Current Attempt in Progress In one lab, the gas-collecting apparatus used a gas bulb with a volume of 261 mL. How many grams of CACO3(s) need to be heated to prepare enough CO2(g) to fill this bulb to a pressure of 784 torr at a temperature of 23 °C? The equation is: CaCO3(s) → CaO(s) + CO2(g) i g CaCO3 eTextbook and Media

Q: Use the table of standard reduction potentials to select a reducing agent that converts NI2+ to Ni…

A:

Q: Balance the following oxidation-reduction reaction as if it were to occur in a basic solution. I(aq)…

A: Rules of redox reaction in basic medium 1. Redox reaction is divided in oxidation and reduction half…

Q: Which half-reaction correctly uses electrons to balance the charge? 2 H*(aq) + Clo (aq) – Cl"(aq) +…

A: Redox reaction are those in which both oxidation and reduction reaction occurs simultaneously.

Q: A certain liquid X has a normal boiling point of 108.00 C and a boiling point elevation constant A…

A: Boiling point is the temperature at vapour pressure of liquid become equal to atmospheric pressure.

Q: Please check my work on percent composition (chemistry.) 1. Use the Percent of Al, Si, and O to get…

A: In this question, we will determine the Empirical formula of the compound  For, the empirical…

Q: Which statements are true for molecular exclusion chromatography? I            Molecular exclusion…

A: F

Q: 7. Oe.chromium alone QUESTION 21 Which one is a strong electrolyte? O Sugar (molecular formula is…

A: A strong electrolyte dissociates completely into its ions in aqueous solution.  A weak electrolyte…

Q: Specific heat is defined by the amount of heat needed to raise the temperature of 1 gram of a…

A: When a substance is heated its temperature will be increased. Specific heat is a measurement of…

Q: How long will it take to plate out 1.5 g Ni from aqueous Ni²+ with a current of 100.0 A? HOW DO WE…

A: According to the Faraday's first law of electrolysis mass of an element deposited at any electrode…

Q: Which of the following is not a tenet of kinetic molecular theory?    Group of answer choices…

A:

Q: mL of water sample requires 2.95 mL of 0.0112 M Na25

A: According to the question, we need to calculate the oxygen concentration if the titration of 33.0 mL…

Q: According to the First Law of Thermodynamics states: "If two samples of matter, initially at…

A:

Q: aestions: 1. Write the Lewis structure for ammonium ion. Determine electron and molecular geometries

A:

Q: aq) + Clo (aq) – I3 (aq) + Cl (aq) oW DO WE GET THERE? liminate as many H20 molecules as possible.…

A:

Q: What two substances, when mixed, would create a precipitate? Choose two. a) NaC,H,0, (aq) b) NH,OH…

A:

Q: 2. A100.0-mL sample of a saturated solution of PbSO, was evaporated until dry where 24 mg of solid…

A:

Q: What is the IUPAC name of the following compound? CH3CH2CH2C-H

A: In this question, we will name the compound by according to IUPAC rule.  You can see below.

Q: The hydronium ion concentration in an aqueous solution at 25°C is 2.8x1o-2 M. The hydroxide ion…

A:

Q: The following is a table of water vapor pressure in millibar (mbar) vs Temp in oC.  In your own…

A: We are given the vapor pressure of water (in mbar) at different temperature values in increasing…

Q: What is the missing reactant? ? LDA -78°C -CH-C-OCH5 -CH-c-ocHs THF I. M9CI II. IV. II.

A:

Q: Enter electrons as e". Use smallest possible integer coefficients. If a box is not needed, leave it…

A:

Q: A mixture of krypton and methane gases, in a 5.73 L flask at 83 °C, contains 11.1 grams of krypton…

A: Mass of CH4 = 1.52g Mass of Kr = 11.1g Volume = 5.73 L Temperature = 83°C = 356.15 K Total pressure…

Q: Give the IUPAC Name of the following compound.

A: The given compound has alkyne main functional group. And longest parent chain is six membered.

