Hugh wrote the properties of physical and chemical weathering in the table shown.
Types of Weathering
Physical Weathering
Chemical Weathering
Temperature may break the rocks Can be caused by chemicals in water
Can be caused by snow and pressure Composition of rock remains same
Why is Hugh's table incorrect? (5 points)
a
Chemicals in water cause physical weathering.
b
ос
Temperature is unable to break rocks physically.
Chemical weathering changes the composition of rocks.
Physical weathering is unaffected by snow and pressure.
Od

Answer:

The process in which energy is emitted by one object ,transmitted through .......

Answer:the process in which energy is emitted by one object, transmitted through space, and absorbed by another

Explanation: took the test

Explanation:

First, you need to balance the equation:

N2    +  3 H2   ====>    2  NH3

                  so three moles of H2   result in  2 moles of NH3

                               ratio of   3:2

How many moles of NH3 is 36.5 gm  ??

   Using periodic table NH3 mole weight = 14.007  + 3*1.008 =17.031 g/mole

     36.5 g / 17.031 g/mole = 2.14 moles  of NH3

Using the ratios above   3/2 = x / 2.14   shows x = 3.21 moles of H2 needed

Answer:

Cl-

Explanation:

Neutral (Cl) have 7 electron, but Cl- have 8 electron due to gain of 1 electron

Answer:

Option 2 is the correct answer

Explanation:

Ceramics, which mainly consist of oxides, carbides and nitrides, can withstand very high temperatures; furnaces are generally lined with such ceramics.

Answer:

The Avogadro's  number is \(N_A = 6.02289 *10^{23}\)

Explanation:

From the question we are told that

   The edge length is  \(L = 5.02 * 10^{-8} \ cm= \frac{5.02 * 10^{-8} }{100} = 5.02 * 10^{-10}\)

    The density of the metal is \(\rho = 5.30\ g/cm^3 = 5.30 * \frac{g}{cm^3} * \frac{1*10^6}{1*10^3} = 5.30 *10^3kg/m^3\)

     The molar mass of  Ba is  \(Z = 137.3 \ g/mol = \frac{137.3}{1000} = 0.1373 \ kg / mol\)

Generally the volume of a unit cell is  

       \(V = L^3\)

substituting value

        \(V = [5.02 *10^{-10}]^3\)

         \(V = 1.265*10^{-28}\ m^3\)  

From the question we are told that 68% of the unit cell is occupied by Ba atoms and that the structure is a metal which implies that the crystalline structure will be  (BCC),

The volume of barium atom is  

        \(V_a = \frac{V}{2} * 0.68\)

substituting value

        \(V_a = \frac{ 1.265*10^{-28}}{2} * 0.68\)

        \(V_a = 4.301 *10^{-29} \ m^3\)

The Molar mass of barium is mathematically represented as

      \(Z = N_A V_a * \rho\)

Where \(N_A\) is the Avogadro's number

 So  

      \(N_A = \frac{ Z}{ V_a * \rho}\)

substituting value

     \(N_A = \frac{ 0.1373}{ 4.301*10^{-29} * 5.3*10^{3}}\)

     \(N_A = 6.02289 *10^{23}\)

Answer:

C. Protein

Explanation:

Enzymes are proteins that speed up reactions. Think of saliva and how it helps break down the food you eat.

Answer:

C! protein

Explanation:

Answer:

True

Explanation:

hope this helps mate

Answer:

H2SO4 + 2NAOH➡NA2SO4+2H2O

H2SO4 = 1*2 +32+16*3= 98g

NAOH = (11+16+1)=28

Explanation:

To calculate the number of Mole = Mole *Molar Mass

To calculate for gram = Mole/ Molar Mass

20.5g NaoH/1 * 1 mole NaOH/28g NaoH = 0.73M NaoH

0.73M NaoH /1 * 1 M H2SO4 /2M NaoH = 0.37M H2SO4

0.37 M H2SO4 /1 * 98g H2SO4 /1M H2SO4 = 0.00367g H2SO4

:- 0.00367g of Sulphuric Acid will be needed to complete the reaction.

Answer:

E. Both B and D would work

Explanation:

One of the major synthetic routes to produce ketones from alkynes involve the reactions known as oxomercuration and hydroboration.

Oxomercuration involves reacting the alkyne substrate with mercuric sulphate and sulphuric acid followed by reaction with H^+ from water.

Hydroboration involves reaction of the alkyne substrate with a molecule of the sort HB(R)2 followed by addition of alkaline hydrogen peroxide.

In both cases the starting material should be the 4-octyne.

Answer:

1.0 x \(10^{-7}\)

Explanation:

simplify it down

Answer: The answer is a. limiting, excess. I took the test.

Explanation:

The equilibrium constant relates the concentrations of the products and reactants in the chemical equilibrium. To calculate it we can apply the following equation.

