A wave has a wavelength of 12 mm and a frequency of 6 hertz. What is its speed?

Answers

Answer 1

Wavelength = 12mm = 0.012 meter
Frequency = f = 6 Hz
Speed = v = ?

Speed of a wave is the product of its wavelength of Frequence.

So,

Speed = Frequency x Wavelength

v = 6 x 0.012 = 0.072 m/s

Thus, the speed of the wave will be 0.072 meter per second

Related Questions

A 5.00 L sample of helium at STP expands to 20.0 L. What is the new pressure on the gas?

Answers

Answer is: the new pressure on the gas is 0.25 atm or 25.33 kPa.
Boyle's Law: the pressure volume law - volume of a given amount of gas held varies inversely with the applied pressure when the temperature and mass are constant.
p₁V₁ = p₂V₂.
1 atm · 5.00 L = p₂ · 20.0 L.
p₂ = 1 atm · 5 L ÷ 20.0 L.
p₂ = 0.25 atm, but same amount of helium.

What will be the effect on the amount of gas produced if the experiment is repeated using 0.35g of k?

Answers

Hello there, I believe you are practicing for the AP Chemistry exam. If you are, so am I :)

Anyways, the answer is that some gas will be produced but less than the amount of gas produced by Li.

To understand this, we first need to look at the number of moles we have of each substance. For 0.35 grams of Li, we have an estimated value (I am estimating because the multiple choice of the exam is non calculator) of 0.05 moles. For K however, we have an estimated value of 0.01 moles used.

Now look at the two equations: 2K +3H2O ---> 2H2 + 2K(OH)
2Li +3H2o ---> 2H2 +2Li(OH)
In the question, it specifies that H2 gas is produced as a product. Because both equations produce H2 in a 2:2 ratio (or a simplified ratio of 1:1), 0.05 moles of H2 will be produced for the Li equation, while 0.01 moles of H2 will be produced for the K equation. Therefore, the Li produces more moles of gas than K.

I hope that makes sense. Happy studying :)

The effect on the amount of gas produced if the experiment is repeated using 0.35g of potassium is that less amount of hydrogen gas is produced.

What is the stoichiometry?

Stoichiometry of any reaction gives idea about the amount of species present and before the completion of the reaction.

Chemical reaction with repect to Lithium (Li) and Potassium (K) will be represented as:

2K + 3H₂O → 2H₂ + 2KOH

2Li + 3H₂O → 2H₂ + 2LiOH

From the stoichiometry of the reaction it is clear that 2 moles of K & Li produces 2 moles of hydrogen gas.

Moles will be calculated as:

n = W/M, where

W = given mass = 0.35g

M = molar mass

Moles of 0.35g Li = 0.35 / 6.9 = 0.0507 moles

Moles of 0.35g K = 0.35 / 39 = 0.0089 moles

From the moles of both elements it is clear that lithium will produce more gas.

Hence on replacing lithium with potassium, less gas will be produced.

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What can the size and shape of a sand dune tell you about how it was formed?

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It could tell you how much mass contains inside

Potassium chloride (KCl) is sometimes used to treat low blood potassium levels. Calculate the concentration of a saturated solution of potassium chloride at 20°C. Question continued-?
Hint: The formula for molarity, a common concentration unit, is M = moles/volume of solution expressed in units of mol/L. You will need to convert from grams of KCl to moles. Assume the volume of solution is 100 mL. Show your work!
Info: 36g of KCl is the max 100mL of water could hold at 20°C.

Answers

Molarity is the most convenient way to express concentration.

Mathematically, molarity is expressed as [tex] \frac{\text{mass of solute(g)}}{\text{gram molecular weight X Volume of solution (l)}} [/tex]

In present case,
mass of solute (KCl) = 36 g
molecular weight of KCl = 74.55 g/mol
volume of solution = 100 ml = 0.1 l

∴ Molarity = [tex] \frac{36}{74.55X0.1} [/tex]
= 4.829 M
Thus, conc. of saturated KCl at 20 oC is 4.829 M

What is the most abundant gas in our atmosphere?
1. oxygen
2. hydrogen
3. nitrogen
4. water

Answers

Nitrogen <---- Itś at 73% of Earths atmosphere.

