What is the frequency of electromagnetic radiation having a wavelength of 3.27 ✕ 10-8 m?

s-1 What type of electromagnetic radiation is this?

Answers

Answer 1
Hello There!

The frequency is 91.74 MHz.
It is UltraViolet Radiation.

Hope This Helps You!
Good Luck :)

Related Questions

The half life of 226/88 Ra is 1620 years. How much of a 220 g sample of 226/88 Ra will be left after 10 half lives?

Answers

Given:
Half-life = 1620 years
Original mass, m₀ = 220 g

The decay equation is of the form
[tex]m(t) = m_{0} e^{-kt}[/tex]
where 
t = time, years
k = constant

At half-life, m = 0.5m₀ and t = 1620. Therefore
[tex]e^{-1620k} = 0.5 \\\\ -1620k = ln(0.5) \\\\ k = - \frac{ln(0.5)}{1620} =4.2787 \times 10^{-4}[/tex]

When t = 10 half-lives = 16200 years, obtain
[tex]m = (220 \, g) e^{-4.2787 \times 10^{-4}*16200}=0.2148 \, g[/tex]

Answer: 0.215 g (nearest thousandth)

Define physical change and chemical change and give examples of each type of change

Answers

Physical change does not change the composition of the substance for example: water to ice, evaporation of gasoline

Chemical change does change the composition of the substance for example: leaves changing color in fall, when you burn wood or gasoline

Final answer:

A physical change involves no bonds being broken or formed and the properties of the substances remain the same. Examples of physical changes include dissolving sugar in water and melting ice. A chemical change occurs when one or more substances change into different substances with different properties. Examples of chemical changes include burning wood and rusting of iron.

Explanation:

Physical Change

Physical changes are changes in which no bonds are broken or formed. This means that the same types of compounds or elements that were there at the beginning of the change are there at the end of the change. Because the ending materials are the same as the beginning materials, the properties (such as color, boiling point, etc.) will also be the same. Physical changes involve moving molecules around, but not changing them. Some types of physical changes include:

Dissolving sugar in waterMelting iceStretching a rubber band

Chemical Change

Chemical changes occur when one or more substances change into different substances. During a chemical change, new substances are formed with different properties. Chemical changes are often harder to reverse than physical changes. Some examples of chemical changes include:

Burning woodRusting of ironCooking food

Classify each of these soluble solutes as a strong electrolyte, a weak electrolyte, or a nonelectrolyte. solutes formula nitric acid hno3 lithium hydroxide lioh hydrofluoric acid hf ammonia nh3 potassium chloride kcl ethanol c2h5oh glucose c6h12o6

Answers

For a solute to be a strong electrolyte, the compound must almost completely dissolve into ions. Weak electrolytes only dissolve partially into ions. While nonelectrolytes do dissolve, none of the products are ions. Strong Electrolytes: Nitric Acid (HNo3), Potassium Chloride (KCl), Lithium Hydroxide (LiOH) Weak Electrolytes: Ammonia (NH3), Hydrofluoric Acid (HF) Nonelectrolytes: Ethanol (C2H5OH), Glucose (C6H12O6)

Final answer:

Nitric acid and lithium hydroxide are classified as strong electrolytes, meaning they fully dissociate into ions in solution. Hydrofluoric acid and ammonia are weak electrolytes, partially dissociating into ions. Ethanol and glucose are nonelectrolytes, dissolving without forming ions.

Explanation:

When classifying solutes as strong electrolytes, weak electrolytes, or nonelectrolytes, we examine how they dissociate in water. A strong electrolyte dissociates completely into ions, a weak electrolyte only partially dissociates, and a nonelectrolyte does not dissociate at all in solution.

