1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nignag [31]
3 years ago
14

HELP!!!!!

Chemistry
1 answer:
Crank3 years ago
5 0
To get this it helps to know the electronegativity numbers of the elements but it isn't required. You just need to know that Fluorine is the most electronegative element and that the farther away from Fluorine you are on the periodic table, the less electronegative you get.  The one exception to this rule is hydrogen with actually has an electronegativity of 2.1 while lithium has one of 1.0.  Also the higher difference in electronegativity between two atoms the more polar the bond is.  

Now to start the question.  H-Br could be a contender since H has an electronegativity number of 2.1 and Br is relatively close to Fluorine so we'll put that one aside for now.  H-Cl knocks out A because both bonds have H but one bond has Br and the other has Cl.  Cl is closer to Fluorine than Br so answer B is the contender now.  For answer C, I and Br are too close to have a higher electronegativity difference than H-Cl so that one isn't it.  Finally for answer D, I is much closer to Cl than H is so the electronegativity difference is much less, making your answer B.
You might be interested in
Which describes a homogeneous mixture?
Lady_Fox [76]

Answer:

A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout any given sample. ... An example of a homogeneous mixture is air. In physical chemistry and materials science this refers to substances and mixtures which are in a single phase.

6 0
3 years ago
Calculate the mass of chloroform that contains 1.00X10^12 molecules of chloroform
Brums [2.3K]

<span>Molar mass of chloroform (CHCl3)
C = 1 * 12 = 12 a.m.u
H = 1 * 1 = 1 a.m.u
Cl = 3 * 35.5 = 106.5 a.m.u
 Molar Mass (CHCl3) = 12 + 1 + 106.5 = 119.5 g / mol
 
Knowing that: The value of Avogadro's constant corresponds to approximately </span>6,02*10^{23} molecules, if chloroform contains 1,00 * 10^{12} molecules. <span> 
We have:
 
</span>1,00 * 10^{12} * 6,02 * 10^{23} = 6,02 * 10 ^ {35} molecules<span>
 
Now, how many grams are there in the chloroform molecule?

grams -------- molecules</span><span>
119,5 </span>→ 6,02 * 10^{23}
x → 6,02 * 10^{35}

6,02 * 10 ^ {23} * x = 119,5 * 6,02 * 10 ^{35}
6,02 * 10 ^ {23}x = 719,39 * 10^{35}
x =  \frac{719,39}{6,02}*10^{35-23}
\boxed{x = 119,5*10^{12}grams}
7 0
3 years ago
Study the diagram, which represents the general equation for photosynthesis.
Sladkaya [172]

Answer: Y glucose and Z oxygen

Explanation: Just finished the test

3 0
3 years ago
Which are examples of dynamic equilibrium
sweet-ann [11.9K]

Answer:Dynamic Equilibrium Examples. Any reaction will be in dynamic equilibrium if it's reversible and the rates of the forward and reverse reactions are equal. For example, say that you prepare a solution that is saturated with an aqueous solution of NaCl.

Explanation:

8 0
3 years ago
Read 2 more answers
Consider the positions of barium (Ba), sulfur (S), silicon (Si), and calcium (Ca) on the periodic table. The atoms of which elem
Rudiy27
Element      atomic number       position

Ba              56                             group 2, period 6

Ca              12                             group 2, period 3

S                16                             group 16, period 3

Si               `14                            group 14, period 3


Now, you need to know the properties of the different type of elements and the tendencies on the periodic table.


The metallic elements are, those placed on the left side of the periodic table, are the ones that release an electron more easily, so they will requiere less energy to give it up when forming chemical bonds.


The higher the metallic character the less the energy need to give up an electron.


The metallic character grows as the group number decreases (goes to the left) period increases (goes downward), so among the  elements considered, Barium will require the least amount of energy to give un an electron when forming chemical bonds.
5 0
3 years ago
Read 2 more answers
Other questions:
  • 5. The density of a substance is 3.4 X 10^3 g/mL. Mixing it with another substance increases the density by 1.5 X 10^1 times. Wh
    12·2 answers
  • Silver chloride, often used in silver plating, contains 75.27%Ag. Calculate the mass of silver chloride required to plate 195 mg
    13·1 answer
  • Which option names two processes that must occur to form soil? weathering breaks rocks into minerals and plants die and decay er
    10·2 answers
  • HELP I NEED THE ANSWER NOW!!!
    13·1 answer
  • a ________ amino acid is likely to be found on the surface of a protein molecule, where it can link to other molecules.
    13·1 answer
  • What are five different types of air pollutant each
    10·1 answer
  • Hey ;) butiful+hansome= me and you❤​
    14·2 answers
  • If 5.85 moles of CaCO3 are used in an experiment, how many moles of carbon dioxide are created? (Be sure to include units in you
    14·1 answer
  • Which statement about spontaneous and nonspontaneous processes is correct? Spontaneous processes are favored by a decrease in De
    10·1 answer
  • A The birthrate is higher than the death rate.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!