3. Nitrogen. It's 73% of the Earth's atmosphere.

In the third period of the periodic table sodium is followed by magnesium aluminum silicon and phosphorus which of these elements has the smallest atomic size ?

Answers

Answer:
Phosphorous has the smallest atomic size.

Explanation:
As we know these elements belong to same period means there valence shell is the same. So moving from left to right along the period the shell number remains constant but the number of protons and electrons increases. So, due to increase in number of protons the nuclear charge increases hence attracts the valence electrons more effectively resulting in the decrease of atomic size.

Elements and their atomic radius are as follow,

Magnesium 0.160 nm

Aluminium 0.130 nm

Silicon 0.118 nm

Phosphorus 0.110 nm

If a sample of a certain solution is determined to have a [h3o+][h3o+] concentration of 4.91×10−44.91×10−4 moles/liter, what is its ph? round off your answer to one decimal place.

Answers

pH scale is used to determine how acidic , basic or neutral a solution is. It can be calculated using the following equation
pH = -log [H₃O⁺]
hydronium ion concentration has already been given
[H₃O⁺] = 4.91 x 10⁻⁴ M
pH = -log[4.91 x 10⁻⁴ M]
pH = 3.3
the pH of medium is 3.3

Which must be the same when comparing 1 mol of oxygen, O2, with 1 mol of carbon monoxide has, CO?

Answers

Answer: 1 mol of oxygen, O₂, and 1 mol of CO will have the same number of molecules, and the same number of atoms.

Justification:

Althought the question is too open, other answers may arise, the most remarkable similarity between the two compounds is that both are diatomic.

That means that both molecules oxygen, O₂, and carbon monoxide, CO have two atoms.

So, 1 mol of oxygen, O₂, and 1 mol of CO will have the same number of molecules, and the same number of atoms.

You must remember that 1 mol means a specific number. It is Avogadro's number, which is 6.022 × 10 ²³.

So 1 mol of CO and 1 mol of O₂ are the same number of representative particles: 6.022 ×10²³ molecules eac, and two times that number of atoms each (since each molecule has two atoms).

Which is an acceptable Lewis structure for a diatomic nitrogen molecule?

Answers

Answer:
Acceptable Lewis structure of Diatomic Nitrogen Molecule is as follow,

:N≡N:

Explanation:
The given lewis structure is acceptable because each nitrogen atom has a complete octet and and the formal charge of each nitrogen atom is zero. So those lewis structures which has zero or least formal charges are said to be more stable and acceptable. The formal charge is calculated is,

Formal Charge = # of Valence e⁻s - [# of non-bonded e⁻ + 1/2 # of bonded e⁻]

For N,

Formal Charge = 5 - [ 2 + 6/2]

Formal Charge = 5 - [ 2 + 3 ]

Formal Charge = 5 - 5

Formal Charge = 0

Same result will come for the second N atom.

Final answer:

The Lewis structure for a diatomic nitrogen molecule would indicate a triple bond between the two nitrogen atoms, with each atom having a pair of lone electrons. The concept of resonance doesn't apply to this molecule.

Explanation:

The diatomic nitrogen molecule has a triple bond between the two nitrogen atoms. A Lewis structure, in this context, represents the arrangement of electrons in a molecule. The Lewis structure for N2 would therefore show the nitrogen atoms sharing three pairs of electrons - indicating the triple bond - with each nitrogen atom also having one pair of lone (non-bonding) electrons.

Using the concepts of resonance and electron-pair geometries, it's possible to show that the actual distribution of electrons is an average between various possible Lewis structures. However, the resonance only applies to molecules where it's not possible to depict the molecule's structure using a single Lewis structure, as in the case of nitrogen dioxide (NO2) and related compounds, not diatomic nitrogen.

