Question 7 Which of the following statements is correct concerning common table

Question

Question 7

Which of the following statements is correct concerning common table sugar, C12H22O11?

The total number of hydrogen atoms present in one molecule is 22.

Question 8

An atom of an element has a mass of 1.0555 x 10-22 grams. What is the atomic mass of the element?

200.59 amu

Question 9

Which of the following is the best notation for the bonding in the formula unit NaF?

none of these

Question 10

Which of the following pairs is incorrectly matched?
formula molecular polarity

Cl2O polar

Question 11

The correct name for the pure, gaseous HI is ________.

hydrogen iodide

Question 12

Which compound is a variable charge binary ionic compound?

LiCl

Full word answers please!

Explanation / Answer

7) all the above

8) 63.54 and the element is copper

9)naf is an ionic bond since f is the first element and more ionic and na is a metal. hence option a

10)Which of the following pairs is incorrectly matched? hcn is mismatched it is polar

  HCN, hydrogen cyanide, is linear. Since C is more electronegative than H we expect a vector pointing from H to C. In addition, N is more electronegative than C (and H) so we would expect a bond vector pointing from C to N. The H-C and C-N vectors add to give a total vector pointing from the H to the N. HCN is polar with the hydrogen end somewhat positive and the nitrogen end somewhat negative.

11)The correct name for the pure, gaseous HI is

mono hydrogen monoiodide

12)Which compound is a variable charge binary ionic compound? chromium (111) oxide is a variable charge binary ionic compound

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