Which is a common use for a type of electromagnetic radiation?
A tanning bed uses microwaves.
Water purification uses radio waves.
Thermal imaging uses infrared waves.
Weather radar uses ultraviolet waves.

Answer:

Using energy.

Explanation:

The net force of the runner, given the data from the question is 280 N

From the question given above, the following data were obtained:

The net force of the runner can be obtained as illustrated below:

Net force = Exerting force - resistance force

Net force = 325 - 45

Net force = 280 N

From the calculation made above, we can conclude that the runner's net force is 280 N

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The net force of the runner would be 280 N.

Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!

Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"

h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w

0.6066 moles of water are produced by complete ammoxidation of 145 g of o-xylene.

Number of moles are calculated by dividing the mass by the molar mass of the substance.In the reaction between o-xylene ,ammonia and oxygen pthalonitrile  is produced.

Here, the number of o-xylene is calculated by the above mentioned formula which is 1.365 moles.Then, as per stoichiometry and balanced chemical equation ,

1.365 moles of o-xylene×8 moles of water/1 mole of xylene ×18 g water

=0.6066 moles

Thus,0.6066 moles of water are produced from 145 g of o-xylene.

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Answer:

Solid : The intermolecular space is very less

Liquid : The intermolecular space is fairly more than in solids

Solid : It has a fixed shape

Liquid : It has a fixed volume but shape changes according to where it is placed

Solid : eg : Books

Liquid : eg : water

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Thank You!!

Answer:

Liquids have the following characteristics:

No definite shape (takes the shape of its container).

Has definite volume.

Particles are free to move over each other, but are still attracted to each other

Explanation:

ye

Explanation:

Oxidation of aldehyde yields carboxylic acid.

a ketone

This is incorrect

b primary alcohol

This is incorrect.

c carboxylic acid

This is the correct option

d. secondary alcohol

This is incorrect.

e. tertiary alcohol

This is incorrect

Oxidation of aldehyde yields carboxylic acid. An aldehyde gains oxygen and loses hydrogen during the oxidation process

A chemical reaction known as oxidation involves the loss of electrons or an increase in an element, atom, or compound's oxidation status. When a material reacts with oxygen, it frequently happens, but it can also involve other chemical substances or elements that serve as electron acceptors.

An aldehyde gains oxygen and loses hydrogen during the oxidation process, creating a carboxylic acid as a byproduct. Typically, oxidising substances like potassium dichromate or potassium permanganate are used to carry out this process in an acidic or alkaline media.

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Answer:

4 moles of glucose = 4 x 6.022 x 10^23 = 2.4088 x 10^24 molecules of glucose.

There are 2.4088 x 10²⁴ atoms in 4 moles of glucose C₆H₁₂O₆

1 mole of any gas is defined as the number of  atoms, molecules or ions present in the gas. 1 mole of any gas equals to 6.022 x 10²³ atoms , ions or molecules . 6.022 x 10²³ is known as avogadro's number.

We need a conversion factor that will converts from moles of glucose, C₆H₁₂O₆ to molecules of glucose.

That is, one mole of any substance contains 6.022 x 10²³ molecule of that substance.

4moles of glucose = 4 x 6.022 x 10²³ = 2.4088 x 10²⁴ molecules of glucose.

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Answer:

The male cones appear on the trees in the spring time.  The male cones are smaller than the female cones that we typically think of when we think of pine cones.  These cones are softer and are only on the trees in the spring.  After they release their pollen they die away and disappear.

Explanation:

Answer:

To determine the rate law from a table, you must mathematically calculate how differences in molar concentrations of reactants affect the reaction rate to figure out the order of each reactant. Then, plug in values of the reaction rate and reactant concentrations to find the specific rate constant.

Explanation:

hope it is helpful for you

Answer:

Watts are a measurement of power, describing the rate at which electricity is being used at a specific moment. For example, a 15-watt LED light bulb draws 15 watts of electricity at any moment when turned on. Watt-hours are a measurement of energy, describing the total amount of electricity used over time.

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Answer: True

Watts are a measurement of power, used in light bulbs and other electricity. It is also measured as candela (C) in SI Units. The answer to the question is true because of this measurement.

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Answer:

A

Explanation:

have a great day!!!!!!!!

Taking into account the definition of atomic number, The atomic number of an atom is the number of protons in the nucleus.

All atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them. Protons are positively charged, neutrons are neutrally charged, and electrons are negatively charged (electrons).

The atomic number of a chemical element is the total number of protons that each atom of that element has and is symbolized by the letter Z.

A neutral atom has the same number of protons in the nucleus and electrons in the orbitals, so the atomic number also indicates the number of electrons.

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Answer:

The rates of decay of radioactive elements

Explanation:

The age of a rock in years is called its absolute age. Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included.

Oxidation in chemistry occurs when the atoms of an element lose electrons and the oxidation state of the element increases while reduction occurs when the atom of an element gains electrons and reduces the oxidation number.

The atom being reduced is the oxidizing agent while the atom being oxidized is the reducing agent.

Oxidation number is the hypothetical charge of an atom within a molecule. The oxidation number of an element can be calculated as follows;

2x - 2(5) = 0

2x - 10 = 0

2x = 10

x = 5

2x - 6 = 0

2x = 6

x = 3

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Based on the given bright-line spectra and the observed wavelengths in the mixture's spectrum, the elements G and J are the ones present in the mixture.