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explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

Answers

Final answer:

Not all compounds containing hydrogen atoms are classified as Arrhenius acids because they do not release hydrogen ions when dissolved in water. Methane and acetic acid are examples of compounds that contain hydrogen atoms but are not classified as Arrhenius acids.

Explanation:

In order for a compound to be classified as an Arrhenius acid, it must release hydrogen ions (H+) when dissolved in water. However, not all compounds that contain hydrogen atoms are classified as Arrhenius acids because they do not release H+ ions. For example, methane (CH4) and acetic acid (CH3COOH) both contain hydrogen atoms but they are not classified as Arrhenius acids because their hydrogen atoms are not capable of ionizing.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Answers

Diffusion is defined as spreading of molecules of a substance, away from each other, throughout the space.

Effusion is the phenomena of escape of gas molecules through a very small orifice into an evacuated area.

According to Graham's Law, rate of diffusion and effusion is inversely proportional to molecular mass.

Thus, with increase in molecular mass, rate of diffusion and effusion will decrease.

Final answer:

The molar mass of a gas influences its diffusion and effusion rates, according to Graham's law of effusion. Lighter gas molecules diffuse and effuse faster than heavier ones due to their movement speed. The ratios of diffusion and effusion rates, both dependent on the molar mass, remain constant.

Explanation:

The molar mass of a gas significantly affects its diffusion and effusion rates due to the principles identified in Graham's law of effusion. According to this law, the rate of effusion of a gas is inversely proportional to the square root of the mass of its particles. Hence, lighter gas molecules will effuse and diffuse at a faster rate as compared to heavier ones.

Furthermore, the average speed of gas molecules impacts the rate of effusion. As a consequence, heavier gas molecules, which move more slowly due to their larger mass, will diffuse and effuse slower compared to lighter molecules. This is because it is more challenging for heavier molecules to move between the molecules of the substance they are moving through.

Lastly, diffusion and effusion rates both depend on the molar mass of the gas involved. Although their rates are not identical, the ratios of their rates remain consistent. This is another way the molar mass of a gas influences its diffusion and effusion rates.

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How many kj of heat are needed to completely vaporize 1.30 moles of h2o? the heat of vaporization for water at the boiling point is 40.6 kj/mole?

Answers

The Kj of heat that are needed to completely vaporize 1.30 moles of H2O if the heat of vaporization for water is 40.6 Kj/mole is calculated as below

Q(heat) = moles x heat of vaporization)

=1.30 mol x40.6 kj/mol= 52.78 Kj is needed

Explanation:

Heat of vaporization is defined as the amount of heat required to change one mole of a liquid into vapor state without any change in the temperature.

It is known that for 1 mole of water, latent heat of vaporization is 40.6 kJ/mol.

Therefore, heat of vaporization for 1.30 moles will be calculated as follows.

[tex]1.30 moles \times 40.6 kJ/mol[/tex]

= 52.78 kJ

Thus, we can conclude that the 52.78 kJ of heat are needed to completely vaporize 1.30 moles of [tex]H_{2}O[/tex].

calculate the pressure in atm, if 0.00825 moles occupies 174 mL at -15 celcius.

Answers

Answer is: the pressure is 1.12 atm.
n(O₂) = 0.00825 mol, amount of substance.
V = 174 mL ÷ 1000 mL/L = 0.174 L, volume of gas.

T = 15°C = 288.15 K; temperature.
R = 0.08206 L·atm/mol·K, universal gas constant.
Ideal gas law: p·V = n·R·T.
p = n·R·T / V.
p = 0.00825 mol · 0.08206 L·atm/mol·K · 288.15 K / 0.174 L.
p = 1.12 atm.

The pressure is calculated using the Ideal Gas Law. Given the moles, volume in liters, and temperature in Kelvin, the pressure is approximately 0.100 atm. This calculation involves converting units and applying the gas constant.

