For each bond, show the direction of polarity by placing a + sign next to the atom expected to have a partial positive charge and a − sign next to the atom expected to have a partial negative charge.
(A) { } Ge-Se { }
(B) { } Ge-Br { }
(C) { } Br-Se { }

Answers

Answer 1

Answer:

A) { + } Ge-Se { -}

B) { + } Ge-Br { - }

C) { - } Br-Se { + }

Explanation:

The (-)ive sign shall be placed for the atom with higher electronegativity, while the other atom will be electropositive.  

a) Electronegativity of Ge = 2.01

Electronegativity of Se = 2.55

{ + } Ge-Se { -}

b) Electronegativity of Ge = 2.01

Electronegativity of Br = 2.95

{ + } Ge-Br { - }

c) Electronegativity of Br = 2.95

Electronegativity of Se = 2.55

{ - } Br-Se { + }


Related Questions

what information is given on a material safety data sheet?

Answers

Answer:

The MSDS lists the hazardous ingredients of a product, its physical and chemical characteristics (e.g. flammability, explosive properties), its effect on human health, the chemicals with which it can adversely react, handling precautions, the types of measures that can be used to control exposure, emergency and first

Explanation:

just put:- it lists the hazardous ingredints- its effect on human health- how the chemicals react to it- how to hanle- how to control exposuresHOPE THIS HELPS!BRAINLIEST?

g In science, we like to develop explanations that we can use to predict the outcome of events and phenomena. Try to develop an explanation that tells how much NaOH needs to be added to a beaker of HCl to cause the color to change. Your explanation can be something like: The color change will occur when [some amount] of NaOH is added because the color change occurs when [some condition]. The goal for your explanation is that it describes the outcome of this example, but can also be used to predict the outcome of other examples of this phenomenon. Here's an example explanation: The color of the solution will change when 40 ml of NaOH is added to a beaker of HCl because the color always changes when 40ml of base is added. Although this explanation works for this example, it probably won't work in examples where the flask contains a different amount of HCl, such as 30ml. Try to make an explanation that accurately predicts the outcome of other versions of this phenomenon.

Answers

Answer:

See explanation

Explanation:

A titration involves the addition of a titrant to an analyte solution. It is a method of volumetric analysis.

When a particular volume of titrant is added, the colour changes to signal the end point of the reaction.

The point at which the colour changes is called the equivalence point. This is the point at which the amount of titrant added is just enough to completely neutralize the analyte solution.

Hence the volume NaOH that needs to be added to the beaker containing HCl to cause a colour change is the volume of NaOH that is just enough to completely neutralize the HCl solution.

Liquid hexane CH3CH24CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 4.3 g of hexane is mixed with 25.8 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to 2 significant digits.

Answers

Answer:

13g of CO₂ is the maximum amount that could be produced

Explanation:

The reaction of hexane with oxygen is:  

C₆H₁₄ + 19/2O₂ → 6CO₂ + 7H₂O  

Where 19/2 moles of oxygen react per mole of C₆H₁₄

 

To solve this question we need to find theoretical yield finding limiting reactant :

Moles C₆H₁₄:  

4.3g C₆H₁₄ * (1mol / 86.18g) = 0.0499 moles  

Moles O₂:  

25.8g * (1mol / 32g) = 0.806 moles  

For a complete reaction of 0.0499 moles of C₆H₁₄ are needed:

0.0499 moles of C₆H₁₄ * (19/2 mol O₂ / 1mol C₆H₁₄) = 0.474 moles of O₂.

As there are 0.806 moles, O₂ is in excess and C₆H₁₄ is limiting reactant

In theoretical yield, the moles of hexane added = 6Moles of CO₂ produced. Moles of CO₂ are:

0.0499 moles C₆H₁₄ * (6mol CO₂ / 1mol C₆H₁₄) = 0.299 moles CO₂

In grams:

0.299 moles CO₂ * (44.01g / mol) = 13g CO₂

13g of CO₂ is the maximum amount that could be produced

What is the ratio
amount (mol) Fatoms
amount (mol) Xe atoms
Enter your answer as an integer.
Pls help

Answers

Answer:

Empirical formula

Explanation:

The empirical formula of a compound is the simplest whole number ratio of atoms of each element in the compound. It is determined using data from experiments and therefore empirical.

