What causes a molecule to have a net dipole moment?
A. The presence of only nonpolar bonds in the molecule
B. The presence of Van der Waals forces
C. The presence of a net charge that does not cancel out
D. The presence of both covalent and ionic bonds in the molecule

Answer:

250.656

Explanation:

find no of moles in the 600ml=3.36,find molar mass of kcl(35.5+39,if 1mole=74.6g what about 3.36moles

Answer:

4.22675

Explanation:

"Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides." - Wikipedia

Answer:

It is called catalyst.

Answer:

A catalyst

Explanation:

is a substance that can alter the rate of a chemical reaction. Catalysts can be successfully used to increase the rate of a chemical reaction.

Answer:

The metals have the tedency to lose electrons and become positive ions

Explanation:

In order to attain noble gases electronic configuration, metals of group I A lose one electron and II A lose 2 electrons with ionization energy.

Answer:

[tex]4.6875x10^20[/tex]

Explanation:

Answer:

1 mole Of Helium = Weight of Helium/4Weight of Helium = 1*4 = 4 grams 1 mole of Helium contains 6.023*10²³ ( Avogadro number) atoms. Number of moles of in 4 grams of Hydrogen 4 grams is = given weight / molecular weight of Hydrogen (H₂) = 4/2 =2 Number of atoms/molecules in 2 moles of Hydrogen is (2*6.023*10²³) atoms. = 12.046*10²³ atoms.

(Hope this helps)

The number of atoms in 2 moles of helium is 1.204×10²⁴ atoms

From Avogadro's hypothesis,

1 mole of any substance = 6.02×10²³ atoms

Thus,

1 mole of helium = 6.02×10²³ atoms

With the above information in mind, we can obtain the number of atoms in 2 moles of helium as follow:

1 mole of helium = 6.02×10²³ atoms

Therefore,

2 moles of helium = 2 × 6.02×10²³ atoms

2 moles of helium = 1.204×10²⁴ atoms

Thus, we can conclude that 2 moles of helium contains 1.204×10²⁴ atoms

Learn more: https://brainly.com/question/24848191

Answer:

80

Explanation:

im not rlly sure exactly but i think thats the anser

Answer:

0.74176 M HCl

Explanation:

1) Write out a balanced equation.

  KOH + HCl --> KCl + H2O

2) Calculate #mol KOH in 76.0mL needed for the titration.

 1.22 mol KOH in 1000mL

 x mol KOH in 76.0mL

 x = 0.09272 mol KOH

3) Use the balanced equation ratio (from step 1), 1 mol KOH : 1 mol HCl.

0.09272 mol KOH = 0.09272 mol HCl

4) 125mL of the HCl solution was used for the titration, so find the molarity.

0.09272 mol HCl is in 125mL

x mol HCl in 1000mL

x = 0.74176 mol HCL / 1 L

SO... 0.74176 M HCl is the answer.

*hope this helped*

- A Kind Stranger

Answer:

1- Dropping a sliced orange into a vat of Sodium Dydroxide

Explanation:

The other answers (2-4) are only physical changes that don't change any chemical compositions.

Answer:

Explanation:

A. Carbon dioxide

D. Oxygen

Answer:

Oxygen and sugar

Explanation:

Answer:

c

Explanation:

Answer:

3.

Explanation:

4 carbon equals butane

O=C-NH2 equals amide

The chemical name for the compound with the chemical formula shown in the image is 1-butanamide.

In order to name the compound:

Four (4) carbon is named as "But-" and the functional group is an amide on the first carbon.

Thus, the chemical name would be 1-Butanamide.

More on organic naming can be found here:  https://brainly.com/question/10291752

Answer:

are drifting on a sea of magma.

Explanation: Please mark brainliest.

Answer:

Your answer is D. It is the heat required to change a gram of substance from a liquid to a gas.

Answer: Solar winds have an influence all the way to about 160 AU from the Sun. About how many kilometers is that?