To calculate the pressure in atmospheres (atm) given the number of moles, volume, and temperature, we need to use the Ideal Gas Law formula:

PV = nRT

Here:

P is the pressure in atm.V is the volume in liters. Since the given volume is in milliliters (174 mL), we need to convert it to liters:

174 mL × 0.001 L/mL = 0.174 L.

n is the number of moles, which is 0.00825 moles.R is the ideal gas constant, which is 0.0821 (L atm)/(K mol).T is the temperature in Kelvin. We need to convert the temperature from Celsius to Kelvin:

T = -15 °C + 273 = 258 K.

Now, we substitute the known values into the Ideal Gas Law equation:

P × 0.174 L = 0.00825 moles × 0.0821 (L atm)/(K mol) × 258 K

Simplify and solve for P:

P = (0.00825 moles × 0.0821 × 258) / 0.174

P ≈ 0.100 atm

A gas is contained in a thick walled balloon. when the pressure changes from 417 mm hg to 576 mm hg, the volume changes from ____ L to 4.78 L and the temperature changes from 497 K to 386 K

Answers

Initial volume is 8.5. Could I get best answer??

Answer: 8.5

Explanation:

"what is the concentration of positive charge and mass in rutherford's atomic model called?"

Answers

The concentration of positive charge and mass in Rutherford's atomic model is called the nucleus. Rutherford's experiments involving the use of alpha particle beams directed onto thin metal foils demonstrated the existence of the nucleus. The nucleus of an atom contains positively charge particles called protons and other uncharged particles called neutrons. According to this model most volume of an atom is made up of an empty space.

Calculate h3o+ in an aqueous solution that is 0.10M NaNO2 and 0.055M HNO2

Answers

Answer is: concentration of hydronium ions is 8.13·10⁻⁴ M.
c(HNO₂) = 0.055 M.
c(NaNO₂) = 0.10 M.
Ka(HNO₂) = 4.5·10⁻⁴.
This is buffer solution, so use Henderson–Hasselbalch equation:
pH = pKa + log(c(NaNO₂) ÷ c(HNO₂)).
pH = -log(4.5·10⁻⁴) + log(0.055 M ÷ 0.10 M).
pH = 3.35 - 0.26.
pH = 3.09.
[H₃O⁺] = 10∧(-3.09).
[H₃O⁺] = 8.13·10⁻⁴ M.

In the reaction 2co(g) + o2(g) â 2co2(g), what is the ratio of moles of oxygen used to moles of co2 produced? select one:

Answers

2CO(g) + 1O2(g) ---> 2CO2(g)
2 mol CO 1 mol O2 2 mol CO2

1 mole O2 to 2 moles CO2, or
1 mole O2 : 2 moles CO2.

Which phrase describes an al atom?
a.a negatively charged nucleus, surrounded by negatively charged electrons
b.a negatively charged nucleus, surrounded by positively charged electrons?

Answers

Answer:
None of the given options describe any atom. The phrase which describe an atom is "a positively charged nucleus surrounded by negatively charged electrons".

Explanation:
Atom is a smallest indivisible particle which is made up of many sub particles. The main sub particles are Protons, Neutrons and Electrons. Protons are positively charged, neutrons doesn't carry any charge hence neutral and electrons are negatively charged. Protons and neutrons are present in nucleus, therefore making the nucleus positively charged, while, electrons revolve around the nucleus in orbit hence being negatively charged particles surrounds the positively charged nucleus.

An atom is defined as the microscopic particle having positively charged nucleus around which negatively charged electrons revolve. In aluminum atom, none of the options give are correct.

Aluminum is an atom made up of 13 electrons and 13 protons. In an atom, there are several sub-particles, which are:

Protons are the positively charged sub-particle that are present inside the nucleus.Electrons are the negatively charged sub-particles that revolves around the nucleus. Neutrons does not have any charge, and is found in the nuclei of atoms.

