Chemistry High School

Which of the following interactions would be the strongest?

A. H2O and CH4

B. CH4 and CF4

C. H2O and HBr

D. HBr and CH4

Answers

Answer 1

Answer:

i think is c,my ans will not be 100%correct

Which Of The Following Interactions Would Be The Strongest?A. H2O And CH4B. CH4 And CF4C. H2O And HBrD.

Related Questions

what does primary succession end with

Answers

The final stage of succession is a climax community.

Substance A dissociates 100% in water to produce H3O+ ions while substance B dissociates 25% in water to produce OH- ions. What can be determined from this information?
A:Substance A is a strong acid and substance B is a weak base
B:Substance A is a weak acid and substance B is a strong base
C:Substance A is a strong base and substance B is a weak acid
D:Substance A is a weak base and substance B is a strong acid

Answers

Answer:

A:Substance A is a strong acid and substance B is a weak base

Explanation:

From this information, we can conclude that substance A is a strong acid and substance B is a weak base.

A strong acid is one that ionizes completely in solution. Most strong acids are usually concentrated. 100% dissociation is a complete ionization.

A weak base ionizes slightly in an aqueous solution. 25% dissociation is weak ionization.

Answer:

a

Explanation:

An isotope of Cesium -137 has a half-life of 30 years. If 1.0 g of Cesium – 137 disintegrates over a period of 60 years, how many grams of Cesium- 137 would remain?

Answers

Answer:

Explanation:

Radioactive decay follows the equation:

Ln [A] = -kt + ln [A]₀

Where [A] is amount of isotope after time t: Our incognite,

k is rate constant: ln 2 / Half-life = 0.0231 years⁻¹

t are 60 years

[A]₀ is initial amount of isotope: 1.0g

Replacing:

Ln [A] = -kt + ln [A]₀

Ln [A] = -0.0231 years⁻¹*60 years + ln 1.0g

ln [A] = -1.386

[A] = 0.25g

What do you predict will happen with the
soap bubble when the bottle is placed into
the hot water?

Answers

The bubble will grow and the bottle will start to get hot and steam will fill the inside perimeter of the bottle, the bubble will get too powerful to the point where it will eventually blow open the bottles cover and let out steam.

What color are the stars on the diagram with the lowest surface temperatures?

Answers

Answer:

red supergiants is the answer

Dating of Rock Layers
Answer all 12 questions relating to the images below
English (US)
100

Answers

Answer:

I'm sorry, we need the image to answer  it.

Explanation:

A clam farmer has been keeping records of the water temperature and the number of clams developing from fertilized eggs. The data is recorded above.


What is the dependent variable?

What is the independent variable?

What is the optimum temperature for clam development?

Answers

Answer:

The dependent variable is the number of clams developing from fertilized eggs.

The independent variable is the water temperature

The optimum temperature for clam development is 30 degrees centigrade.

Explanation:

The graph of the number of clams developing from fertilized eggs and water temperature is attached to this answer.

The independent variable is being manipulated in an experiment. As it changes, it produces a corresponding change in the dependent variable.

Here, the water temperature is the independent variable. As it changes, the number of clams developing from fertilized eggs (dependent variable) also changes alongside.

The optimum temperature is the temperature at which the greatest number of clams developing from fertilized eggs is produced. We can see from the graph that this temperature is 30 degrees centigrade.

helpppppp i hate chemistry
I will give brainiest who helps me with the correct answer
I promise

5. Name the compound which contain Strontium, Fluorine, and Oxygen.

Options:

Strontium fluorate
Strontium fluoride
Strontium chlorate
Strontium fluorine

Answers

Answer:

The first option: Strontium Fluorate.

Explanation:

because Fluorine and oxygen combines to make fluorate, Strontium stays the same.

p.s: i need help in geo and there's an exam tomorrow.

Which of these changes to a modern lifestyle would promote the
development of more-sustainable practices in the world food system?
O A. Switching from chicken to beef
B. Eating fewer processed foods
O C. Buying tropical fruits
D. Eating fresh vegetables year-round

Answers

I think it’s B. At least that’s what makes sense to me

Eating fewer processed foods would promote the development of more-sustainable practices in the world food system.

