a) If the mass of a sample of water is 16.7655g at 25°C, what is the real volume of the sample? b)If you were pipetting 17.0 mL, what is the percent error in the pipet?

Q: A 1.47 g sample of CO2 is contained in a 708 mL flask at 24.9 °C. What is the pressure of the gas?…

A: Given -> Weight of CO2 = 1.47 gm Volume (V) = 708 ml = 0.708 L (1L = 1000ml) T = 24.9°C = 24.9 +…

Q: Consider the cobalt-chloride ion equilibrium shown. Co(H,O)%*(aq)+4C1-(aq) = CoCl (aq) +6H,O) blue…

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Q: B. Name the following organic compounds: 11.) 12. 13. 14 Br. Br 15.) CI Br CI

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Q: A steel cylinder containing 25 kg of CCl₂ F2 in the form of liquid and vapor is set outdoors on a…

A: Answer: CCl2F2 is a chloro-fluoro carbon and a volatile liquid, its vapor pressure varies…

Q: 2. The [OH-] of sauerkraut is measured to be 3.33 x 10-¹¹M. a. Is the sauerkraut acidic, basic, or…

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Q: 8. Tell what is wrong with each of the following electron configurations: (a) 1s² 2s²2p8 (b) 1s² 2s…

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Q: Complete the following statements. You may find the flowchart in section 1.2 of your textbook…

A: Let's understand some terms before answering:- Mixture:- Two or more substance are added to make…

Q: a. What is the percent (by mass) sodium in sodium nitrite? b. A particular brand of beef jerky…

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Q: the following molecule, how many atoms are in the sp2 hybridization state?   A)  10         B)  4…

A: A carbon can form a maximum of 4 bonds. An sp2 carbon can form 3 sigma bonds and 1 pi bond.

Q: why do atoms repel each other? Explain the process

A: •Atom contains electron(negative charge) around the nucleus and proton(positive charge) inside the…

Q: 3. a. If "Epsom salt", MgSO4. xH₂O, is heated to 250 ° C, all the water of hydration is lost. Write…

A: Epsom salt = MgSO4. xH2O xH2O is the water of crystallization attached physically to the salt.   a)…

Q: What volume of hydrogen gas is produced when 45.3 g of iron reacts completely according to the…

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Q: 1. Hg(OAc)2, EtOH 2. NaBH4, NaOH

A: Alkene on reaction with mercuric acetate followed by reaction with NaBH4 gives alcohol and the OH…

Q: State the relationship between mass and volume of a solution. Is the mass-volume ratio dependent on…

A: Given

Q: Write the balanced nuclear decay equation for bismuth-210 undergoing alpha decay, and then write the…

A: Given,  The alpha decay equation of bismith - 210 is: The beta decay equation of sulfur-35 is:

Q: Draw what happens as the approaching atoms begin to repel, slow down, and ultimately move apart.

A: The following picture given in next step is molecular level picture which illustrates that what…

Q: (4) Carbon allotropes have the same properties although they have different structure as they Entein…

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Q: Questions 3 and 4 below refer to the image above. A. B. H₂C CH₂ C. H 1 H-C-H H H-C-H H-C-H H-CH…

A: Concept based on the general chemistry of solubility of given compounds in water.

Q: In an experiment to determine its enthalpy of vaporization, liquid etrachloromethane, CCl4, was…

A: Given : CCl4 in an open boiler with heating coil In heating coil , Current , I = 0.933 A…

Q: 4. Write orbital diagrams for the following elements (a) Iron (b) Chlorine

A: we have to draw the orbital diagram for  iron  chlorine

Q: 1) You have 3 moles of cyclohexene (density 0.811 g/mL, MW 82.15 g/mol) and react it with 15 moles…

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Q: Use this diagram to answer the following questions. Suppose a small sample of pure X is held at…

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Q: Two reactions and their equilibrium constants are given. K₁ = 2.21 K₂ = 0.104 Calculate the value of…

A: A reaction can be obtained by the addition or subtraction of two or more different single step…

Q: Which of these two gases has the larger number of molecules? Flask A Flask B

A: Given- Flask A contains H2 gas and flask B contains CO2 gas.           Volume of flask A = volume of…

Q: Chemistry **this is a phosphate buffered saline** what percent of conjugate acid is ionized at this…

A: Given the pH of the phosphate buffered saline = 7.4  A pH of 7.4 is closest to the pKa2 of…

Q: The hydrogen atom has a volume of approximately 6.2 × 10−³¹ m³. What is this volume in each unit?…

A:

Q: stion Completion Status: Relative Abundance 100 90 80 70 60 50 40 30 20 10 0 21 Mass (amu) Consider…

A: In mass spectrometry all positive ions are identified by their m/z values.The height of the peak is…

Q: How many grams of iron are needed to completely consume 46.5 L of chlorine gas according to the…

A: Stoichiometry of reaction

Q: The coarse focus knob should be adjusted when using this Condenser ΟΙΟ O HPO O LPO lens.

A: Coarse focus knob should be adjusted when using this _ lens.

Q: A student titrated a vinegar sample with 0.44M NaOH titrant. A 5.0mL vinegar sample was mixed with…

A: 5.0 mL vinegar sample was mixed with 50 mL of water in a flask and titrated with 0.44 M NaOH…

Q: What is the equilibrium vapor pressure of diethyl ether and ethanol at room temperature…

A: Pressure vs Temperature plot is given for Diethyl ether, ethanol and water.

Q: A laboratory provides the following analysis obtained from a 50 ml sample of water. Ca²+ = 40 mg/L,…

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Q: 4. Fill in the gaps of the following table. Symbol 3+ 59 CO³+ Protons Neutrons Electrons Net charge…

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Q: 1-pentyne FLO 1. NaNH2 2. CH3CH₂CH₂Br lot en tuo ms of y

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Q: Aluminium has a density of 2.70 g/cm³. How many moles of aluminum are in a 13.2 cm³ block of the…

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Q: The Ksp of zinc carbonate, ZnCO3, is 1.46 x 10-10. Calculate the solubility of this compound in g/L.…

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Q: Direction: Bond the following elements by drawing its bonding representation as shown on the first…

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Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

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Q: Draw lewis structure of TeOCI4 IS2C15^2-

A: we have to draw the Lewis structure of the given two compounds

Q: lab sample containing sodium chloride, ammonium chloride and sand. It initially weighs 3.115 grams,…

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Q: What are the assumptions necessary to be made in order to determine the molecular weight of a…

A: The Dumas method is used to determine the molar mass of a volatile liquid. In this method, known…

Q: Spontaneous chemical reactions proceed until they hit equilibrium.  Once the reaction hits…

A: Spontaneous chemical reactions are reactions which takes place without the addition of external…

Q: Give a clear handwritten answer with explanation needed..given below some options in which compound…

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Q: A sample of nitrogen gas occupies a volume of 7.76 L at 63.0°C and 379 torr. If the volume of the…

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Q: Exercise (1) A laser used in eye surgery to fuse detached retinas produces radiation with a…

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Q: Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon…

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Q: Account for unsymmetrical hydrogen bonding

A: To describe unsymmetrical hydrogen bonding

Q: Which of these two gases has the greater average molecular velocity? Flask A Flask B

A: average velocity of gas =8RTπM where  T = temperature in K and M = molar mass of gas. and R =…

Q: Consider a helium atom, He24 , for the below questions. Clearly label your answers for each part. A.…

A: Helium atom has 2 electrons, 2 protons and 2 neutrons The atomic number is 2 and atomic weight is 4.…

Q: The following equation can be used to convert Fahrenheit temperature to Celsius temperature. (F-32)…

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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.