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R.R. Jha
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The following are some chemistry questions.All mutiple questions.They

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The following are some chemistry questions.All mutiple questions.They are very easy.But I have no time to do it because I got 4 exams in this week. I hope someone can help me to finish it.
1.All of the following elements are nonmetals except
a. carbon.b. beryllium.c. hydrogen. d. oxygen.
2.Which type of formula provides the most information about a compound?
a. empirical b. molecular c. simplest d. structural e. chemical
3.The name for the compound MgCO3 is _______________. The name for the compound MgCO3 is _______________.
4.Which of the following is a binary compound?
a. H2SO4 b. H2S c. NaOH d. O2 e. HCN
5.Name the following binary compound: Fe2O3.
6.A correct name for Fe(NO3)2 is __________.
a. iron nitrite b. ferrous nitrite c. ferrous nitrate d. ferric nitrite e. ferric nitrate
7.The substance, KClO3, is a strong oxidizer used in explosives, fireworks, and matches. What is its name?
a. potassium chloride b. potassium(I) chlorate c. potassium(I) chlorite d. potassium chlorite e. potassium chlorate
8.Which of the following compounds contains an ionic bond?
a. O2 b. HCl(g) c. SO2 d. NaCl e. CCl4
9.The correct formula for lead(II) sulfite is
a. Pb2SO3 b. LSO4 c. PbSO4 d. PbSO3 e. L2SO4
10.The correct formula for lead(IV) nitrate is
a. Pb(NO3)4 b. Pb4NO3 c. Pb2(NO3)4 d. PbNO3 e. Pb(NO3)2
11.Which of the following elements forms the most ionic bond with chlorine?
a. I b. K c. P d. Ga e. Ar
12.In the Lewis structure for SF6, the central sulfur atom shares __________ electrons.
a. 12 b. 10 c. None of the above, because SF6 is an ionic compound. d. 8 e. 4
13.Choose the compound with the most ionic bond.
a. LiF b. KF c. NaCl d. LiCl e. KCl
14.Using the VSEPR model, the molecular geometry of the central atom in XeF4 is __________.
a. tetrahedral b. seesaw c. square planar d. trigonal bipyramidal e. square pyramidal
15.Draw the Lewis structure for NO2 including any valid resonance structures. Which of the following statements is TRUE?
a. The nitrite ion contains one N-O single bond and one N=O double bond.

b.

c. The nitrite ion contains two N=O double bonds.

d. The nitrite ion contains two N-O single bonds.

e. None of these are true.
16.Predict the geometry and polarity of the CS2 molecule.
a. Linear, polar b. Linear, nonpolar c. Bent, nonpolar d. Tetrahedral, nonpolar e. Bent, polar

17.A molecule containing a central atom with sp2 hybridization has a(n) __________ electron geometry.
a. linear b. trigonal bipyramidal c. trigonal planar d. tetrahedral e. bent

18.Which of the following molecules is non-polar overall?
a. OCl2 b. SF4 c. SF2 d. CCl4 e. H2S
19.What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers?
___ Na + ___ H2O ? ___ NaOH + ___ H2
a. 1 b. 2 c. 3 d. 4 e. 5
20.When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type?

Pb(NO3)2 + K2CO3 PbCO3 + KNO3

a. 2 b. 3 c. 4 d. 1 e. 5

21.Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: CH3OH (methanol).

22.Identify the major ionic species present in an aqueous solution of K2SO4.

a. 2K+, SO42– b. K2+, S6+, 4O2– c. K2+, S6+, O48– d. 2K+, S6+, 4O2–
e. 2K+, S6+, O48–
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Customer: replied 5 years ago.

It is my mistake.

Pb(NO3)2+K2CO3 - PbCO3+KNO3

I got the answer. The numer is 2. Thanks a lot.

You're welcome, and thanks for the feedback.
I'd be glad to help you with more questions. You may send the request to me by adding 'For RRJha' before your question.

Regards,
Customer: replied 5 years ago.

Are you there?Are you working on my homework assignment?

I saw your another assignment, but there are too many questions and many of them requiring numerical calculations. So, I've left it open to other experts.