What are Processed food?

This is the food which has undergone some degree of alteration during preparation such addition of preservatives etc.

Eating less of it will ensure that more sustainable practices in the world food system are promoted.

Read more about Processed food here https://brainly.com/question/21201084

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A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?

Answers

Answer: strike-slip fault

Explanation:

Answer:

C; strike split

Explanation:

Can someone help? Ill give brainliest!

Directions: count each side of the reaction then Circle yes or no if it follows the law of conservation of mass

Answers

Answer:

It does follow the law of conservation of mass.

Explanation:

You start with 4 phosphorous atoms and 6 oxygen atoms, you end with 4 phosphorous atoms and 6 oxygen atoms.

For the water, what color is the oxygen molecule?

Answers

Answer:

red

1: The SCP/E-water molecule: oxygen atom (red color) and hydrogen atoms (white color).

Explanation:

Directions: Read through each scenario and identify the independent variable, dependent variable, and the control.

Question 1

1 pts

Rob is in charge of waxing the floor at the local mall. He wants to test a new brand of floor wax called

Squeaky Clean. Rob waxes 20 floor tiles with Squeaky Clean and 20 tiles with the original wax brand.

After one week he counts the number of scratches on the floor. What is the independent variable?

number of floor scratches

brand of floor wax

20 tiles with original brand wax

Answers

Answer:

The correct answer is - brand of floor wax.

Explanation:

The independent variable is the variable or the factor in an investigation which is manipulated or change in the experiment and affects the dependent variable and produces a various result.

In this investigation, there are different brands of the floor was are the independent variable as they are changed to see the effect on the scratches on the floor on 20 tiles for each brand.

What are the single sugars that are the building blocks of carbohydrates?

Answers

Answer:

Monosaccharides, these are the simplest building block of carbs

Explanation:

When propane is reacted in the presence of oxygen gas, the products of this combustion reaction are: A. CO + H2O B. CO2 + H2O C. C2H4 + H2O D. CH4 + H2O

Answers

Answer:

B. CO2 + H2O

Explanation:

Propane is an hydrocarbon as it contains only v=carbon and hydrogen atoms.

Whenever an hydrocarbon reacts with oxygen or undergoes a combustion reaction, two products are always formed only,

These two products are;

Carbon dioxide (CO2) and water (H2O)

This means the correct option is option B.

What is radioisotope?

Answers

Answer:

An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment.

Hope I could help!

Answer:

(RAY-dee-oh-I-suh-tope) An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment. Also called radionuclide.

Explanation:

Which type of stress causes fault-block mountains?

Answers

Fault-block Mountains Where tectonic forces put enough ten- sion on the Earth's crust, a large number of normal faults can result. Fault-block mountains form when this faulting causes large blocks of the Earth's crust to drop down relative to other blocks.

A group hikes from sea level to a mountain peak. Each letter in the diagram indicates a spot where the group stops to drinks boiling water. At Wich point in the hike does water have the highest point.

Answers

Answer:

oh my god i have learnt about this

Explanation:

Answer:

Point A

Explanation:

I dont know why but it was right on the test.

I have a question, about trends in the periodic table. Mostly focusing on ionization energy. From going from right to left it increases as the atom's size decreases. Can someone explain why this happens? Like why does it increase as the size decreases Thank you.

Answers

It increases because the electrons are held tighter together by the higher effective nuclear charge. The electrons are held in lower energy orbitals and closer to the nucleus and more tightly bound and harder to remove from the atom.

Which statement is a testable hypothesis?
A. Beans are the best plants to use in a science fair experiment.
B. Watering bean plants with salt water will make them grow faster.
C. Bean plants will become extinct before corn plants do.
D. Everyone can grow beans given the right instructions.
please help. i’ll give brainliest if ur answer is correct

Answers

Answer:

b

Explanation:

I think B because its saying that perhaps watering with salt water would make them grow faster, you don't know yet unless tested.

dfgasfsadfasdfasdfasdfadsf

Answers

Answer:

fsdafdsafdsafdsafdasfsagfd

Explanation:

Why is NCl3 not soluble in water?

