A total of 0.03295kg of zinc was placed into a graduated cylinder containing 50.0mL of water. By method of displacement, the water level rose to 54.6mL. Determine the density (g/mL) of the zinc.

Q: Phosphorus-32 is radioactive and has a half life of 14.3 days. Calculate the activity of a 6.3 mg…

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Q: which transformation is produce strong base In clonixin. Select and explain!

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Q: Make sure you can identify the location of the double bond in the following alkenes by properly…

A: Numbering is done in a way that alkene gets minimum possible number as per IUPAC rules.  Alkene…

Q: for each of the 2 centres, label them S or R

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Q: ny moles

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Q: If Gas X has a molar mass that is twice that of Gas Y, Gas X will have a rate of effusion that is…

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Q: Which answer applies to the following statement? Some alkene addition reactions involve a concerted…

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Q: Use this condensed chemical structure to complete the tabl The condensed chemical struct "CH. CH.…

A: Given :-  Condensed structural formula of ethylene :-  CH2=CH2  To determine :-  Total C-C bonds…

Q: The reaction of a secondary amine and aldehyde forms which of the following? O Amide O Imine Acetal…

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Q: X represents a nonmetal atom with an atomic mass of 107.91 amu.  Calculate the number of grams of…

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Q: Consider the initial conditions of a gas: Variable Initial Value T 400. K V 250. L P 3.30 atm…

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Q: Part A Rank these systems in order of decreasing entropy. Rank from highest to lowest entropy. To…

A: Part A: Out of all the given systems, CCl4 has the most no. of molecules. Nitrogen gas exists as N2…

Q: Question 17 When element X forms an ion, the ion has a 3- charge and is isoelectronic with Ar.…

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Q: Calculate the entropy of the mixing for 2 ideal gases if gibbs energy of mixing equals -6.9 kJ at…

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Q: How many bonds could each of the following chelating ligands form with a metal ion? (a)…

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Q: Answer the questions in the table below about this molecule: OH What is this molecule's chemical…

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Q: Describe the preparation of a 250 mL of 5 M aqueous HCl solution from a 35% (v/v) concentrated…

A: Given: Concentration of final solution = 5 M Volume of final solution = 250 mL = 0.250 L…

Q: Choose the correct reagents and reaction sequence for the following transformation. ? CH3 Br CH3…

A: Grignard reagent is hard nucleophile... Grignard reagent with acidic proton gives acid base…

Q: HBr (excess)

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Q: An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially,…

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Q: In the laboratory you are given the task of separating Ca2+ and Zn2+ ions in aqueous solution. For…

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Q: Number of atoms of Carbon in 7 moles of C4H10 are: O 42.15x10^23 O 24.09x10^23 O 168.62x10^23 O…

A: Number of atoms of carbon in 7 moles of C4H10 - - >  Carbon atoms = 4 Total number of carbon…

Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 x 10 years. Suppose…

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Q: Which of the following molecules will undergo decarboxylation with mild heating?

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Q: Could you please name these

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Q: Use the given molar solubilities in pure water to calculate Ksp for each compound. MXMX; molar…

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Q: Round each number to three significant figures. 25,401 1,248,486 0.001265982…

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Q: The overall charge on the polyatomic "dichromate" ion (Cr207) is -2. What is the oxidation number of…

A: Given: The overall charge on the dichromate ion i.e. Cr2O72- is -2.

Q: Your an An electron is accelerated from rest through a potential difference that has a magnitude of…

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Q: [H*] = 4.78 x 10-² M

A: Calculate the pH of each of the following solutions from the information given.

Q: HCI (b)

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Q: (59,63) A compound with a molecular mass of 168 g/mol has an enthalpy of vaporization of 56.8…

A: Given: Vapour pressure at 35 oC = 455 torr. And ΔHvap = 56.8 KJ/mol = 56800 J/mol.

Q: (d) porphine, often used in supermolecular chemistry as well as catalysis; biologically, porphine is…

A: we need to find number of bonds formed by the ligand porphine with metal ion

Q: The Ksp for CsClO4 is 0.00757. What is the molar solubility for CsClO4 in M?

A: Given-> Ksp = 0.00757

Q: Select the product of the following reaction. 1. NABH4 H. HO, 2. H30* Но HO.

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Q: The pl values at both pHs 7.4 and 8.6 are the same. Lab results are routinely generated at pH 8.6.…

A: Isoelectric point

Q: II. Complete the following nuclear reactions with atoms and particles on the box below and identify…

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Q: The gas modeled in the graph above has a volume of 50 cubic meters when the pressure is 100 kPa.…

A: The graph given is, Given: Pressure = 100 KPa and volume = 50 m3.

Q: Draw the SN2 mechanism.

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Q: Rank the following acids from least to most acidic. (Start with the least acidic as 1) Br Br. HO Br

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Q: Aldehydes and ketones are A. polar molecules capable of forming hydrogen bond among themselves. B.…

A: Both aldehydes and ketones are polar molecules due to the presence of carbon-oxygen double bonds. In…

Q: Perform a t-test comparing COMP250 to COMP100 and COMP250 to COMP20. A p value when p0.05 is not…

A: COMP250 COMP100 COMP20 n=1 87.77 81.73 65.8   n=2 81.71 50.54 63.7   n=3 86.64 55.38 59.4…

Q: A sample of ethanol (C2H6O) contain 3.024 g of hydrogen. How many moles of carbon in the sample?…

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Q: The maximum amount of calcium carbonate that will dissolve in a 0.127 M ammonium carbonate solution…

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Q: 2. IN Question 6 Metal Specific Heat (J/g°C) Calcium 0.643 Iron 0.449 Silver 0.235 Gold 0.129 After…

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Q: Phosphorus (P4) and oxygen react to produce diphosphorus pentoxide.  If the percentage yield of the…

A: Phosphorus reacts with the oxygen to form diphosphorus pentoxide. The equation for the balanced…

Q: Describe the preparation of a 250 mL of 5 M aqueous HCI solution from a 35% (v/v) concentrated…

A: Given: Concentration of final solution = 5 M Volume of final solution = 250 mL = 0.250 L…

Q: When vinegar and baking soda are kixed together in a aqueous, the solution becomes colder as the…

A: The solution is given below -

Q: 1- Explain another methods by which cytotoxicity is measured ?

A: Cytotoxicity can be measured by a method in which through asessing cell viability by  using the…

Q: Consider the insoluble compound nickel(II) carbonate , NiCO3 . The nickel ion also forms a complex…

A: answer of the question is given below

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.