24,000,000,000 km

48,000,000,000 km

240,000,000,000 km

480,000,000,000 km

Explanation:

Answer:

By using the speed of sound in water

Explanation:

(Which is about 1500 m/s in sea depending on the sea water density )

Answer:

3 mol/L

Explanation:

You should know or have the equation to solve for Molarity which is;

M = n/v           (M: Molarity) (n: moles of solute) (v: Liters of solute)

You can start off differently but I would start by converting the mL to L. This is your "v" value.

50.0 mL/ 1000 mL = 0.05 L

Now, you have to convert grams to moles in order to solve for molarity (M).

1.) On the periodic table find the molecular weights of Na and Cl.

Na= 22.99 g/mol         Cl= 35.45g/mol

2.) Add them together to have their combined molecular weights.

22.99 + 35.45= 58.44 g/mol

3.) Now, you're going to use the "picket fence method" or whichever your teacher taught you to convert from grams to moles. This will be your "n" value. (I cannot show it on here without it looking weird, so my sincere apologies.)

10.0 g/ 58.44 g = 0.17111 mol

4.)You are now going to plug in your answers into the equation for Molarity.

M= 0.17111 mol / 0.05 L = 3.4222

5.) I am sure your professor might be a stickler so for sig figs sake when you multiply or divide use the smallest amount of sig figs you see which is 1. Round 3.4222 to 3 mol/L

Sorry this explanation is long let me know if you need a better more written out sample.

Answer:

i agree with the above to collect rock samples

Explanation:

took test got 100 best of luck

The  purpose of the Apollo space missions was to to collect rock samples from the moon.

The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia).The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System.

It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at 0.1654 g, with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density.

Learn more about moon,here:

https://brainly.com/question/30653068

#SPJ3

Answer:

Mass is how much matter an object has. Weight is how much gravity an object is being acted upon.

Explanation:

The mass of an object will stay the same no matter where you place it. But if you were to place the object, in the moon for example, then the weight of the object would be less since there is less gravity on the moon.

Answer:

As the temperature of a sample of gas falls from 45.0ºC to 30.0ºC, its pressure falls to 300.

Explanation:

Answer: Pounds per Cubic inch(lb/in3)

Proper lane placement can include positioning your car 36 inches from the right or left line. Therefore, option B is correct.

Using different lane positions to make adjustments for potential problems and create larger space between car and problem situations. Lane position is the placement of car in the center, on the right, or on the left of a lane.  The width of a lane is twelve feet on most highways or streets.

There are three main positions are lane position 1 is center of lane, lane position 2 is left side, and lane position 3 is right side. Position 2 is left side of lane is for car.

Position 3 is a vehicle placement to the right when a restriction to path of travel or your line of sight occurs. Proper lane placement can include positioning your car 36 inches from the right or left line.

Thus, option B is correct.

To learn more about lane positioning, follow the link;

https://brainly.com/question/11661954

#SPJ2

Answer:

around 0.283

Explanation:

Answer:

Problem,  Variables,  Hypothesis,  Research,  Procedure,  Data, Conclusion.

Explanation:

First, you have to know what the problem that you're talking about is. Then, you have to know the independent, dependent, and controlled variables are in order to make a hypothesis. Then do research about the topic. After that, you make the procedure your experiment, if that's what your doing. Then after the experiment, you find the data. Using that data, you make a conclusion.

Answer:

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{N}[/tex]

Explanation:

The unbalanced nuclear equation is

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, ?[/tex]

Let's write the question mark as a nuclear symbol.

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{Z}^{A}\text{X}[/tex]

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.  

Then

15 =  0 + A, so A = 15 -   0 = 15, and

 6 = -1 + Z, so Z  =   6 + 1 =    7

Then, your nuclear equation becomes

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{X}[/tex]

Element 7 is nitrogen, so the balanced nuclear equation is

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{N}[/tex]