What role does wind play in mechanical weathering?

As with most stoichiometry problems, it is necessary to work in moles. The ratio of the moles of each element will provide the ratio of the atoms of each element.

Get the mass of each element by assuming a certain overall mass for the sample (100 g is a good mass to assume when working with percentages).

Remeber that percentages are a ratio multiplied by 100. You must convert percentages back to their decimal value before working with them.

(.4838) (100 g) = 48.38 g C

(.0812 ) (100 g) = 8.12 g H

(.5350) (100 g) = 53.38 g O

Convert the mass of each element to moles of each element using the atomic masses.

(48.38 g C) (1 mol/ 12.10 g C) = 4.028 mol C

(8.12 g H) (1 mol/ 1.008 g H) = 8.056 mol H

(53.38 g O) (1 mol/ 16.00 g O) = 3.336 mol O

Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles.

Use the mole ratio to write the empirical formula.

Calculating the equilibrium constant (K) for a reaction requires knowing the balanced equation of the reaction. I won't be able to give the exact value of K without the exact reaction equation. However, I can explain how to use the concentrations provided to determine K.

An equilibrium constant statement for the reaction has the general form:

\(K = [C]^c[D]^d / [A]^a[B]^b\)

In this case, let's assume the reaction is:

aA + bB ⇌ cC + dD

Given the initial and equilibrium concentrations of CO and Cl 2, the following values ​​can be applied to the concentrations:

[A] = [CO] (initial concentration)

[B] = [Cl2] (initial concentration)

[C] = [CO] (equilibrium concentration)

[D] = [Cl2] (equilibrium concentration)

Now that the concentration is determined, we can determine the equilibrium constant (K):

\(K = ([C]^c [D]^d) / ([A]^a [B]^b)K = ([CO]^c [Cl2]^d) / ([CO]^a [Cl2]^b)K = ([0.25]^c [0.15]^d) / ([0.79]^a [0.69]^b)\)

The equilibrium constant (K) for the reaction can be obtained by substituting the values ​​of a, b, c and d based on the balanced equation and the specified concentration.

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The equation for the formation of each compounds are given below:

N₂ (g) + 3 H₂ (g) --> 2 NH₃ (g)

C (s) + O₂ (g) --> CO₂ (g)

4 Fe (s) + 3 O₂ (g) --> 2 Fe₂O₃ (s)

C (s) + 2 H₂ (g) --> CH₄ (g)

The standard enthalpy of formation of a substance is defined as the enthalpy change that occurs when 1 mole of the substance is formed from its constituent elements in their standard states.

Hf for NH₃ is -46.0 kJ/mol.

Hf for CO₂ is -393.5 kJ/mol

Hf for solid Fe₂O₃ is -826.0 kJ/mol.

Hf for methane gas is -74.9 kJ/mol.

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The new freezing point of the solution if it is calculated that the freezing point changes by 1.09 C is -2.17° C.

Change in freezing point = x molality times Kf

Kf is the solvent's (water) freezing point constant, and molality is the solute's molal concentration in the solvent.

We can enter the following values into the algorithm to solve for molality because the freezing point reduction is specified as 1.09°C:

Kf x molality = 1.09

Water has a 1.86°C/m freezing point reduction constant. As a result, we have:

Molality equals 1.09 / 1.86 to 0.586 mol/kg.

We can use: to ascertain the solution's new freezing point:

Change in freezing point = m x I x Kf

As a result, we have:

\(T_{f}\) = Kf x m x I = 1.86 °C per mete x 0.586 mol/kg x 2 = 2.17 °C

New freezing point is equal to 0 - 2.17 = -2.17 C.

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Answer:

Option A. 327 °C

Explanation:

The following data were obtained from the question:

Initial pressure (P1) = 12 atm

Initial temperature (T1) = 27 °C

Final pressure (P2) = 24 atm

Final temperature (T2) =?

Next, we shall convert 27 °C to Kelvin temperature. This can be obtained as follow:

Temperature (K) = Temperature (°C) + 273

Initial temperature (T1) = 27 °C

Initial temperature (T1) = 27 °C + 273

Initial temperature (T1) = 300 K

Next, we shall the temperature at which the cylinder will explode as follow:

Initial pressure (P1) = 12 atm

Initial temperature (T1) = 300 K

Final pressure (P2) = 24 atm

Final temperature (T2) =?

P1/T1 = P2/T2

12/300 = 24/T2

Cross multiply

12 × T2 = 300 × 24

Divide both side by 12

T2 = (300 × 24) /12

T2 = 600 K

Finally, we shall convert 600 K to celsius temperature.

This can be obtained as follow:

Temperature (°C) = Temperature (K) – 273

Temperature (K) = 600 K

Temperature (°C) = 600 – 273

Temperature (°C) = 327 °C

Therefore, the minimum temperature at which the cylinder will explode is

327 °C.

Answer:

i just had gthe sme question looked it up and got it WRONG

Explanation:

sorry i ont have a clue

In the slow carbon cycle, carbon moves through rocks, soil, oceans, and the atmosphere over a period of 100–200 million years through a series of chemical reactions and tectonic activity.