Nitric acid (HNO3) is a strong electrolyte because it dissociates completely into H+ and NO3- ions in aqueous solution.Lithium hydroxide (LiOH) is also a strong electrolyte, as it dissociates into Li+ and OH- ions when dissolved in water.Hydrofluoric acid (HF) is a weak electrolyte because it only partially dissociates into H+ and F- ions.Ammonia (NH3), when dissolved in water, forms ammonium (NH4+) and hydroxide (OH-) ions, but because the reaction is reversible and the degree of dissociation is not complete, it is also considered a weak electrolyte.Potassium chloride (KCl) is a strong electrolyte that fully dissociates into K+ and Cl- ions.Ethanol (C2H5OH) and glucose (C6H12O6) are both nonelectrolytes; they dissolve as molecules without forming ions in aqueous solution.

The molecular structure of water contains two atoms of hydrogen and one atom of oxygen. When water reaches its boiling point and turns into water vapor, what happens to its molecular structure?

A. It remains the same
B. It changes the ratio of atoms
C. It forms bigger molecules
D. It forms lighter molecules

Thanks for helping! x

Answers

It remains the same . The molecules are further apart thats all.

A student calculates the density of iron as 6.80 g/cm3 using lab data for mass and volume. a handbook reveals that the correct value is 7.86 g/cm3.what is the percent error?

Answers

The student's measurement is 13.486% less than the true value. The percent error is 13.486%.

Given information:

Measured value = 6.80 [tex]\rm \frac{g}{cm^3}[/tex]

True value = 7.86 [tex]\rm \frac{g}{cm^3}[/tex]

Percent error is a measurement of the discrepancy between an experimental or estimated value and a true or accepted value.

The percent error is calculated using the following formula:

[tex]\rm Percent \ error = |\frac{(measured \ value - true\ value)}{true \ value}| \times 100[/tex]

In this case, the measured value is 6.80 g/cm3 and the true value is 7.86 g/cm3. So, the percent error is:

[tex]\rm Percent \ error = |\frac{(6.80 - 7.86)}{7.86}| \times 100%[/tex]

Percent error = -13.486005089058532 %

The negative sign indicates that the measured value is less than the true value. So, the percent error is 13.486%. The student's measurement is 13.486% less than the true value.

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Final answer:

The percent error in the calculated density of iron compared to the actual value is approximately 13.49%. The correct density of iron is 7.86 g/cm³, which can be converted to 7860 kg/m³ for different unit requirements.

Explanation:

The student is asking how to calculate the percent error in the measured density of iron. The percent error can be found using the formula: percent error = |(experimental value - actual value) / actual value| × 100%.

In this case, the experimental value of density is 6.80 g/cm³ and the actual value from the handbook is 7.86 g/cm³. Plugging these values into the formula gives us: percent error = |(6.80 - 7.86) / 7.86| × 100% ≈ 13.49% (rounded to two decimal places).

To convert the correct density of iron from g/cm³ to kg/m³, multiply the density in g/cm³ by 1000 to convert grams to kilograms and by (100)^3 to convert cm³ to m³, resulting in 7.86 g/cm³ × 1000 kg/g × (100)^3 cm³/m³ = 7860 kg/m³.

Gasoline has a density of 0.65 g/ml. what is the mass in kilograms if the volume is 34 l

Answers

Does mass alone provide no information about the amount or size of a measured quantity? No, we need combine mass and volume into "one equation" to determine "density" provides more ... g/mL. An object has a mass of 75 grams and a volume of 25 cc. ... A certain object weighs 1.25 kg and has a density of 5.00 g/mL


Which of the following elements is the most reactive?

Chlorine
Bromine
Fluorine
Helium

Answers

Answer:

Fluorine

Explanation:

According to the Gas Laws, you would changed temperature to change __________.

A. volume and pressure

B. mass and volume

C. weight and volume

D. gravity and volume

Answers

I believe the answer is A. Hope it helps!

