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In: Chemistry

Question 4 Which of the following is a base ? A. HCl B. H2CO3 C. Ca(OH)2...

Question 4

  1. Which of the following is a base ?

    A.

    HCl

    B.

    H2CO3

    C.

    Ca(OH)2

    D.

    None of the above.

Question 5

  1. A sample of Neon gas of mass 0.0615 moles occupies a volume of 0.639 L at 27oC and 1.00 atm pressure . Calculate the value of a gas constant, R.

    A.

    0.385 atm. L / mol. K

    B.

    0.0346 atm. L / mol.K

    C.

    346 atm . L / mol. K

    D.

    none of the above.

Question 7

  1. How many significant figures are in the number 0.003405 ?

    A.

    7

    B.

    6

    C.

    5

    D.

    4

Question 11

  1. Which of the following is an ester functional group ?

    A.

    CH3- CH2-O-CH2-CH3

    B.

    CH3- CH2-COO-CH2-CH3

    C.

    CH3- CH2-CO-NH2

    D.

    CH3- CH2-COOH

Question 6

  1. The following reaction is an example of ____________________:

    HNO3(aq) + H2O(l) -----> H3O+(aq) + NO3−(aq)

    A.

    non electrolyte

    B.

    weak electropyte

    C.

    strong electrolyte

    D.

    None of the above.

Question 3

  1. Which of the following is/are ionic compound ?

    A.

    Fe2O3

    B.

    NaCl

    C.

    A and B

    D.

    N2O5

Solutions

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