Therefore, the correct statement is that aluminum atom have positively charged nucleus around which electrons revolve. Hence, the given options are incorrect.

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Iron, an important component of the steel used in the construction of buildings, bridges, and railroads, combines with oxygen to form fe2o3, which we recognize as rust. at room temperature, iron

Answers

I don't understand, what you want?

A substance that is not soluble in a polar solvent is

Answers

I believe its a Nonpolar substance.

An element found in another galaxy exists as two isotopes. if 80.0 percent of the atoms have an atomic mass of 80.00 atomic mass units and the other 20.0 percent have an atomic mass of 82.00 atomic mass units, what is the atomic mass of the element?

Answers

relative atomic mass of the element is the weighted average atomic mass of the element with regard to the abundance of the isotopes in nature.
atomic mass of the element is the sum of the products of the isotope mass by the percentage abundance of that isotope
isotope 1 - abundance 80 % - 80.00 a.m.u
isotope 2 - abundance 20 % - 82.00 a.m.u
atomic mass = 80.00 x 80% + 82.00 x 20%
= 64.00 + 16.40 = 80.40 a.m.u
atomic mass of the element is 80.40 a.m.u

Differences in which property allows the separation of a sample of sand and sea water by filteration

Answers

Answer:
Differences in Particle Size allows the separation of a sample of sand and sea water by filtration.

Explanation:
This is a very simple example which can be conducted at home. When Salt dissolved in water is filtered all the solution get passed through filter paper, while solution of sand and water on filtration separates the sand from water. This is because of the particle size. The size of Na⁺ and Cl⁻ ions are very small and can easily pass through the pores of filter paper, while the size of sand particles are very large and fails to pass through the pores of filter paper.

Filtration is a type of process in which components of a mixture are separated based in the size. The sea water and sand can be separated by filtration due to different particle size.

Seawater is a mixture of several substances, including salt, sand, and stones. The substances of seawater can be separated via filtration. The filter paper in this technique separates the substances based on the size of particles.

The filtration separates sand and seawater as:

Seawater and sand are dissolved in each other. When the filtration technique is performed, it separates out the water from sand. The size of the sand particles are larger than the pore size of filter paper, thus, it easily separates the sand from seawater.

Therefore, difference in the particle size allows the separation of seawater and sand.

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Assume that the rate law for a generic chemical reaction is rate = [a][b]3 . what is the reaction order in a, the reaction order in b, and the overall reaction order?

Answers

If the reaction is
X + Y → Products

Then the rate is
R = k[X]ᵃ [Y]ᵇ

Where,
R = the rate of the reaction (mol L⁻¹ s⁻¹)
k = rate constant
[X] and [Y] = concentrations of the reactants (mol L⁻¹)
a = order of the reaction with respect to X
b = order of the reaction with respect to Y
overall reaction order, n = a + b

according to the given rate expression,
rate = [a][b]³

order of the reaction with respect to 'a' is 1
order of the reaction with respect to 'b' is 3

Overall reaction order = 1 + 3
= 4

The order of reaction in a is 1 while the order of reaction in b is 3.

What is order of reaction?

The rate law is obtained from the reaction equation or from experiment. We can determine the order of reaction by summing up the exponents in the rate law as shown in the equation of the rate law.

Now, we have; rate = k[a][b]3, the order of reaction in a is 1 while the order of reaction in b is 3.

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When bismuth-212 undergoes alpha decay, it becomes which of the following?

A asatine-208 + an alpha particle
B lead-210 + an alpha particle
C polonium-210 + and alpha particle
D thallium-208 + and alpha particle

Answers

Answer is: D thallium-208 + and alpha particle.
Nuclear reaction: ²¹²Bi → ²⁰⁸Tl + α (alpha particle).
Alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.

Help Please earth science

Answers

Use the image to determine which of the following statements is true?

