poojaguleria22

Name this reaction type, CO2 + H2O --> H2CO3

    Question 14 options:

Decomposition

Single Replacement

Combustion

Synthesis

Name this reaction type, Cl2 + 2KI --> I2 + 2KCl

  Question 13 options:

Decomposition

Single Replacement

Synthesis

Double Replacement

[A] Charge on a proton
[B] Charge on an electron
[C] Charge to mass ratio of an electron
[D] Mass of a Hydrogen atom

The reaction R-OH + R COOH-----> , would produce

a ketone
b ether
c aldehyde
d alcohol
e ester

Select all that is true pertaining to orbitals and bond angles

All the carbon and the nitrogen atoms are hybridized.

Carbons 1, 2, and 3 are hybridized and N is hybridized.

The O-C-N bond angle is 90 and the H-N-H bond angle is 109.5.

The H-C-H bond angle on carbon #3 is 120 and the carbon is hybridized.

For which among the following is not a true fruit?   

A.  Apple 
B.  Date 
C.  Grape
D.  Plum

Convert the Kelvin temperature 30K to Celsius temperature.

Convert the Kelvin temperature 98K to Celsius temperature.

Convert the Kelvin temperature 277 K to Celsius temperature

Convert the Kelvin temperature 334 K to Celsius temperature.

Convert 240 K and 468 K to the Celsius scale.

1. A group of proteins distributed along inner nuclear membrane form:

a) Nuclear pore

b) Nuclear lamina

c) Nucleosome

d) Nucleotides

2. Which nuclear structural element's function is a selective transport?

a) Nuclear lamina

b) Nuclear pore complex

c) Chromatin

d) Nucleolus

A solution contains 4.50 g of solute in 10.6 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 4.50 g of solute in 11.5 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 3.50 g of solute in 13.3 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 1.60 g of solute in 12.2 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 2.00 g of solute in 11.4 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 2.50 g of solute in 14.6 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 3.40 g of solute in 12.4 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 1.90 g of solute in 12.8 g of solvent. What is the mass percent of the solute in the solution?

A solution contains 1.80 g of solute in 11.8 g of solvent. What is the mass percent of the solute in the solution?

a solution contains 3.90g of solute in 14.2g of solvent. what is the mass percent of the solute in the solution

A solution contains 4.90 g of solute in 11.7 g of solvent. What is the mass percent of the solute in the solution?

mass percent: ___________

The second solution contains 18.1g of NaCl in 893mL of solution

General Chemistry

The total valence electrons for ?

   _________

NiCl3 is a strong electrolyte. determine the concentration of each of the individual ions in a 0.350 M NiCl3 solution.

Molarity and concentration

1. Prokaryotic genes have (choose ALL correct answers): 

a) Two regulatory sequences in promoter

b) Large exons and short introns

c) No exons

d) No introns

e) TATA-box and CpG island

Please be 100% sure.

Molarity and concentration

Question 1  Name the compound AlBr3

Question 1 options:

aluminum tribromide

tri aluminum bromide

aluminum bromine

aluminum bromide

Question 2 (2 points) Name this compound: KI

Question 2 options:

iodine potasside

potassium iodide

potassium iodine

potassium iodite

Question 3 (2 points) What is the name of Ag2S?

Question 3 options:

silver sulfide

silver sulfate

silver (II) sulfide

silver (I) sulfide

Question 4 (2 points) Name this compound:  NaBr

Question 4 options:

Bromide sodide

Sodium bromite

Sodium bromate

Sodium bromide

Question 5 (2 points) Ionic compounds are bonds between

Question 5 options:

Metals and Metals

Metals and Nonmetals

Nonmetals and Nonmetals

None of the above

Question 6 (2 points) What is the formula for magnesium phosphide?

Question 6 options:

Mg3P2

Mg2P3

Mg3(PO3)2

Mg2PO3

Question 7 (2 points) Name the following ionic compound: BeCl2

Question 7 options:

beryllium chlorine

beryllium dichloride

beryllium II chloride

beryllium chloride

Question 8 (2 points) Which of these compounds is ionic? 

Question 8 options:

Carbon dioxide

Silicon tetrachloride

Lithium bromide

Dinitrogen Trioxide

Question 9 (2 points) Write the name for the following compound: (NH4)3PO4

Question 9 options:

triammonium phosphite

ammonium phosphate

ammonium phosphite

ammonium phosphide

Question 10 (2 points) What is the name of N2O3

Question 10 options:

Dinitrogen oxide

Nitrogen trioxide

Dinitrogen trioxide

Nitrogen oxide

Question 11 (2 points) What is the chemical formula for Nitrogen triiodide?

Question 11 options:

NI

N3I

None of these

NI3

Question 12 (2 points) Name the following compound: NaNO3

Question 12 options:

Sodium Nitrogen Oxide

Sodium nitrate

Sodium nitrite

Sodium nitride

Question 13 (2 points) What is the name of Al(NO3)3?

Question 13 options:

Aluminum trinitrate

Aluminum (III) nitrate

Monoaluminum nitrate

Aluminum Nitrate

Question 14 (2 points) Name the following ionic compound: MgSO4

Question 14 options:

magnesium sulfate

magnesium sulfide

magnesium sulfoxide

magnesium sulfide

Question 15 (2 points) What is the name of Mg(OH)2?

Question 15 options:

Magnesium Hydride

Magnesium Dihydroxide

Magnesium Dihydride

Magnesium Hydroxide

The density of liquid oxygen is about 1.4g/cm3. Vaporized at0c and 760 torr, the same 1.4g occupies

Which nuclear structural element's function is pre-rRNA processing and ribosome subunit assembly?

a) Nuclear lamina

b) Nuclear pore complex

c) Chromatin

d) Nucleolus

Please fill in a, b, c and d 

1. Prokaryotic cells (only one correct answer)

a) Are unicellular, have a nucleus

b) Are multicellular, have a nucleoid

c) Have no DNA - just RNA

d) Are bacteria, have a circular DNA 

2. A complex of a DNA molecule and histone octamer is called?

a) Nucleosome

b) Nucleoplasm

c) Chromatid

d) Euchromatin

Question 10:

Give a schematic drawing of chromosome, label at least 5 structural elements and describe the function of them.

Question 11: 

Give an example of how to find an ORF (open reading frame) in a DNA sequence. Provide the appropiate sequence by using ATG as start code and TAG as stop code.