What is the frequency of a photon that has 3.82 x 10^-20 J of energy? ​

Answer:

vxxbvfdb

Explanation:

Answer:

sorry dude

Explanation:

i got no clue

Answer:

2KClO3 —> 2KCl + 3O2

The coefficients are 2, 2, 3

Explanation:

From the question given above, we obtained the following equation:

KClO3 —> 2KCl + 3O2

The above equation can be balance as follow:

There are 2 atoms of K on the right side and 1 atom on the left side. It can be balance by putting 2 in front of KClO3 as shown below:

2KClO3 —> 2KCl + 3O2

Now, the equation is balanced.

Thus, the coefficients are 2, 2, 3

Answer:

sodium

Explanation:

Answer:

Contour plowing

Explanation:

Contour plowing is one of the activity that can help control the rate of erosion in a given place.

Answer:

Explanation:

Hydrogen has 1 proton and one nuetron

Oxygen has 8 protons nad 8 neutrons

The answer is D

Brainliest?

Answer:

FALSE

Explanation:

right answer on plato:)

Explanation:  an ionic bond, is when a atom basically gives a electron to another, forms when one atom becomes stable by losing its outer electrons and the other atoms become stable by gaining the electrons covalent bonds form when sharing atoms results in the highest stability possible

Answer:

D. electrons

Explanation:

Chemical bonds occur as a result of electrons (negatively-charged subatomic particles) being transferred among atoms. The transfer happens when electrons are being stolen or shared from an atom to another. The reason behind this is because atom's atomic shells are naturally inclined to be full. Thus, if one atom has extra electrons, that atom will most likely share his electrons to another atom lacking in it.

Answer:

1s22s22p63s23p4

Explanation:

Sulfur is located in the p block and has 6 valence electrons (the 2 exponent on the 3s and the 4 exponent on the 3p add up to 6)

The location and energy of all the valence electrons of electrically-neutral sulfur ( S ) is 3s₂3p₄.

Chemical element sulfur has the letter S and atomic number 16. It is multivalent, nonmetallic, and plentiful. Sulfur atoms normally combine to create cyclic octatomic molecules, which have the chemical formula S8. At room temperature, elemental sulfur is a crystalline solid that is brilliant yellow.

In addition to being a fungicide and an ingredient in black gunpowder, sulfur is used to vulcanize black rubber. However, the majority of sulfur is utilized in the creation of sulfuric acid, which is arguably the most significant chemical produced by western civilisations.

Sulfur can be found naturally and in metal sulfide ores. Natively, it may be found close to hot springs and volcanoes.

Thus, option B is correct.

To learn more about sulfur, follow the link;

https://brainly.com/question/16829809

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Answer:

I think the answer is B

Explanation:

Answer:

oxygen atom is a unstable atom so it gets attached to other oxygen atom sharing valance electrons to become stable

C is the right ans

Answer:

Zinc (Zn) combines with hydrogen chloride (HCI) to form hydrogen gas(H2) and zinc chloride (ZnCl2).

[tex]\sf Zinc+Hydrogen\:Chloride \longrightarrow Hydrogen\:gas+Zinc\:Chloride[/tex]

[tex]\sf Zn+HCL \longrightarrow H_2+ZnCl_2 [/tex]

[tex]\sf Zn+2HCL\longrightarrow H_2+ZnCl_2 [/tex]

Answer:

Explanation:

Answer is C

Answer:

Detergent lowers the surface tension of water enough so that bubbles can form. ... Glycerin makes stronger, longer-lasting bubbles, but corn syrup is often substituted in bubble solutions because it is cheaper.

Explanation:

Hope this helps.

It reduces the [surface] tension of the water to form bubbles

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, in order to calculate the percentage yield of an extraction/isolation, the formula to be used is below

percent yield = isolated mass/total mass × 100

The mass of the yield (which can also be referred to as isolated mass) was provided to be 0.15 g but the total mass of the (4-chlorophenyl)bis(4-methoxyphenyl)methanol was not provided.

In the completed question that has the total mass or the values to obtain the total mass, the formula mentioned earlier should be used.

Answer:

4

Explanation:

pH scale of acidic is 4.

Answer: 4

Explanation:

Answer:

TRUE!

Explanation:

Answer:

compounds

Explanation:

It is a substance formed when two or more. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of.

Answer:

Brain big big brain

Explanation:

Biggest brain small brain Big brain big stonks

Answer:

Potassium, sulfur, fluorine, barium

The elements that will lose one electron are:

a. sodium

d. Potassium

An element in its natural state has an equal number of protons and electrons, giving it a net charge of zero; however, when an element loses an electron as part of a chemical reaction it becomes positively charged, or oxidized.

Out of the given options, sodium and potassium looses one electron and attains a positive charge leading to the formation of cation. While Fluorine and chlorine gains one electron and attains a negative charge leading to the formation of anion.

Thus, correct options are a and d.

