When the calculation (2.31)(4.9795x10^3)(1.9971x10^4) is preformed, how many significant digits should be reported in the final answer?

Q: electrode will be oxidized?.

A: According to the question an Mg/Mg2+ concentration cell is constructed in which both electrodes are…

Q: Sulfur Chlorine What is the name of this atom? Argon Potassium

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Q: How many electrons are in the most common phosphide ion? (Record your two-digit answer) Answer: 12

A: Here, we have to find the number of electrons in the most common phosphide ion.

Q: A solution is prepared by dissolving 27.7 g of urea [(NH₂)₂CO], in 147.0 g of water. Calculate the…

A: Boiling point is the temperature at which substance start converting from liquid to vapour form

Q: After dissolving our impure napthalene in methanol the solution looks red what could have happened

A: Introduction to recrystallization Re-crystallization is a method for removing impurities from solid…

Q: You were calculating the concentration of EDTA (MW 372.24 g/mol; Q = 98.45%). You weighed out 8.6731…

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

Q: 203,450,000g of water in a lake is contaminated with 326g of anthrax. How many ppm? A. 1.60 ppm B.…

A: PPM is Parts Per Million. 1 PPM is defined as the concentration of the solution, containing 1g of…

Q: 1) Mg, EtO a grignard reagent? If so, how does it become a grignard reagent?

A: Alkyl Magensium halide RMgX are referred to as Grignard reagent. These can be prepared by the…

Q: A process for the production of 1,3-butadiene results from the catalytic dehydrogenation at…

A: Given :  ∆H248K =109780 J/mol And the given reaction is : C4H8 (g)→C2H6(g) + H2 (g)

Q: How many liters is 57.4 mL?

A: To convert 57.4mL into L(litres)

Q: NMR Spectra 내 4.0 3.5 4 PPPM 3.0 2.5 도 2.0 포 BH. 1.0 0.5 PPH

A:

Q: . Count the number of carbon and hydrogen atoms in each of the following {*AY.s (d) (b) (c) (e)

A:

Q: piece of an unknown metal has a volume of 15.4 mL and a mass of 333.8 grams. The density of the…

A: Given -> Volume (V1)= 15.4 ml Mass(M1)= 333.8 gm Mass (M2) = 69.7 gm

Q: The first atomic explosion was detonated in the desert north of Alamogordo, New Mexico, on July 16,…

A:

Q: What volume (in L) of concentrated potassium hydroxide solution (21.5 mol/L) is required to prepare…

A: This is a dilution problem. Here the concentration of concentrated KOH solution is given. We have to…

Q: Love the following information to answer the next question. The base lithium propandate…

A: Given → Concentration of lithium propanoate = 0.25 mol/L

Q: llustrate the structures of simple cubic (SC), body centered-cubic (BCC) and face entered-cubic…

A:

Q: A salt solution sits in an open beaker. Assuming constant temperature and pressure, the vapor…

A: Given solution is a salt solution.  It may be any salt and mainly maximum salts are solid and non…

Q: The phase change from gas state to a liquid is called a) boiling b) sublimation Oc) vaporization d)…

A:

Q: Which of the following concentration measures will change in value as the temperature of a solution…

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Q: Ritonavir

A: Functional group: It is defined as the  groups of atoms in a compound, such as the hydroxyl group in…

Q: Calculate the enthalpy change for the following reaction, __C₂H4(9) + F₂(g) → _CF4(9) + HF(g) using…

A: Recall the given reaction,                   _ C2H4 g  +  _ F2 g  →  _ CF4 g  +  _ HF g∆Hf° C2H4 =…

Q: Pressure (atm). 73.0 5.11 Solid -78.5 -56.4 Liquid Temperature 3 Ruid Phase Diagram for Unknown…

A: During boiling, a liquid converts to gas.  During sublimation, a solid convert to gas. During…

Q: If we have 42.14L of O2 gas at STP, how many moles of this gas do we have?