Which of these ions have six d electrons in the outermost d subs hell

Answers

We can answer this question by writing the electronic configuration of each ion then choosing the ones having six electrons in outermost d level. The number of electrons in the neutral atom can be known from the periodic table and the number beside the positive sign in the ion indicates how many electrons the atom lost (so you can calculate the number of electrons in the ions easily).
I hope these ions are in your choices:

(1) Os^2+:
It has the following configuration:  [Xe] 4f^14 5d^6

(2) Ru^2+:
It has the following configuration:  [Kr] 4d^6

(3) Zn^2+:
It has the following configuration:  [Ar] 3d^10 

(4) Mn2+:
It has the following configuration:  [Ar] 3d^5 

(5) Tc^2+:
It has the following configuration:  [Kr] 4d^5 

(6) Y^2+:
It has the following configuration:  [Kr] 4d^1 

(7) Fe2+:
It has the following configuration:  [Ar] 3d^6

From the above configurations, the right choices are:
Os^2+
Ru^2+
Fe2+
Final answer:

Ions with six d electrons in the outermost d subshell can be found in transition metal elements such as Cr³+(d³), Co²+(d²), Ni²+(d³), Cu²+(d³), and Zn²+(d¹⁰)

Explanation:

The ions with six d electrons in the outermost d subshell are typically found in the transition metal elements.

For example, the ion with six d electrons in the outermost subshell is Cr³+(d³).

Other ions with six d electrons in the outermost subshell include Co²+(d²), Ni²+(d³), Cu²+(d³), and Zn²+(d¹⁰).

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Is helium a homogeneous or heterogeneous mixture or compound or element?

Answers

Helium is a chemical ELEMENT of the family of noble gases. Its chemical symbol is 'He' which has an atomic number of 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Although it doesn't really react under normal conditions, it is the second most abundant element in the universe.

Elements are pure substances that cannot be broken down any further.

Is the tendency of copper to turn green when exposed to air chemical or physical property?

Answers

Chemical. The copper atoms form new chemical bonds with atoms in the air.
Final answer:

The green color copper turns when exposed to air is due to a chemical change. This happens because of a reaction between copper and the oxygen in the air, resulting in copper(II) oxide, or patina. The resulting green layer passivates, or protects, the copper from further corrosion.

Explanation:

The tendency of copper to turn green when exposed to air is a chemical change. This color change happens due to a chemical reaction between copper and the oxygen in the air, resulting in the formation of a new compound known as copper(II) oxide, which has a characteristic blue-green color, often referred to as patina. This green layer forms a protective barrier, preventing further corrosion of the underlying copper in a process known as passivation.

For instance, the iconic Statue of Liberty has a characteristic green color because it is made of copper, and the copper has reacted with the elements to form a patina or green covering. This is not merely a physical change, but a chemical reaction between copper and the elements in its surroundings.

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What is the volume (in cubic inches) of 3.6 lb of titanium? The density of titanium is 4.51 g/cm3

Answers

Final answer:

To calculate the volume of titanium given its mass, you must first convert the mass from pounds to grams. Apply the formula volume=mass/density and then convert the volume from cubic centimeters to cubic inches. The volume of 3.6 lb of titanium rounded off to the nearest hundredth is 22.07 cubic inches.

Explanation:

To calculate the volume of a substance, you need to use the formula:

volume = mass / density

Given the mass of titanium is 3.6 lb and the density is 4.51 g/cm³, you first need to convert the mass from pounds to grams (since the density is given in g/cm³). This can be done using the conversion factor: 1 lb = 453.59 g.

So, 3.6 lb = 3.6 x 453.59 g = 1632.924 g.

Then, apply the volume formula:

Volume = 1632.924 g / 4.51 g/cm³ = 361.847 cm³

Finally, convert the volume in cm³ to in³, using the conversion factor: 1 cm³ = 0.0610 in³.

So, the volume in in³ is: 361.847 cm³ = 361.847 x 0.0610 in³ = 22.0727 in³

Hence, the volume of 3.6 lb of titanium is approximately 22.07 cubic inches.