For the reaction: aA + bB ---> cC + dD

Equlibrium constant (Ke) will be:

The letters in square brackets refer to the concentration raised to the respective coefficient. Now we replace the known values:

So, the equilibrium constant (Ke) will be 3.2M

The binding energy per nucleon for the ¹⁹F nucleon is equal to 7.786 MeV/nucleon.

Binding energy can be defined as the minimum quantity of energy that is required to remove the particle from the system. Nuclear binding energy can be described as the energy required to dismantle a nucleus of an atom into free neutrons and protons.

The binding energy will be determined from the mass defect. Mass defect is calculated from the difference between the mass observed and the expected combined mass.

Given the mass of the ¹⁹F = 18.9984 a.m.u.

The mass defect for the ¹⁹F can be calculated as:

Δm = \((M _n +M_p) - M_F\)

\(\triangle m =( 9\times 1.0078 + 10 \times 1.0087 )- 18.9984\)

\(\triangle m =0.1588 \;a.m.u.\)

The binding energy for the fluorine can be calculated as:

E = Δmc²

E = 0.1588 × 931.5

E = 147.92 MeV

The binding energy per nucleon of ¹⁹F can be calculated as:

B.E.N. = 147.92/18.9984 = 7.786 MeV per nucleon

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Answer:

Nickel sulfide and Lithium nitrate are formed when Ni(NO3)2 is mixed with Li2S is.

Please mark me as brainliest

Answer:

name four agricultural inputs are subsidized by the government

0.297 kJ of heat is needed to raise the temperature of 10g of aluminum from 22 degrees Celsius to 55 degrees Celsius.

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.

It is given by the formula -

                                                  Q = mcΔT

where, Q = amount of heat

m = mass

c = specific heat

ΔT = Change in temperature

Given,

mass = 10g

c = 0.901J/g⁰C

Initial temperature (T₁) = 22⁰C

Final Temperature (T₂) = 55⁰C

Q = mcΔT

= 10 × 0.901 × (55 -22)

= 297.33 J = 0.297 kJ

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The concentration of H3O+ ions in the solution of aluminum chloride is \(3.16×10^-5\) mol/L.

Aluminum chloride is an acidic salt that contains a cation, Al3+, and an anion, Cl-. When aluminum chloride is dissolved in water, it dissociates into its constituent ions, and the Al3+ cations hydrolyze to produce H+ ions.

This reaction leads to the formation of an acidic solution. The pH of a solution of aluminum chloride is \(4.5×10^0\). We need to determine the concentration of H3O+ ions in this solution.

The concentration of H3O+ ions in a solution is given by the equation: pH = -log[H3O+] where pH is the negative logarithm of the concentration of H3O+ ions in the solution. The negative sign indicates that the pH is inversely proportional to the concentration of H3O+ ions. To determine the concentration of H3O+ ions, we need to rearrange the equation:

[H3O+] = \(10^-pH\) Substituting the value of pH =\(4.5×10^0\), we get: [H3O+] = \(10^-4.5\)

The value of \(10^-4.5\) can be calculated using scientific notation: \(10^-4.5\)= \(3.16×10^-5\) mol/L

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The mass and charge must be balanced so that the compound formed is neutral. The limiting reactant determines the amount of the precipitate that can be formed.

When we talk about an ionic equation, we are talking about the kind of equation that is able to show the ions that are able to undergo a change in a given reaction. We know that in many cases the ionic reaction would lead to the formation of a precipitate and this is the solid product that is obtained when we happen to mix two solutions that are known to be aqueous solutions.

Having made all that introduction, we know that a compound is said to be neutral when the charges in the species that form the compound could be seen as being balanced. This is the reason why the mass and charge must be balanced when we are dealing with an ionic reaction equation.

The factor that determines the amount of precipitate that would form is the limiting reactant of the process.

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T2 has a temperature of 58.6 °C in Celsius.

The International System of Units (SI) has two temperature scales: the Kelvin scale and the Celsius scale.In the Celsius scale, which was formerly known as the centigrade scale outside of Sweden, the degree Celsius is the unit of measurement for temperature. The ideal gas law, which asserts that PV = nRT, describes how a gas's temperature, pressure, and volume are related to one another.

Since the pressure and amount of gas in the balloon are assumed to be constant, we can rearrange the equation to solve for the temperature:

\(T2 = \frac{(PV1)}{(nRV2) }\)

\(T2 =\frac{ (1 atm)(1940 L)}{(1 mol)(8.314 J/mol .K)(3880 L) }\)

T2 = 58.6 ∘C

Therefore,The Celsius temperature, T2 is 58.6°C

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Answer:

I would say 4.) Biomass

Explanation:

This looks like the best possible answer because it is plant based. Worst case scenario we could run out of plants. In comparison, wind will pretty much always be around along with wave/tidal power and solar.

Answer:

Explanation:

bc

One molecule of propanol contains only one -OH group and not three -OH groups or three -CH3 groups.