Find more information about Cations here:

brainly.com/question/14309645

Answer:

C

Explanation:

I did it on usatestprep

Answer:

During a phase change no chemical bonds are broken. Atoms are not rearranged because a phase change is a physical change rather then a chemical change. However, intermolecular forces are almost entirely removed from the liquid since the intermolecular forces are what cause the liquid to be a liquid.

Explanation:the nature of the intermolecular forces (IMF) will not change when the state changes from solid to liquid, however, the number of IMF changes.

Answer:

d = 1.53 g/mL

Object will sink into water

Explanation:

Given data:

Mass of object = 14.8 g

Initial volume of water = 25.0 mL

Final volume after adding object = 34.7 mL

Density of object = ?

Density of water = 1.00 g/mL

Solution:

Volume of object = Total volume - volume of water

Volume of object = 34.7 mL - 25.0 mL

Volume of object = 9.7 mL

Density of object;

d = mass/volume

d = 14.8 g /  9.7 mL

d = 1.53 g/mL

The density of water is 1.00 g/mL which means object is heavier than water thus object will sink into the water. The object with density less than water are float in it.

The question is incomplete, the complete question is;

Which of the following aspects of biotechnology is Not considered to be a moral or ethical issue?

a.research and testing on animals

b.cloning living material

c.reducing research cost

d.damaging the environment

Answer:

c.reducing research cost

Explanation:

Ethical issues arise when a particular course of action is at odds with the generally acceptable moral standard in the society.

Research and testing on animals is contested as an ethical issue by animal rights activists.

Cloning living material  is prohibited among some sections of society and is also being contested as an ethical issue.

Damaging the environment the environment owing to biotechnology research is generally regarded as an ethical issue.

However, reducing research cost is highly acceptable in any research. It does not pose an ethical issue.

Answer:

Glaciers moving rocks and soil through a valley

Explanation:

The definition of Erosion is "the process of eroding or being eroded by wind, water, or other natural agents". Which in turn means the movement of glaciers is causing erosion on the local valley.

the last one

Explanation:

Answer:

pH = 13.11

Explanation:

NaOH reacts with HCl to produce H2O and NaCl. pH depends of this reaction. The reactant in excess determine the pH of the solution:

NaOH + HCl → H2O + NaCl

1 mole of NaOH reacts with 1 mole of HCl

To determine limiting reactant we need to find moles of each reactant:

Moles NaOH:

0.011L * (0.800 mol / L) = 0.0088 moles NaOH

Moles HCl:

0.003L* (0.200mol / L) = 0.0006 moles HCl

That means limitng reactant is HCl and moles in excess of NaOH are:

0.0088moles NaOH - 0.0006 moles = 0.0082 moles NaOH =

0.0082 moles OH⁻

In 11.00mL + 50.00mL + 3.00mL = 64.00mL = 0.06400L

[OH-] = 0.0082 moles OH- / 0.064L = 0.1281M OH-

pOH = -log [OH-] = 0.89

pH = 14 - pOH

Answer:

λ = 4.46 x 10⁻⁷ m = 446 nm

Explanation:

Applying Law of Conservation of Energy in this condition, we will get the following equation:

Total Energy of Combined Photons = Energy of 1st Photon + Energy of 2nd Photon

hc/λ = hc/λ₁ + hc/λ₂

hc/λ = hc(1/λ₁ + 1/λ₂)

1/λ = 1/λ₁ + 1/λ₂

where,

λ = wavelength of combined photon = ?

λ₁ = wavelength of 1st photon = 853 nm = 8.53 x 10⁻⁷ m

λ₂ = wavelength of 2nd photon = 935 nm = 9.35 x 10⁻⁷ m

Therefore,

1/λ = 1/(8.53 x 10⁻⁷ m) + (9.35 x 10⁻⁷ m)

1/λ = (0.1172 x 10⁷ m⁻¹) + (0.1069 x 10⁷ m)

1/λ = 0.2241 x 10⁷ m⁻¹

λ = 1/(0.2241 x 10⁷ m⁻¹)

λ = 4.46 x 10⁻⁷ m = 446 nm

Answer:

446

Explanation:

Answer:

ill help but i cant see the problem

Explanation:

The molarity of the unknown acid : 1.18 M

Titration is a procedure for determining the concentration of a solution by reacting with another solution that is known to be concentrated (usually a standard solution). Determination of the endpoint/equivalence point of the reaction can use indicators according to the appropriate pH range

Titration formula

M₁V₁n₁=M₂V₂n₂

monoprotic acid⇒n₁=1

NaOH monoprotic base⇒n₂=1

[tex]\tt M_1\times 15=1.25\times 14.16\\\\M_1=1.18~M[/tex]

Explanation:

Physical properties of matte tells us everything about a substance when no change is occurring to its constituents.

Such properties are best observed with our senses. Also, physical properties can be observed using equipment in the laboratory or some apparatus.