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What volume of 0.200 m h3po4 will completely react with 50.00 ml of 0.200 m naoh?

Answers

The complete balanced reaction for this would be:H3PO4  +  3NaOH  --->  Na3PO4  + 3H2OSo we can see that 3 moles of NaOH reacts with 1 mole of H3PO4.
moles NaOH = 0.2 M * 0.05 L = 0.01 molesmoles H3PO4 = 0.01 moles NaOH * (1 mole H3PO4 / 3 moles NaOH) = 0.00333 moles
So the volume required would be:V = 0.00333 moles / (0.200 moles / L)V = 0.0167 L = 16.7 mL

True or false? an element consists of only single atoms of that element.

Answers

false

hope that helps :)

How does an elements period number related to the number of the energy level of its valence electrons?

Answers

There is a direct correlation between the period number and the energy level for valence electrons. For example, the H and He elements, in period 1, have their outer electrons in the energy level "1". This continues down the rows: all the elements in period 2 have their principal energy level as n = 2, period 3 has n = 3, and so on.

In a chemical reaction, 12 grams of sodium must combine with how many grams of chlorine to produce 30 grams of table salt?

Answers

Wouldn't it be 18g of chlorine?

The reaction of 1.250 g k with o2 forms 2.273 g of an oxide of potassium that is used in self-contained breathing devices. determine the formula for this oxide of potassium.

Answers

KO2 First, determine how many moles of potassium you have by looking up the atomic weight. atomic weight of potassium = 39.0983 atomic weight of oxygen = 15.999 1.250 g / 39.0983 g/mol = 0.031970699 mol Now figure out the mass of oxygen by getting the difference between the product mass and the original mass of the potassium 2.273 g - 1.250 g = 1.023 g Moles of oxygen = 1.023 / 15.999 = 0.063941496 mol We now have a ratio of 0.031970699 : 0.063941496 for potassium and oxygen. We want to find a ratio of small integers that closely approximates that ratio. So divide all of the numbers by 0.031970699 (picked because it's the smallest value) and we get 1 : 2.000003 which is pretty darn close to 1 : 2. So the empirical formula for this potassium oxide is KO2

If the density of iron is 7.8 gram and you find an iron nail weighing 15 grams what would volume of the nail be

Answers

If volume = weight divided by density - we already know the weight is 15 grams, and that the density is 7.8 grams. We would plug this into the formula to get 15g divided by 7.8cm3 with proper units and significant figures - we would end up with 1.92cm cubed.

Number 2 how many moles of propane (C3H8) are there in 6.2 g of propane? Correct answer will get brainliest.

Answers

In 1 mole of propane, there are 44 grams
so, X moles = 6.2 grams
Cross multiply: 44x = 6.2
x = 0.14 moles
(In scientific notation) The answer is B

0.1409 moles of propane (C3H8) are present in 6.2g of propane.

What is propane?Propane is an alkane with chemical formula of C3H8.The molecule of propane is made of three carbon atoms and eight hydrogen atoms.

Grams to mole conversion:Multiply the number of atoms by the atomic weight for each element in the compound.Add all of your answers to find the molar mass of the compound.Divide the number of grams of the compound by the molar mass of the compound to find the number of moles.

Atomic mass of propane is 44.1g

6.2g of C3H8 ( 1mol C3H8/44.1g C3H8 )

= 0.1409 mol C3H8.

Hence, option B is the answer.

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Which of the following will hold its shape?

A. gas

B. solid

C. liquid

D. plasma

Answers

The answer is B.solid. Hope it helps!

Answer:

Solid

Explanation:

A solid will retain its shape; the particles are not free to move around.

What color did the bromothymol blue indicator turn when it was added to the test tube containing citric acid?

Answers

Yellow bromothymol blue is an indicator solution that is yellow in color for solutions with a pH of 6.0 or lower and blue in solutions with a pH of 7.6 or higher. Since citric acid is an acid, the pH was lower than 6.0 and the solution turned yellow. Pure citric acid has a pH of 2.2.