From the given bright-line spectra and the spectrum of the mixture, we can determine the elements present in the mixture by comparing the specific wavelengths observed. Examining the bright-line spectra, we can identify that G has a distinct wavelength at 650 nm, J at 600 nm, L at 550 nm, and M at 500 nm.

Looking at the spectrum of the mixture, we can observe two prominent wavelengths, 650 nm and 600 nm. These correspond to the wavelengths of G and J, respectively. Since the spectrum of the mixture does not exhibit the wavelengths specific to L (550 nm) or M (500 nm), we can conclude that only G and J are present in the mixture.

Therefore, based on the given bright-line spectra and the observed wavelengths in the mixture's spectrum, the elements G and J are the ones present in the mixture.

This analysis relies on the principle that each element has characteristic wavelengths at which they emit light. By comparing the observed wavelengths in the mixture's spectrum with those of the individual elements, we can determine the elements present in the mixture.

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In \(\rm 4\;NH_3\), the 4 has been the coefficient of the compound and represents the number of molecules of ammonia.

\(\rm NH_3\) has been a compound of nitrogen and hydrogen. The compound has been a covalent compound, formed by the sharing of electrons in between nitrogen and hydrogen.

The compound has been consisted of 1 nitrogen atom and 3 hydrogen atoms. The hydrogen atoms bonding results in the completion of the octet of the nitrogen and provides stability to the compound.

While writing the chemical equation, the coefficient of the compound has been describing the number of molecules present in the reaction. In \(\rm 4\;NH_3\), the 4 has been the coefficient of the compound and represents the number of molecules of ammonia.

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Answer:

The molar mass of atoms of an element is given by the standard relative atomic mass of the element multiplied by the molar mass constant

Explanation:

Answer:

to protect it from harm

Explanation:

rate He = 6 x rate SF₆

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  

the effusion rates of two gases = the square root of the inverse of their molar masses:  

\(\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }\)

or  

\(\rm M_1\times r_1^2=M_2\times r_2^2\)

M He = 4 g/mol

M SF₆ = 146 g/mol

\(\tt \dfrac{r_{He}}{r_{SF_6}}=\sqrt{\dfrac{146}{4} }=6.04\approx 6\\\\r_{He}=6~r_{SF_6}\)

The common logarithm by exponentiating all sides with base 10 we obtain [H+] = 10pH. In a solution with a pH near 2, the pOH is 12, the hydrogen ion concentration is 10-2 M, and the hydroxide ion concentration is 10-2 M.

The negative logarithm of the hydrogen ion concentration is used to calculate the pH of a solution. Change the hydrogen ion's value in the equation above. Hence, the pH of [10 - 8] 6.98 M HCl solution.

A solution with such a concentration of hydroxyl ions of 1012 M has a pH of 2. As the pOH is indeed the numerical expression of the OH- ion concentration, such a solution does have a pOH of 12. As the sum of the pH & pOH must equal 14, the pH must be 2.

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The options that affect the amount that the freezing point is lowered by the addition of the solute include :

The increasing of a solvent's boiling point as a result of the addition of a solute is known as boiling point elevation. Similar to freezing point depression, adding a solute lowers the freezing point of a solvent. In actuality, a solvent's freezing point drops as its boiling point rises.

Any solvent's freezing point will be lowered by the presence of a solute; this action is known as freezing-point depression. The fact that the solute is present in the liquid solution but not in the pure solid solvent is crucial to understanding this phenomenon.

This includes the compound being ionic or the solubility of the solvent.

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Answer:

Carbon moves from the atmosphere to plants. ...

Carbon moves from plants to animals. ...

Carbon moves from plants and animals to soils. ...

Carbon moves from living things to the atmosphere. ...

Carbon moves from fossil fuels to the atmosphere when fuels are burned. ...

Carbon moves from the atmosphere to the oceans.

Explanation:

Answer:

step 4 , 2 , 3

Explanation:

Answer:

Latitude

ocean currents

Wind

Elevation

Water

Answer:

\(m=406.26g\)

Explanation:

Hello,

In this case, since the density is defined as the degree of compactness of a substance and it mathematically defined as the ratio of the mass and volume:

\(\rho = \frac{m}{V}\)

By knowing that its density is 1.11 g/mL, the mass in 366 mL is:

\(m=\rho V=366mL*1.11\frac{g}{mL}\\ \\m=406.26g\)

Regards.

Answer:

Mass = 14.876 g

Explanation:

Given data:

Volume of gold = 0.77 cm³

Mass of gold = ?

Solution:

Density of gold from literature is 19.32 g/cm³

Formula:

d = m/v

d = density

m = mass

v = volume

by putting values,

19.32 g/cm³ = m/ 0.77 cm³

m = 19.32 g/cm³ × 0.77 cm³

m = 14.876 g

From the equation of the reaction; for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.

A chemical reaction involves the transformation of one chemical specie into another. The reaction is not shown here hence the question is incomplete.

However, the reaction should be of the sort; Cu + 2AgNO3 ---> Cu(NO3)2 + Cu. Thus, for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.

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250 L of 5.0% w/v glucose solution can be prepared using 125 g of glucose.

w/v = [ mass of solute (g) / volume of solution (mL) ] × 100

5.0 % w/v = [ 125 g / volume of solution (mL) ] × 100

volume of solution (mL) = [ 125 g / 5.0 % w/v ] x 100

volume of solution (mL) = [ 125 g / (5.0 / 100) ] x 100

volume of solution (mL) = [ 125 g / 0.05 ] x 100

Explanation:

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