1) The granite is younger than unit B.2) Unit B and the granite are the same age.3) The relative ages of teh granite and unit B cannot be determined from the information given.4) Unit B is younger than the granite.

Which reaction may be described as an acid-base neutralization reaction? 1. be(oh)2 + h2so4 → beso4 + 2 h2o 2. ba(oh)2 + 2 licl → bacl2 + 2 lioh 3. naoh + h2o → h3o + + nao− 4. hno2 + h2o → h3o + + no− 2?

Answers

The reaction that describe an acid an acid- base neutralization reaction is

Be(OH)2 + H2SO4 = BeSO4 +2 H2O

Neutralization reaction involve an acid and a base reaction whereby the acid neutralization the base. for the reaction above Be(OH)2 is the base while H2SO4 is the acid thus H2SO4 neutralizes Be(OH)2 to form BeSO4 and H2O

What will most likely happen if a sound wave moves from the air through a solid?

Answers

the wavelength of the associated sound will increase.

Answer:

Explanation:

YOUR WELCOME

A student pours exactly 26.9 mL of HCl acid of unknown molarity into a beaker. The student then adds 2 drops of the indicator and titrates the acid to neutrality using 43.7 mL of 0.13 M NaOH base.
a. Write and balance the neutralization reaction of the acid and base
b. What is the molarity of the acid?

Answers

a.
Acids react with bases and give salt and water and the products.

Hence, HCl reacts with NaOH and gives NaCl salt and H₂O as the products. The reaction is,
HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

To balance the reaction equation, both sides hould have same number of elements.

Left hand side, Right hand side,
H atoms = 2   H atoms = 2
Cl atoms = 1   Cl atoms = 1
Na atoms = 1   Na atoms = 1
O atoms = 1   O atoms = 1

Hence, the reaction equation is already balanced.

b.
Molarity (M)= moles of solute (mol) / Volume of the solution (L)

HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

Molarity of NaOH = 0.13 M
Volume of NaOH added = 43.7 mL
Hence, moles of NaOH added = 0.13 M x 43.7 x 10⁻³ L
= 5.681 x 10⁻³ mol

Stoichiometric ratio between NaOH and HCl is 1 : 1

Hence, moles of HCl = moles of NaOH
= 5.681 x 10⁻³ mol

5.681 x 10⁻³ mol of HCl was in 26.9 mL.

Hence, molarity of HCl = 5.681 x 10⁻³ mol / 26.9 x 10⁻³ L
= 0.21 M

The energy stored in the motion or vibration of molecules in a substance is a definition for
A. heat.
B. work.
C. radioactivity.
D. electromagnetism.

Answers

the answer is A.

A: heat

plz give me brainliest <3

Write a nuclear reaction for the neutron-induced fission of u?235 to produce te?137 and zr?97. how many neutrons are produced in the reaction?

Answers

This is a neutron induced fission, therefore a neutron will be added to the U²³⁵ to cause the reaction, and thus it will be added to the left side. There will be unknown number of neutrons produced and thus we put this on the right hand side.
n₁ + U²³⁵ = Te¹³⁷ + Zr ⁹⁷ + xn1 ( n1 to mean a neutron of mass 1)
To balance the masses on both sides of the equation;
1 + 235 = 137 +97+ x
x = 2
the end reaction will be
n₁ +U²³⁵ = Te¹³⁷ + Zr⁹⁷ + 2 n₁

This is a neutron induced fission, therefore a neutron will be added to the U²³⁵ to cause the reaction, and thus it will be added to the left side. There will be unknown number of neutrons produced and thus we put this on the right hand side.n₁ + U²³⁵ = Te¹³⁷ + Zr ⁹⁷ + xn1 ( n1 to mean a neutron of mass 1)To balance the masses on both sides of the equation;1 + 235 = 137 +97+ xx = 2 the end reaction will ben₁ +U²³⁵ = Te¹³⁷ + Zr⁹⁷ + 2 n₁

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