The -OH group is attached to the central carbon atom and makes propanol a useful solvent and intermediate in organic chemistry.Propanol is a colorless liquid that belongs to the family of alcohols. It has the formula C3H8O, and it contains three carbon atoms, eight hydrogen atoms, and one hydroxyl group (-OH) attached to one of the carbons. One molecule of propanol contains only one -OH group, which is attached to the central carbon atom.

Thus, option (2) is the correct answer, and the other options are incorrect.The -OH group in propanol is responsible for its unique chemical and physical properties. It makes propanol soluble in water and other polar solvents and gives it a high boiling point of around 97°C. The hydroxyl group can also participate in chemical reactions, such as esterification, dehydration, oxidation, and reduction. For example, propanol can be oxidized to form propanal and then propanoic acid, which is a useful synthetic intermediate for many organic compounds.Apart from the -OH group, propanol also contains two other functional groups called methyl groups (-CH3). These are attached to the two carbon atoms adjacent to the central carbon. However, the question only asks about the number of -OH groups in propanol, so the methyl groups are irrelevant.
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The sample of air should be heated to 252 Kelvin (K) to increase its volume by 25%.

It is possible to determine the temperature to which the sample of air should be heated by using the concept of the ideal gas law. PV = nRT is the ideal gas law, and it relates the pressure (P), volume (V), number of moles (n), temperature (T), and gas constant (R). we can focus on the relationship between volume and temperature since the number of moles and pressure are assumed to be constant.

By showing the increase in volume as a percentage (25%), we can make the equation (V+0.25V)/T = V/T, where V represents the initial volume of the air.

On making the equation simple, we find  Tfinal / Tinitial = 1.25.

To solve for Tfianal, the final temperature,

Tfinal = Tinitail / 1.25

On substituting the initial temperature value of 315K into the equation, we will be getting;

Tfinal = 315K / 1.25

Tfinal = 252K

Hence, the sample of air should be heated to 252 Kelvin (K) in order to increase its volume by 25%.

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Answer: 68

Explanation: u times them

The concentration of the solution is obtained as 7.3 * 10^-6 M.

We know that one of the ways by which we are able to obtain the concentration of substances especially those that are colored is by the use of spectrophotometry. In a spectrophotometer, there is a wavelength of maximum absorption that could be used to measure the concentration of the solution as we can see in the question.

By the use of the Beer Lambert's law we have;

A = εcl

A = Absorption

ε = molar absorptivity

c = concentration

l = path length

Thus we would have;

0.2 = 27400 M-1cm-1 * c * 1.00 cm

c = 0.2/27400 M-1cm-1 *  1.00 cm

c = 7.3 * 10^-6 M

We would have from the calculation that we have a solution whose concentration is 7.3 * 10^-6 M.

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The right brain part of the brain is affected by a smell, a song, or a photograph.

The right brain is more intuitive and visually oriented. It is occasionally referred to as the analog brain. It thinks less logically and with more creativity. According to out-of-date research by Sperry, the right brain aids in creativity.

Posterior parietal cortex of the parietal lobe of the brain mainly deals with the photographs.

The olfactory bulb, a structure in the front of the brain, processes smells before sending data to other regions of the body's central nervous system.

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The right brain part of the brain is affected by a smell, a song, or a photograph.

What is Right Brain?

The right brain is more intuitive and visually oriented. It is occasionally referred to as the analog brain. It thinks less logically and with more creativity. According to out-of-date research by Sperry, the right brain aids in creativity.

Which part of brain deals with photograph?

Posterior parietal cortex of the parietal lobe of the brain mainly deals with the photographs.

Which part of brain deals with Smell?

The olfactory bulb, a structure in the front of the brain, processes smells before sending data to other regions of the body's central nervous system.

The freezing point of the solution containing 0.867 m glycerin is -1.61442 °C. Option C is correct

The mass of glucose in 505 mL of 10.5% glucose solution is 53.01 g or 5.30 x 10^2 g.

Option C is correct

To find the freezing point depression of the solution containing 0.867 m glycerin:

ΔTf = Kf * molality

ΔTf = (1.86°C/m) * 0.867 m

ΔTf = 1.61442 °C

The freezing point depression is 1.61442 °C.

The freezing point of the solution is:

Freezing point = 0.0 °C - ΔTf

Freezing point = 0.0 °C - 1.61442 °C

Freezing point = -1.61442 °C

To find the mass of glucose in 505 mL of 10.5% glucose solution:

Mass of glucose = Volume of solution * Density of solution * % mass

Mass of glucose = 505 mL * 1.04 g/mL * 10.5%

Mass of glucose = 53.01 g

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Answer:

I'm thinking ethier D or A

Explanation:

We can find the number of moles using the molarity formula:

We have to convert 250 mL to L. Remember that 1 liter equals 1000 mL:

Now, that we have the value of volume in liters (0.25 L) and the molarity (0.0666 M (mol/L) ), we can clear in the formula for moles and replace the given values:

The answer is that we have 1.66 x 10^(-2) moles in 0.25 L of 0.0666 M of CH3CH2Cl.