In the space below draw a model of the atoms that make up a water molecule to show the charges of each of these atoms chemistry

Atoms are the unit of the molecule of the compound. The 3.01 x 10²⁴  atoms of oxygen are present in 5 moles of water and 3 moles of carbon dioxide in the sample.

Atoms are the smallest fundamental unit of the compounds that can be given by Avogadro's number.

For calculating the oxygen atoms in 5 mole water:

If 1 mole = 6.02 × 10²³

Then, 5 moles = 5 ×  6.02 × 10²³

Hence, 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water.

Moles of carbon dioxide in the sample is calculated as:

If 1 mole of carbon dioxide = 6.02 × 10²³ molecules

Then moles in 1.8 x 10²⁴ molecules will be,

(1.8 x 10²⁴ molecules) ÷ (6.02 × 10²³ molecules)  = 3 moles

Hence, 3 moles of carbon dioxide is present in the sample.

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The color of the indicator will correspond to the pH values of either acidic or basic substances.

pH values are values which are obtained from taking the negative logarithm to base ten of the hydrogen ions concentration of a substance.

pH values of acidic substances are less than 7 while the pH of basic or alkaline substances are greater than 7.

An indicator is an organic dye which changes colour according to the pH of a substance.

Examples of indicators are methyl orange and phenolphthalein.

Therefore, the color of the indicator will correspond to pglh values of either acidic or basic substances.

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Answer:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Explanation:

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The Intermolecular force is a type of force which exists between particles in an Ideal gas.

Intermolecular forces are considered weaker attractions that hold molecules in gas close together. This force of attraction is present between molecules or particles.

So we can conclude that the Intermolecular force is a type of force which exists between particles in an Ideal gas.

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Answer:

The molecules cannot be compared without knowing the mass.

Answer:

Frequency of the ultrasonic sound, f=1000kHz=10

6

Hz

Speed of sound in air, V

a

=340m/s

The wavelength (λ

r

) of the reflected sound is given by the relation:

λ

r

=V/f

=340/10

6

=3.4×10

−4

m.

(b) Frequency of the ultrasonic sound, f=1000kHz=10

6

Hz

Speed of sound in water, V

w

=1486 m/s

The wavelength of the transmitted sound is given as:

λ

r

=1486/10

6

=1.49×10

−3

m.

Ion particles are present in water solutions of electrolytes while neutral molecules are present in case of non electrolytes.

Electrolytes are compounds that dissociate into ions when dissolved in a solution, resulting in the solution becoming conductive to electricity. These substances are usually made up of ionic compounds or acids that dissolve in water, producing positively and negatively charged ions. These ions can move freely within the solution and transport electric charge, thereby transforming the solution into a conductor of electricity.

When we talk about water solutions of electrolytes, it's important to note that the solute particles are present in the form of ions. These ions are essentially atoms or molecules that have a net electric charge as a result of gaining or losing electrons. The presence of these charged particles allows for conductivity within the solution, making them capable of carrying an electric charge. Some common examples of electrolytes include table salt (also known as sodium chloride), acids, and bases.

When it comes to solutions in water that contain non-electrolytes, the solute particles are made up of neutral molecules or compounds that lack an overall electric charge and therefore, cannot facilitate electrical conductivity within the solution. Sugar, alcohol, and urea are a few examples of non-electrolytes.

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Answer:

750 g of phosphorus is 750 g of phosphorus

According to the research, the body systems work together to perform a common function through the coordination of endocrine substances and nerve impulses.

They are the different sets of organs that make up the body, collaborating in each case with the fulfillment of some specific type of functions.

This simultaneous and juxtaposed set of systems involves various organs, ducts, tissues and various glands, all coordinated by endocrine substances and nerve impulses, so as to operate more or less autonomously as the case may be.

Therefore, we can conclude that according to the research, the body systems work together to perform a common function through the coordination of endocrine substances and nerve impulses.

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Answer: A fossil will usually have remains or impressions of an animal or plant.

Answer:

the answer is b

Explanation:

trust me

The answer is 125 ml air bubbles come out from under the glass

Charles's Law describes the directly proportional relationship between the volume and temperature (in Kelvin) of a fixed amount of gas, when the pressure is held constant.

V∝T

or express from two volume/temperature points:

[tex]\rm\dfrac{V_{1}}{T_{1}} =\dfrac{V_{2}}{T_{2}}[/tex]

This equation can be used to solve for initial or final value of volume or temperature

under the given condition that pressure and the number of mole of the gas stay the same.

It is given that

V₁ = 500 ml  

T₁= 7 + 273 = 280 K

T₂ = 77+273 = 350 K

​V₂= ?

Substituting the values in the above in the above equation

[tex]\rm\dfrac{500}{280}} =\dfrac{V_{2}}{350}[/tex]

​V₂ =  625 ML

The volume of the glass is still 500 ml,

so, the volume of bubbles is 125 ml.

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Moles of copper

Mass of copper

Now

According to law of conservation of mass

Mass of products=Mass of reactants

The molarity of the solution of H₃PO₄ needed to neutralize the KOH solution is 0.35 M

H₃PO₄ + 3KOH —> K₃PO₄ + 3H₂O

From the balanced equation above,

MaVa / MbVb = nA / nB

(Ma × 10.2) / (0.2 × 53.5) = 1 / 3

(Ma × 10.2) / 10.7 = 1 / 3

Cross multiply

Ma × 10.2 × 3 = 10.7

Ma × 30.6 = 10.7

Divide both side by 30.6

Ma = 10.7 / 30.6

Ma = 0.35 M

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Answer:

99.6 kpa     (or maybe 124.2 kpa  <======see below)

Explanation:

Assuming constant volume:    ( I also assumed +30 C initial temp)

P1/T1  = P2/T2

T2 * P1/T1 = P2              (T must be in K )

(35 + 273.15) * 98 /(273.15 + 30)  = 99.6 kpa

Just in case this was -30 C to start, the answer would be  124.2 kpa

H2SO3 is the correct answer. I understand school is hard, but WORK HARDER!