What is minimum volume of oxygen required to react with 42.5 g of aluminum in the synthesis of aluminum oxide at stp?

Answers

26.833 liters

Aluminum oxide has a formula of Al₂O₃, which means for every mole of aluminum used, 1.5 moles of oxygen is required (3/2 = 1.5).

Given 42.5 g of aluminum divided by its atomic mass (26.9815385) gives 1.575 moles of aluminum.

Since it takes 1.5 moles of oxygen per mole of aluminum to make aluminum oxide, you'll need 2.363 moles of oxygen atoms.

Each molecule of oxygen gas has 2 oxygen atoms, so the moles of oxygen gas will be 2.363/2 = 1.1815

Finally, you need to calculate the volume of 1.1815 moles of oxygen gas.
1 mole of gas at STP occupies 22.7 liters of volume. Therefore,

1.1815 * 22.7 = 26.8 liters of oxygen gas.

How do the crystallization and settling of the earliest formed minerals affect the composition of the remaining magma?

Answers

Final answer:

The process of early mineral formation involves their crystallization and settling, reducing their amount in the remaining magma. This changes the magma's composition, making it richer in lighter elements leading to the formation of different minerals.

Explanation:

The crystallization and settling of the earliest formed minerals is a process called fractional crystallization. This affects the composition of the remaining magma significantly. As the early forming minerals, usually heavier ones like olivine and pyroxene, crystallize, they often sink towards the bottom due to their higher density. This reduces the amount of these components in the remaining magma, essentially changing its composition. The leftover magma typically becomes gradually enriched in lighter elements, such as silicon, aluminum, potassium, and sodium, leading to the formation of different minerals such as feldspars and quartz.

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The crystallization and settling of early-formed minerals in magma lead to changes in the composition of the remaining melt, resulting in the formation of different igneous rock types.

The crystallization and settling of early-formed minerals within magma significantly influence the remaining melt's composition in a process known as fractional crystallization. As magma cools, minerals with higher melting points crystallize first, gradually removing them from the molten portion. These early crystallizing minerals, often denser than the remaining magma, tend to settle to the magma chamber's bottom.

This settling process results in the depletion of certain elements and compounds from the melt, making it more evolved or differentiated. The remaining magma continues to cool and may form late-crystallizing minerals with a composition reflecting this evolution. The end result is the formation of igneous rocks with distinct mineral compositions, influenced by the sequential crystallization and settling of minerals.

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The chemical formula for a molecule that contains two chlorine c1 atoms is

Answers

The chemical formula for a molecule that contains two chlorine c1 atoms is Diatomic Molecule
compound should be the answer .3.

Why is the periodic table such as useful tool for chemist?

Answers

The periodic table is useful tool for chemist since we can see what is the atomic and mass number for each atom.

Atomic number is equal to how many protons and electrons in it

Mass number is equal to protons + Neutrons.

Jason noticed that his flashlight stopped working. He solved the problem by using the scientific method. Arrange the steps he followed in the correct order in the flowchart.


1.He suspects that the batteries could be dead.


2.He notices that his flashlight stopped working.


3.He replaces the batteries in the flashlight with new batteries.


4.His flashlight works again.He writes a note to himself to buy extra batteries.

Answers

Answer:the answer is 2. he noticed that his flashlight stopped working

1. he suspected that the batteries could be dead

3. he replaces the batteries in the flashlight with new batteries

4.his flashlight works again. he writes a note to himself to buy extra batteries

Explanation:

The correct order of steps followed by Jason with respect to the scientific method would be 2, 1, 3, and 4.