describe how zinc oxide is made from zinc sulfide

Answers

CO2 adsorbed onto the ZnO, which is progressively lost during the experiment ? Are you sure about the quality of your ZnO ? If it is not a fresh one, it might be carbonated, and decompose into ZnO + CO2, thus losing weight. Alternatively, you can check if you produced ZnS through the expected reaction ZnO + H2S → ZnS + H2O : Take a small part of your sorbent on a lab tile, add a few drops of H2SO4 (4 mol/L), observe and smell. If ZnS is present, then a little amount of H2S gas will be produced: you will see it or at least smell it, as the nose is sensitive to 3 ppm of H2S in air. Then you'll conclude whether the expected reaction occurred or not.

7. A number of reactions that take place on the surfaces of catalysts are zero order in the reactant. One example is the decomposition of ammonia on hot tungsten. In one experiment, the partial pressure of ammonia decreased from 21 kPa to 10 kPa in 770 s. (a) What is the rate constant for the zero-order reaction

Answers

Answer:

14.29 Pa/s

Explanation:

Given that, for a zero order reaction;

[A] = [A]o - kt

[A] = pressure at time =t

[A]o = initial pressure

k = rate constant

t = time taken

10 * 10^3 Pa  = 21 * 10^3 Pa - 770k

10 * 10^3 Pa - 21 * 10^3 Pa = -770k

-11* 10^3 = -770k

k = -11* 10^3/-770

k = 14.29 Pa/s

4. How many grams are there in 7.5 x 1027 formula units of Sr(OH)2?
5. How many grams are there in 9.30 x 1026 molecules of H2SO4?
PLEASE ANSWER I WILL MARK YOU BRAINLIEST

Answers

Answer:

  4) 1.52 × 10^6 g

  5) 1.51 × 10^5 g

Explanation:

4. There are 121.63 g/mol of Sr(OH)₂, and there are 6.02214·10^23 formula units per mol. Then the number of grams is ...

  (7.5×10^27 formula units) × (121.63 g)/(6.02214×10^23 formula units)

  = 7.5×121.63/6.02214 × 10^4 g

  ≈ 1.52 × 10^6 g

__

5. H₂SO₄ has a molar mass of about 98.079 g, so the given quantity has a mass of about ...

  (9.30×10^26 formula units)(98.079 g)/(6.02214×10^23 formula units)

  = 9.30×98.079/6.02214 × 10^3 g

  ≈ 1.51 × 10^5 g

Answer:

4. 1.52×10^6 g

5. 1.51×10^5 g

Explanation:

hope it helps

#CARRYONLEARNING

what is a arieal animals?​

Answers

animals that can fly

Why is it important to know gas properties at STP?

Answers

Answer:

STP values are most often cited for gases because their characteristics change dramatically with temperature and pressure. One common definition of STP is a temperature of 273 K (0° Celsius or 32° Fahrenheit) and the standard pressure of 1 atm. Under these conditions, one mole of a gas occupies 22.4 L.

Difference between Aluminum and Duralumin​

Answers

Aluminum is the pure metal element from which the Duralumin alloy is made.

Duralumin contains aluminum and copper. An alloy developed first by a German metallurgist. Dura is actually part of the trade name: dura for durable.

More durable than raw aluminum it is used in airplane frames, laminated with coat of aluminum. Combining strength of the alloy and corrosion resistance of pure aluminum.

Please answer this. List the three most abundant minerals in this bottle of mineral water.​

Answers

The three most abundant minerals in a water bottle are calcium, potassium, and magnesium. {etc}

Write the balanced equation and draw the particulate representation of the following chemical reaction: sodium metal reacts with chlorine gas to produce sodium chloride.
Draw the complete decomposition of 4 molecules of hydrogen peroxide (H2O2) into water and oxygen gas.
Complete the particulate representation of the combustion of methane (CH4) with oxygen to form carbon dioxide (CO2) and water.

Answers

Answer:

2Na + Cl2 ------> 2NaCl

4H2O2 --------> 4H2O + 2O2

CH4 + 2O2 -------> CO2 + 2H2O

Explanation:

The balanced chemical equations for the given chemical reactions are given serially i) 2 Na+Cl₂[tex]\rightarrow[/tex] 2 NaCl  ii) 4 H₂O₂[tex]\rightarrow[/tex] 4 H₂O + 2 O₂  iii)CH₄ +2 O₂[tex]\rightarrow[/tex]CO₂ +2 H₂O

What is  chemical equation ?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ2

There are four conditions an atom needs to meet to participate in hydrogen bonding. It needs to be_______ enough not to bump into other atoms when approaching the 1s orbital of the hydrogen, it needs to carry at least one________ atom, it needs to be_________enough to create a delta on the connected hydrogen, and it needs to have at least one________.