Answer:

2H2+O2=2H20

Explanation: Since there are 2 Oxygen in the reactants then there must be 2 Oxygen in the products, meaning there is a coefficient of 2 in front of H20 and that makes there be 4 Hydrogen, so adjust the reactants (2 H2)

The pressure of the given moles of propane with the given volume and temperature is 1.024atm.

The Ideal gas law or general gas equation emphasizes on the state or behavior of a hypothetical ideal gas. It states that "the pressure multiplied by volume is equal to moles multiply by the universal gas constant multiply by temperature.

It is expressed as;

PV = nRT

Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.08206 Latm/molK )

Given the data in the question;

PV = nRT

P = nRT / V

P = ( 13mol × 0.08206Latm/molK × 288K ) / 300L

P = 307.23264Latm / 300L

P = 1.024atm

Therefore, the pressure of the given moles of propane with the given volume and temperature is 1.024atm.

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The reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.

The term nuclear reaction  has to do with a reaction in which there is a transformation of the nucleus of an atom.

As such, the reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.

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Answer:

C

Explanation:

Edge 2022

A combustion reaction is a reaction that reacts with oxygen to produce the product. 3.5 moles of methane release - 3115 kJ/mol of heat.  

A combustion reaction is a chemical reaction that involves the burning of the reactant in the presence of the oxygen molecule to release heat.

The balanced reaction of methane combustion is given as:

CH₄(g) + 2O₂ (g) → CO₂(g) + 2H₂O (l), ΔH = -890 kJ/mol

From the reaction, it can be said that 1 mole of methane combusts to produce -890kJ/mol enthalpy.

So, 3.5 moles will produce, 3.5 × -890kJ/mol = - 3115 kJ/mol.

Therefore, 3.5 moles of methane produce - 3115 kJ/mol heat.

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Answer:

D. K3PO4

Explanation:

K3PO4 would dissolve into 3 potassium ions and one phosphate ions thus total of 4 items added in water. Freezing point is depressed by high amounts of stuff. NaCl would add 2 items (one Na and one Cl). Glucose would not break apart, thus 1 item. MgCl2 would break into One Mg and two Cl ions (thus 3 things.)..

Overall, K3PO4 dissolves into most components, thus would depress the freezin point most.

The answer is Ethene.

Produced by heating natural gas.

Answer:

Neither because it’s a longitudinal wave that is supposed to be the answer

Explanation:

Answer:

(a) Oil

Explanation:

Oil is a renewable source, along with natural gas, coal, and nuclear energy.

lmk is this helped you

~rere

Answer:

A. Oil

Explanation:

Oil, along with natural gas, and coal are called fossil fuels and fossil fuels were formed within the Earth from dead plants and animals millions of years ago.

Answer:

Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.

Explanation:

Destructive interference has lesser intensity.

When the trough of Wave A overlaps the crest of Wave B, destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B. Therefore, option C is correct.

Interference is the phenomenon that occurs when two or more waves meet and overlap with each other.

There are two types of interference: constructive interference and destructive interference.

Therefore, option C is correct.

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Answer:

a single bond will share 2 electrons

double will share 4

so triple will share 6

Consider substances that can easily diffuse through the lipid bilayer of the cell membrane, such as the gases oxygen (O2) and carbon dioxide (CO2). These small, fat soluble gasses and other small lipid soluble molecules can dissolve in the membrane and enter or exit the cell following their concentration gradient.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Here we go ~

There are 4 carbon atoms in the chain, so it's prefix should be " But " and there are only sigma bonds, therefore the primary suffix will be " ane ", and the functional group attached to the end is " OH " denoting alcohol group, so the secondary suffix will be " ol "

Hence, the name of the compound will be ~

[tex]\qquad \sf  \dashrightarrow \:Butan - 1 - ol[/tex]

or simply

[tex]\qquad \sf  \dashrightarrow \: Butan ol[/tex]

Using the ideal gas equation and Gay Lussac's law, the volume of the passenger's collapsed bottle after landing is 0.0075 L.

The ideal gas equation shows the relationship between temperature, pressure, volume and number of moles.

The volume of the passenger's collapsed bottle after landing is 0.0075 L.

Given that;

PV = nRT

n = PV/RT

Hence:

P = 0.75 atm;

V = 0.5 L;

T = 295 K;

R = 0.082 atmL/K.mol

n = 0.75 * 0.5 / 0.082 * 295

n = 0.015 moles

If the pressure after landing was 1.0 atm;

V1n1 = V2n2

V2= V1n1/n2

V2 = 0.5 L *  0.015 moles/ 1 mole

V2 = 0.0075 L

The volume of the passenger's collapsed bottle after landing is 0.0075 L.

Missing parts;

A passenger on an airplane finished a 0.5 L bottle of water during the flight

and replaced the lid. The cabin pressure and temperature were maintained at

0.75 atm and 295 K during the flight. After landing, he noticed his empty water

bottle had collapsed. (12 points)

i. How many moles of gas were in the water bottle?

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Answer:

-

Explanation:

As the piece of metal skitters across the surface of the water in a beaker and — particularly in the case of potassium — it appears to catch fire, it is not obvious that the explanation for both phenomena lies in the production of hydrogen gas.