Q: 6. How many different types of electronic transitions for absorption by organic compounds? What are…

A:

Q: An automobile tire has a volume of 11.4 L. Calculate the pressure in the tire in units of psi, if of…

A:

Q: In your own words and in no more than three sentences, briefly discuss the two methods of how AH…

A: ∆H of reaction can be calculated using two methods.

Q: The following reaction is classified as and CHĄ(g) + 202(g) CO2(9) + 2H2O(g) exothermic reaction

A: The correct answer about reaction types is given below

Q: How can a cell consisting of a hydrogen electrode and a negative reduction potential element…

A: Electrode potential are relative values obtained using Standard Hydrogen electrode( which has 0 V…

Q: Its saying its wrong and to use a different tempature scale?

A: To convert the final temperature calculated in kelvin to °C.

Q: Fine particles of metallic iron can be injected underground to remediate pollution of underground…

A: #Part-1: We are given an unbalanced redox reaction which is: Fe(s) + C2HCl3(aq) ---> Fe2+(aq) +…

Q: A chemist prepares a solution of aluminum chloride (AICI,) by measuring out 23. g of aluminum…

A:

Q: Consider a random mixture containing 7.00x10 particles of Na2CO3 and 5.00x10' particles of K2CO3.…

A:

Q: 28 29 30 31 32 33 34 35 36 37 38 39 Sulfur tetrafluoride gas is collected at -6.0 °C in an evacuated…

A:

Q: When the Cu2+ concentration is 2.68x10-4 M, the observed cell potential at 298K for an…

A:

Q: The monomers -OH and HN- NH2 но would react with each other to form a polyester a polycarbonate O a…

A:

Q: H;SO, но Ph Нeat Ph Ph A B C

A: Requirement from question:  FT-IR data  Reaction mechanism:   Compound  FT-IR data C=C…

Q: What is the percent acetic acid in a 50.0 mL sample, which required 45.0 mL of a 0.1466 M NAOH to…

A: Here we have to determine the percentage of acetic acid in a 50 ml sample having density 1.09 g/ml…

Q: निण् कर काटटकेवकांडल) Uम + h जवनं वार मै०र हक हकीर बकवे जैकeYnmodपुकवmाट िळेप) छ०, amrow

A: When conjugate double bond is present electrophilic addition takesplace in two ways . One is…

Q: This is the chemical formula for chromium(III) carbonate: Cr,(CO,); Calculate the mass percent of…

A: ★ Answer :  ★ solution :  The formula of the given compound is  Cr2(CO3)3. To calculate percentage…

Q: The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the…

A:

Q: Draw a monoglycerol of linolenic acid label products and reactants

A:

Q: 26.0 g sample of quartz, which has a specific heat capacity of 0.730 J-g..oC 20.0 °C and a constant…

A:

Q: What is the freezing point when 12.70 g of urea (formula mass = 60.00 g/mol) is dissolved in 199.89…

A:

Q: What is the concentration of a solution that contains 390.0 g of acetic acid, CH3COOH, dissolved in…

A: Here 390 g of acetic acid was dissolved in enough acetone to make 1000 ml of solution.We have to…

Q: of 6 hours. How long willit be until only 6.3 yI0 mg remain Question 1b A patient is given a 0.05 mg…

A:

Q: short explanation about tests for phenols experiment

A: A class of organic compounds that has a hydroxyl group (-OH) directly attached to aromatic…

Q: Is giver oint = 100 °C AHvap(100 °C) = 40.7 kJ/mol heat liquid = 4.18 J/g°C Esure of 1 atm, kJ of…

A: Given, □Hvap = 40.7 kJ/mol Mass of water = 32 g Moles (n) = 32/18 = 1.78 mol

Q: CH3 H- CCH,CH2CCHa CH3 CH;CHCCH3 CH CH3

A:

Q: compound NO3 HNO3 XeF4 SeF4 SO2 PF6

A: we need to draw Lewis structure for given molecules and fill the tables

Q: Balance the chemical equation. Based on the equation, how many grams of chlorine are produced when…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.