A: Given,  The volume of O2 gas = 42.14 L The number of moles of O2 present at STP in this volume is:

Q: A 2.2964 g sample of Na₂ CrO4 (MW = 161.97 g/mol) is dissolved in 100.0 mL of water. Assume the…

A: According to the question we have a solution of sodium chromate (Na2CrO4) and water (H2O) where Mass…

Q: Consider the following reaction: CaO(s) + CO₂(g) → CaCO3(s) The data found below are the results…

A: Given reaction: CaO(s) + CO2(g) → CaCO3(s) We have to find the concentration of CO2 during trial 3…

Q: At a certain concentration of reactants the rate of appearance of water in the following reaction is…

A: Given -> 4NH3 + 7O2 ----> 4NO2 + 6H2O Rate of appearance of water = 0.73 M/s

Q: Some commercial drain cleaners use a mixture of sodium hydroxide and aluminum powder. When the solid…

A:

Q: Part A Spell out the IUPAC name of the compound. Submit Request Answer Part B Br 1 CI-CH₂-CH-CH₂-Br…

A:

Q: Provide the correct IUPAC name for the compound shown here. H ند CH3 H₂C H .CH3 CH3

A: we have to name the given structure

Q: A balloon has a pressure of 137 kPa and a volume of 93.0 L. If the temperature is held constant,…

A:

Q: 50 mL of a wastewater sample needs 21 mL of 0.1 M hydrochloric acid, HCI (MW = 36.5) to reduce its…

A: Given,  Volume of wastewater in mL = 50 mL Molarity of HCl = 0.1 M Volume of HCl in mL = 21 mL…

Q: B.3 One of the sterilisation methods that kill spores, bacteria and viruses is to treat materials…

A: The boiling point of water boils is 100 °C at 1 atm pressure. ΔHvap-40.6 kJ/mol We have to find out…

Q: (4) CuSO4 is electrolyzed for 10 minutes with 5.1 A current, calculate mass (g) of Cu deposited? B)…

A: The Faraday's first law of electrolysis states that, the amount of compound deposited at electrode…

Q: An aqueous antifreeze solution is 37.4% ethylene glycol (C₂H5O₂) by mass. The density of the…

A:

Q: If 1.951 g BaCl2 · nH2O yields 1.864 g of anhydrous BaSO4 after treatment with sulfuric acid,…

A: Given, mass of BaCl2·nH2O = 1.951 g n = ? mass of anhydrous BaSO4 = 1.864 g  Note: molar mass of…

Q: puzzle cube has a volume of 187 mL what is the volume of the cube in in^3

A: Since, 1cm3= 1ml 1 inch = 2.54 cm then,

Q: H3C- d) H3C CH3 CH3 + + H2O H₂O ОН H₂O*

A:

Q: Using the modified Arrhenius definition, identify which of the following entities can be classified…

A: Modified Arrhenius definition - Acids are those substances that produce H+ ions in water, forming…

Q: A vibrational energy level of of a diatomic molecule AB has an energy of 1.25x10-19 J, what is its…

A: Given -> Vibrational energy (En) = 1.25 × 10-19 joule Zero point energy (E0) = 2.5 × 10-20 joule…

Q: The interfacial energy γoil-water of an oil – water interface at 25 oC is 53 mJ/m2. The surface…

A: The ability of one liquid to spread over the other liquid is known using spreading coefficient. For…

Q: a: Sketch within a cubic unit cell the following crystallographic directions: [121], [201], [2 1 3),…

A: The crystallographic direction within a cubic unit call can draw by converting the Miller indices…

Q: The ammonia molecule NH3 has vibrational modes. 6 4 7 12

A: In a molecule the number of vibrational modes can be determined by using the following formula:

Q: In class, we learned why chromium (Cr) has a 4s13d5 electronic configuration instead of 4s2 3d4. By…

A: Electronic configuration is defined as arrangement of electrons in shell, subshell and orbitals.

Q: Complete and balance the following chemical equation, which occurs in acidic solution: Fe2+ (aq) +…

A: In order to balance the given reaction involves the question, it is quite necessary to determine the…

Q: Calculate the moles of ammonia present in a 7.040 g sample of ammonia, which has a molar mass of…

A: Given, mass of ammonia = 7.040g  Molar mass of ammonia = 17.030gmol-1  Moles of ammonia = ?  Note :…

Q: A rigid vessel is filled to one-half its volume with liquid methane at its normal boiling point (111…

A:

Q: answer of the following sentences: (1) The electrolytic conductivity of a 0.1 M solution of acetic…

A: Molar conductivity is defined as the conductance of a solution containing one mole of the…

Q: What was an example of a case where you used the scientific method to solve a real-life issue?

A: Problem: Do plants need food to grow? Hypothesis: If the plant is given more food it will grow…

Q: 3. A student ran the following reaction in the laboratory at 657 K 2 NH3 (g) ( N₂ (g) + 3 H₂(g) When…

A: In the given reaction ammonia decompose into nitrogen and hydrogen. The balanced chemical reaction…

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.