Answers

Answer:

The conditions are

1) Small enough

2) Electronegative atom

3) highly electronegative

4) lone pair of electrons

The correct statement therefore is

It needs to be small enough not to bump into other atoms when approaching the 1s orbital of the hydrogen, it needs to carry at least one electronegative atom, it needs to be highly electronegative enough to create a delta on the connected hydrogen, and it needs to have at least one lone pair of electrons.

Explanation:

Hydrogen bonding is a type of intermolecular bond that occurs between the partial positive charge (delta) on a hydrogen atom bonded to a small highly electronegative element (like nitrogen, oxygen or fluorine) and the free electrons on another electronegative element of another molecule.

The hydrogen atom with the partial positive charge (delta) is known as the hydrogen bond donor, while the electronegative element, carrying lone electrons is called the hydrogen bond acceptor.

Let's take a deeper look at these terms:

1) Hydrogen bond donor

Using water (H₂O) as an example, the high electronegativity of the oxygen atom covalently bonded to the hydrogen atom draws the lone electron in the 1s orbital of the hydrogen atom, creating a partial positive charge (d⁺) on the hydrogen atom. This is what happens within one water molecule

2) Hydrogen bond acceptor

When two or more molecules of water interact, the partial positive charge (d⁺) on the hydrogen atom of one molecule, is attracted to the valence or free electrons on the oxygen atom of a nearby molecule of water thus creating a dipole-dipole intermolecular bond known as a hydrogen bond.

             

For the hydrogen bond to be effective, the electronegative atom bonded to the hydrogen acting as the hydrogen bond donor in the first water molecule needs to be small enough so as not to disrupt the 1s orbital of the hydrogen atom. The smaller the size of the electronegative atom, the stronger the partial negative charge created on the hydrogen atom.

The valence or free pair of electrons on the electronegative (oxygen) atom of the second molecule of water (hydrogen bond acceptor) is what attracts the partial positive charge on the hydrogen atom to create the hydrogen bond

What mass (g) of magnesium nitride (Mg3N2) can be made from the reaction of 1.22 g of magnesium with excess nitrogen? __Mg + __N2__Mg3N2
a. 1.69 b. 15.2
c. 5.07 d. 5.02 e. 3.38
I’ll give brainest

Answers

Answer:

1.69 g Mg₃N₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional AnalysisReactions RxNExplanation:

Step 1: Define

[RxN - Unbalanced] Mg + N₂ → Mg₃N₂

[RxN - Balanced] 3Mg + N₂ → Mg₃N₂

[Given] 1.22 g Mg

[Solve] grams Mg₃N₂

Step 2: Identify Conversions

[RxN] 3 mol Mg → Mg₃N₂

[PT] Molar Mass of Mg - 24.31 g/mol

[PT] Molar Mass of N - 14.01 g/mol

Molar Mass of Mg₃N₂ - 3(24.31) + 2(14.01) = 100.95 g/mol

Step 3: Stoich

[DA] Set up:                                                                                                      [tex]\displaystyle 1.22 \ g \ Mg(\frac{1 \ mol \ Mg}{24.31 \ g \ Mg})(\frac{1 \ mol \ Mg_3N_2}{3 \ mol \ Mg})(\frac{100.95 \ g \ Mg_3N_2}{1 \ mol\ Mg_3N_2})[/tex][DA] Multiply/Divide [Cancel out units]:                                                         [tex]\displaystyle 1.68873 \ g \ Mg_3N_2[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

1.68873 g Mg₃N₂ ≈ 1.69 g Mg₃N₂

What is the correct name for Hg(NO3)2?
Mercury (I) nitrate
Mercury (II) nitrate
Mercury nitroxide
Mercury dinitride

Answers

Answer: Hg(NO3)2 = Mercury (II) nitrate

The other answer is wrong. Mercury (I) nitrate is Hg2(NO3)2.

