Balance the chemical reaction for combustion of hexane (C6H₁4) with standard air at equivalence…

A: The balanced chemical equation for the combustion of hexane (C6H14) with standard air: C6H14 +…

Q: B. Calculate how many liters of CO2 are produced 1. For 1.25g sodium bicarbonate 2. For 2.8g sodium…

A: • This is quantitative analysis, in which first of all we can calculate the m-mol of acetic acid…

Q: 100.0 g of a ground mineral sample consisting of a mixture of MGCO3 (magnesite) and BaCO3…

A:

Q: 会 云 + 1 1 < co T LL Car note CAU EMAIL CANVAS Pirate Ship MYJSC Vacančies | A... Birmingham Néw…

A: a) I2(aq) + Cl-(aq) ---&gt;  The balanced chemical equation for the given reaction is, I2(aq) +…

Q: (h) HCN + O2- N2 + CO2 + H20 (i) B5H9 + O2- B2O3 + H20

A:

Q: Calculate AHrn for Ca(s) + % Oz(g) + Co2 (g) → CaCO:(s) given the following set of reactions: Ca(s)…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What volume of groundwater containing 2 mg l-1 dissolved oxygen (DO) would be required to oxidize 23…

A:

Q: A516.7 mg sample containing a mixture of K2SO, and (NH4)2S0, was dissolved in water and treated with…

A: The mass of the mixture [K2SO4+(NH4)2SO4] = 516.7 mg The reaction can be given as follows:…

Q: 3I- + OCl- + 2H+ ----> I3- + Cl- + H2 : A 25.00 ml sample of liquid bleach was diluted to 1000 ml in…

A: welcome to bartleby, answer to the question is provided below.

Q: QUESTION 5 The gas NO reacts in with oxygen and forms nitrogen dioxide. This gas, in turn, reacts…

A: Balanced chemical equation can be define as the reaction in which number of atoms of all the…

Q: 3. Use the following atomic masses (in g/mol): As = 74.92; O = 16; K = 39.1; Cr = 52; Na = 23; Cl =…

A:

Q: A 100% 7:06 PM Wed Jan 29 ... Unanswered •1 attempt left • Due on Jan 30 What is the boiling point…

A: Given that molality is 2.065 0.35 m. Elevation in boiling point is determined from the following…

Q: Suppose you have a soil that is made up of 10% organic matter with CEC = 200 cmol/kg, 40% kaolinite…

A: Given: A soil with- 10% organic matter with CEC = 200 cmol/kg 40% kaolinite with CEC = 10 cmol/kg…

Q: A (3.6500 g) of impure ammonium aluminium sulfate (NH4Al(SO4)2)) was treated with ammonia (NH3(aq))…

A: Given: Mass of sample = 3.6500 g. Mass of Al2O3 formed = 0.4935 g.

Q: 1. Copper is found as the mineral covellite (CuS). The first step in extracting the copper is to…

A: THE HALF REACTION METHOD.                  OR THE ION – ELECTRON METHOD : In general, the…

Q: 1.5g sample contains sulfur S (aw=32) has been dissolved. The sulfur is precipitated as BaSO4 (mw =…

A: First we have to calculate the weight of sufur in the precipitate in BaSO4 then we can find…

Q: Percent Ca in unknown

A: In order to determine % Ca in unknown, we must first determine the amount of Ca in each ppt.