Answers

Answer:

Explanation:

NCl3 does not dissolve in water because it is a nonpolar molecule which is different with water. NCl3 is nonpolar due to the difference in electronegativities between 3 atoms of Cl and 1 atom if N2.

Answer:

A polar solute dissolves into a polar solvent and a non-polar compound dissolves into a non-polar solvent, this rule is known as "like dissolves like".

describe a habitat of giraffe or an elephant(i prefer the giraffe tho, and please make it reasonable)

Answers

Answer:  Savanna, Woodland, or Grassland.

Giraffes eat new shoots and leaves, their habitat needs to have a good supply of trees -- they flock towards acacia trees in particular. Giraffes use their extremely long legs, necks and tongues to browse mainly from the thorns on the acacia tree. The tongue and the inside of the mouth are lined with tough tissue that protects against the thorns.

Hydrogen bond is not formed by 1) oxygen 2) nitrogen 3) chlorine
PLEASE HELP!!!

Answers

Answer:

Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 bahsgsh bvshgs d hg

What is the force needed to cause a 80kg object to accelerate at 1.6m/s??​

Answers

Answer:

The answer is 128 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 80 × 1.6

We have the final answer as

128 N

Hope this helps you

which of the following explains why salt water is considered a mixture​

Answers

Answer:

sal5 water = kaka

Explanation:

because i need points ty man

element x bonds with phosphate in a ratio of 3 ions of element x to 2 phosphate ions. what kind of ion does element x form?

Answers

Answer:

The kind of ion is X2+ ( where the ion is formed as a result of the loss of two valence electrons)

Explanation:

The ratio of ions of the element X to the phosphate ions is 3 to 2

So what we have as formula of these will be;

X3(PO4)2

Generally we have the phosphate ion formula as; PO4^3-

So for this formula above to be possible then the element x will have a formula of its ion X2+

Which element is not conserved in this unbalanced chemical equation?
2NaOH + H2S04 - NaSO4 + 2H20
Ο Α. Η
O B. S
O c. O
O D. Na

Answers

D. Na

There are 2 Na in the reactants, and only 1 Na in the product.

In the given unbalanced reaction, the number of sodium is not balanced. There must have two sodium in the product side also. The correct formula of sodium sulphate is Na₂SO₄.

What is mass conservation law?

According to the law of conservation of mass, the total mass of a system is conserved. Thus, mass can neither be created nor be destroyed. Therefore, for a chemical reaction, the total mass in the product side must be equal to the total mass in the reactant side.

The balanced equation of  a chemical reaction thus, obeying the mass conservation law where, each element have to be equal in number in both sides.

In the given reaction, the number of Na in reactant side is 2 and that in product side is 1 only. Thus total mass of sodium is not conserved. It can be corrected as Na₂SO₄ in the product side.

To find more on mass conservation, refer here:

https://brainly.com/question/13383562

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Momentum is mass times

A. acceleration
B. velocity
C. distance

Answers

B. velocity

This is the answer

What is the frequency of a photon with an energy of 3.38 x 10-19 J?​

Answers

Hey There!_____________________________________Answer:

[tex]\huge\boxed{5.1x[tex]10^{14}[/tex]Hz}[/tex]

_____________________________________DATA:

E = [tex]3.38 x 10^{-19}[/tex]

h = [tex]6.625x10^{-34}[/tex]

f = ?

_____________________________________SOLUTION:

Energy of Photon is given by,

                                   

                                   E = hf

Rearrange the equation,

                             

                                    f = [tex]\frac{E}{h}[/tex]

where,

           E = energy

           h = planck's constant

           f = frequency

------------------------------------------------------------------------------------------------------------

Substitute the variable in the equation,

 

                                 f = [tex]\frac{3.38x10^{-19}}{6.62x10^{-34}}[/tex]

Simplify the equation,

                               

                                  f = 5.10 x 10^14 Hz          

                         

_____________________________________Best Regards,'Borz'

Answer:

b. 5.10 x 10^14 Hz

Explanation:

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