The scientific method is a rational order to steps through which phenomena are understood. The steps are;

observationformation of hypothesistesting of the hypothesis by experimentsconclusion

Thus, in the case of Jason:

He notices that his flashlight stopped working - observationHe suspects that the batteries could be dead - hypothesisHe replaces the batteries in the flashlight with new batteries - experimentationHis flashlight works again. He writes a note to himself to buy extra batteries - conclusion

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Which of the following measurements is equal to 2.3 dL?

23 L
2,300 cL
23,000 mL
230,000 µL

Answers

Which of the following measurements is equal to 2.3 dL?

23 L

The correct measurement equal to 2.3 dL is 230,000 µL.

To find the equivalent measurement, we need to understand the relationship between different units of volume in the metric system. The prefixes used in the metric system are as follows:

- deci- (d) means one-tenth (1/10)

- centi- (c) means one-hundredth (1/100)

- milli- (m) means one-thousandth (1/1000)

- micro- (µ) means one-millionth (1/1000000)

Now, let's convert 2.3 dL to liters, then to centiliters, milliliters, and micro liters:

1. Since 1 deciliter (dL) is equal to 0.1 liters (L), we have:

[tex]\[ 2.3 \text{ dL} = 2.3 \times 0.1 \text{ L} = 0.23 \text{ L} \][/tex]

2. To convert liters to centiliters (cL), we know that 1 L is equal to 100 cL:

[tex]\[ 0.23 \text{ L} = 0.23 \times 100 \text{ cL} = 230 \text{ cL} \][/tex]

3. To convert liters to milliliters (mL), we know that 1 L is equal to 1000 mL:

[tex]\[ 0.23 \text{ L} = 0.23 \times 1000 \text{ mL} = 230 \text{ mL} \][/tex]

4. To convert liters to micro liters (µL), we know that 1 L is equal to 1,000,000 µL:

[tex]\[ 0.23 \text{ L} = 0.23 \times 1,000,000 \text{ µL} = 230,000 \text{ µL} \][/tex]

Given these conversions, we can now match the equivalent measurement to the options provided:

- 23 L is incorrect because 2.3 dL is equivalent to 0.23 L, not 23 L.

- 2,300 cL is incorrect because 2.3 dL is equivalent to 230 cL, not 2,300 cL.

- 23,000 mL is incorrect because 2.3 dL is equivalent to 230 mL, not 23,000 mL.

- 230,000 µL is correct because 2.3 dL is equivalent to 230,000 µL.

Therefore, the correct answer is 230,000 µL.

A salt crystal has a mass of 0.17 mg . how many nacl formula units does it contain?

Answers

1. Calculate the mass of the formula unit (fu). Na= 22.990 g/mol Cl= 35.453 g/mol so total = 22.990 g/mol + 35.453 g/mol = 58.443 g/mol 1 mol = 6.02 x10^23 formula units, so (58.443 g/mol)*(1 mol/6.02x10^23 fu)= 9.7x10^-23 2. Convert mass to grams: (0.17 mg)*(1 g/1000 mg) = 0.00017 g 3. Calculate number of formula units: 0.00017 g x (1 fu/9.7x10^-23 g) = 1.8x10^18 Or more simply: (.00017 g) * (1 mol/58.443 g) * (6.02x10^23 fu/1mol) = 1.8x10^18

Which elements make up 96.3% of living things?

Answers

Carbon, nitrogen, oxygen, and hydrogen

Determine the mass of 18.7ml of rubbing alcohol with a density of 0.79 g/ml?

Answers

23.67 g unless you're rounding to significant figures than it's 24 g

Answer:

The mass of the rubbing alcohol is 14.77 g

Explanation:

The formula to be used here is that of density which is shown below

Density = Mass ÷ volume

The density of the rubbing alcohol (also known as isopropyl alcohol) is given in the question as 0.79 g/ml while the volume of same is given as 18.7ml. The mass of this rubbing alcohol is the unknown (which we can derive from the formula given earlier).

Hence,

Mass = Density × volume

Mass = 0.79 × 18.7

Mass = 14.77 g

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