We use less than 1% of the water on Earth for

Answers

Answer: drinking, bathing.

Explanation:

Brushing teeth,washing face,washing hands

How are you finding the moles of the unknown substance when you are only given the grams of the unknown molecular compound?

Answers

Answer:

Determine the moles of unknown (the solute) from the molality of the solution and the mass of solvent (in kilograms) used to make the solution. Determine the molar mass from the mass of the unknown and the number of moles of unknown.

Given the following steps for a mechanism:
Step 1: O3 + NO = NO2 + O2 (slow)
Step 2: NO2 + O = NO + O2(fast)

Define mechanism.



Answers

Explanation:

Prokaryotes have the advantages associated with greater simplicity, including more rapid reproduction, rapid mutation and adaptation to new environments, and more diverse metabolic systems. They also possess an ability to pass on adaptive genes to other bacteria in the form of plasmids.

Sarah was walking and picked up a rock that she thought looked interesting. The rock appeared to have layering, and contain fragments of shells and bones. What is the correct classification of the rock Sarah picked up?

Igneous
Metamorphic
Sedimentary
Volcanic

Answers

The answer would be ~sedimentary~

Hope this helps

Have a great day/night

When did Martin Luther king JR became a pastor/minister?

Answers

1954 to 1960 is the time period he was a pastor/minister

How many liters of a 15% NaCl solution should be mixed with 2 L of a 20% NaCl solution to obtain a 16%
NaCl solution?

Answers

Answer:

8 liters of 15% NaCl solution should be mixed with 2 L of a 20% NaCl solution to obtain a 16%  NaCl solution

Explanation:

The method employed here is known as alligation technique.

Alligation is a method used to calculate the proportion of any two solutions to be mixed to prepare final solution of required concentration.

Let the number of liters of the 15% NaCl solution be X

A mixture of X liters of 15% NaCl + 2 liters of 20% NaCl gives X + 2 liters of a solution whose concentration is 16%

X  * 15% + 2 * 20% = 16% * X + 2

0.15X + 2 * 0.2 = 0.16 X + 0.16 * 2

0.15X + 0.4 = 0.16X + 0.32

0.16X - 0.15X = 0.4 - 0.32

0.01X = 0.08

X = 0.08/0.01

X = 8 liters

Therefore, 8 liters of 15% NaCl solution should be mixed with 2 L of a 20% NaCl solution to obtain a 16%  NaCl solution

Two reactants that are used in the process of cellular respiration are

glucose and water
oxygen and water.
water and carbon dioxide.
carbon dioxide and oxygen.

Answers

Answer:

The answer is actually glucose and oxygen

Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of :
0.0067·Ms−1: 2N2O(g)→2N2(g)+O2(g)
Suppose a flask is charged under these conditions with of ammonia. After how much time is there only left? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to significant digits.

Answers

Answer:

Explanation:

From the given information:

[tex]2NO_2_{(g)} \to 2N_{2(g)} + O_{2(g)}[/tex]

The above reaction is a zero-order reaction.

The rate constant = 0.0067 M-s⁻¹

Suppose the volume of the flask = 4L

Initial Mol of dinitrogen monoxide = 300 mmol

The final mol of dinitrogen monoxide = 150 mmol

The molarity of dinitrogen monoxide = [tex]\dfrac{ \text{number of moles of dinitrogen monoxide }}{\text{volume of flask}}[/tex]

[tex]= \dfrac{300 \ m}{ 4 L}[/tex]

= 0.0075 mmol/L

= 0.0075 L

The final concentration  [tex]= \dfrac{150 \ m}{ 4 L}[/tex]

= 0.0375 L

By applying zero order equation

[tex]kt = [A_o] -[At][/tex]

[tex](0.0067)(t) = 0.075 - 0.0375[/tex]

[tex](0.0067)(t) = 0.0375[/tex]

[tex]\mathbf{t = 5.59 \ seconds}[/tex]

Which is the correct molar mass for the compound h2SO4

Answers

Explanation: just add the atomic masses on the periodic table together for each atom.

Answer:Sulfuric acid

Explanation:because I said so

Mason notices that his boat sinks lower in the water in a freshwater lake than in the ocean. what could explain this

Answers

Answer:

Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?

Explanation:

The freshwater has less density then the ocean!

How is a magnetic field produced?
O when an electromagnetic field interacts with a magnet
O when a current runs through a conductor
O when an object has an electric charge
O when electrons move through a circuit

Answers

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. ... Magnetic fields are produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin.

Answer: when an electromagnetic field interacts with a magnet

Explanation:

if a gas at 300k occupies 3.60 liters at a pressure of 1.00 atm, what will be it’s new pressure if the volume is compressed to 2.0 liters at a temperature of 450K?

Answers

Answer: The new pressure if the volume is compressed to 2.0 liters at a temperature of 450K is 2.7 atm

Explanation:

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 1.00 atm

[tex]P_2[/tex] = final pressure of gas = ?

[tex]V_1[/tex] = initial volume of gas = 3.60 L

[tex]V_2[/tex] = final volume of gas = 2.0 L

[tex]T_1[/tex] = initial temperature of gas = [tex]300K[/tex]

[tex]T_2[/tex] = final temperature of gas = [tex]450K[/tex]

Now put all the given values in the above equation, we get:

[tex]\frac{1.00\times 3.60}{300}=\frac{P_2\times 2.0}{450}[/tex]

[tex]P_2=2.7atm[/tex]

The new pressure is 2.7 atm

What is a net ionic equation?
A. An equation that shows all substances as compounds
B. An equation that is balanced on both sides
C. An equation showing only what is involved in the reaction
D. An equation that shows all dissolved compounds as ions

Answers

Answer:

I think it will option D hope it helps

cos(A)+cos(2A)+cos(3A)=0 is not an identity​

Answers

Answer:

this is the required answer look it once

What is the molecular formula for hydrogen peroxide?

Answers

The answer is “H2O2” .....
Other Questions
Can someone help me please? How did Paine's reasoning in this passage influence the colonists' views of government?They invited George Washington to become king.They decided to seek a reconciliation with Great Britain.They rejected the monarchical form of government.They invited King George III to visit the colonies. In some cases, a trait is determined by multiple alleles interacting. in rabbits, coat color is one of those traits. Therefore alleles for color color each of which causes a different phenotype. Exam in the table below and answer the question. A Himalayan and a chinchilla mate, and some of the resulting offspring are white. What must the genotypes of the parents be? To travel to school, Gavin must walk to the bus stop. The bus trip coversfour times the distance that he walks. He then needs to walk 500 m toschool. If the school is 10 km away from Gavin's home, how far does hewalk to the bus stop? Which of the following is an example of how the principle of beneficence is applied to a study involving human subjects? 5x 2x = 12How do I solve Please help:What are the solutions to the system of equations?x^2 + y^2 = 5y = 2xThe solution with the smaller x value is (?)The solution with the larger x value is (?) helppppppppppppppp marking brainliestWrite an essay either supporting or opposing this view. "School devote too much time to academic subjects and not enough time to sports and practical subjects." 7. (a) At a distance of d/5 from a positive charge, by what factor is the electric potential changed: (1) 1/5, (2) 5, (3) 1/25 or (4) 25? Why? (b) How far from a +2.0 uC charge is a point with an electric potential value of 15KV? (c) How much of a change in potential would occur if the point were moved to three times the distance? Can someone plz help me !!! A ball is thrown straight up from the top of 128 foot building with an initial speed of 32 feet per second. How long will it take for the ball the hit the ground? How high will the ball be after 3 seconds? I need help with this. I have no clue how to do it and it is due soon. Please help me!!! What would it take for humans to not only survive in the desert but to thrive in the desert and adapt to the environment? Hi can someone please help me with this? Mineral mining can destroy vegetation and cause soil erosion.True or False 15. An irregular pentagon has side lengths of (x + 3), (2x - 4), (4x + 5),(3x 1), and x. Which simplified expression represents the pentagon'sperimeter?A 11x - 3B 24x + 60C 11x + 3D -9x + 3 Help please it finding the area of a composite figure We brought our books, so I hope they will bring_____.A. theirB. them C. theirs Identify the key metabolic process for step I and the key metabolic process for step II, and briefly explain how each process promotes movement of carbon through the cycle. For each process, your explanation should focus on the role of energy in the movement of carbon. *PLEASE HURRY AND ANSWER* What was Alexander Hamilton's view of the national government?a.) It should be weak except for the president.b.) It should be weak, and the state governments should be strong.c.) It should be strong--especially the executive branch.