Carbon cycle is defined as the exchange of carbon compounds between the earth's biosphere, geosphere, pedosphere, hydrosphere, and atmosphere. Life on Earth is reliant on the carbon cycle. Because nature tends to keep carbon levels in balance, the amount of carbon that is naturally released from reservoirs equals the amount that is naturally absorbed by reservoirs.

The slow carbon cycle is the term used to describe the flow of carbon compounds between the atmosphere and the Earth. The carbon cycle processes of combustion and breakdown are primarily involved in this process. The annual average for the slow carbon cycle is 1013 to 1014 grams of carbon.

Thus, in the slow carbon cycle, carbon moves through rocks, soil, oceans, and the atmosphere over a period of 100–200 million years through a series of chemical reactions and tectonic activity.

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The molar mass of MgCrO4 is approximately 140.30 g/mol.

To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.

The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).

The atomic masses of the elements can be found on the periodic table:

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chromium (Cr) has an atomic mass of around 51.99 g/mol.

Oxygen (O) has an atomic mass of about 16.00 g/mol.

Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:

Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)

Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)

Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol

Molar mass ≈ 140.30 g/mol

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The percent by mass of sulfur is  20.1%.

Here, we need to find the percent by mass of the sulfur atom and we have to do that by first obtaining the molar mass of the compound as we can see it from the question.

Hence;

Molar mass of the compound = 63.55 + 32.07 + 4( 16.00 )

=  63.55 + 32.07 + 64

= 159.62

We now have to find the percent by mas of sulfur;

32.07/159.62  * 100

= 20.1%

The compound contains 20.1% of sulfur by mass of the compound as shown in the calculation.

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Answer:

2.place value is 70 000 00

The pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91 (option B).

The pH of a solution in chemistry refers to the notation expressing the acidity or alkalinity of a solution.

The pH is measured on a logarithmic scale of which 7 is neutral, lower values are more acid and higher values more alkaline.

The pH of a solution can be calculated using the following formula;

pH = - log {H+}

pH = - log {0.0100}

pH = 2

Therefore, the pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91.

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Answer:

Protons

Explanation:

Metals, Nonmetals, and Metalloids group the elements on the periodic table. Protons is not one of these but rather a subatomic particle that all the elements have.

Answer:

protons

Explanation:

The mass of the cereal that you would need to consume can be obtained as 84.8 g

The number of moles, denoted by the symbol "n," is a fundamental unit of measurement in chemistry that represents the amount of a substance. It is used to quantify the quantity of atoms, molecules, or ions in a sample.

Number of moles of sucrose in the cereal = 11g/342 g/mol

= 0.03 moles

Now;

0.03 moles of sucrose is contained in 60 g of cereal

0.0424 moles of sucrose would contain 0.0424 moles * 60 g/0.03 moles

= 84.8 g

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Answer:

false

Explanation:

Answer:

d

Explanation:

The material that represents the crust is option d. Thin layer of plaster.

It is the outermost shell of a planet i.e. terrestrial.  The crust of the earth should be split into older, thicker continental crust, etc. Also, it is made of solid rocks and minerals. Due to this, the thin plaster layer represents the material for the crust.

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Answer:

Environmental science is also referred to as an interdisciplinary field because it incorporates information and ideas from multiple disciplines. Within the natural sciences, such fields as biology, chemistry, and geology are included in environmental science.

Explanation:

Environmental science is an interdisciplinary science because it integrates physics, biology, and geography  to the study of the environment, and the solution of environmental problems.

Environmental science is the field of science that studies the interactions of the physical, chemical, and biological components of the environment and the relationships .

Interdisciplinary science allows you to study according to your professional and academic abilities and goals .

Environmental science is an interdisciplinary science because it integrates physics, biology, and geography  to the study of the environment, and the solution of environmental problems.

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Answer:

B. trough to trough is NOT an accurate way to measure wavelength.

Explanation:

The correct way to measure wavelength is from crest to crest or from trough to trough, as these are the points of maximum displacement in the wave. Alternatively, one could measure from a point halfway between two crests (or two troughs) to another point halfway between the next two crests (or troughs), which is known as half crest to half crest measurement.

The accurate ways to measure the wavelength of a wave are between two crests (crest to crest), two troughs (trough to trough), or half crest to another half crest. Measuring from a crest to a trough gives half the wavelength. Therefore, option A (crest to trough) is not an accurate way to measure wavelength.

In the context of wave physics, the accurate ways to measure the wavelength of a wave are between two successive crests (crest to crest), or two troughs (trough to trough). The measurement from a half crest to another half crest is also valid, as it essentially represents the same distance as from crest to crest or trough to trough. However, measuring from a crest to a trough does NOT give you the wavelength, but instead it gives you half the wavelength because a complete wave cycle is from crest to crest or trough to trough. Therefore, option A (crest to trough) is NOT an accurate way to measure wavelength.

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The balanced chemical equation for the reaction is: H2SO4 + 2KOH → K2SO4 + 2H2O. It can be concluded that the basicity of tetraoxosulphate VI acid is 2.

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Answer:

Cd(NO3)2   +  FeCl3 =  CdCl2 + Fe(NO3)2  

is an impossible equation to balance as this reaction will simply not occur and it will not work either ways

did your teacher make this ? 

The possible effects of this condition on the family is adverse because they can't do fishing due to eruption.

Aquatic life can be affected due to volcanic eruption due to increase in acidity, change in temperature, and change in food supply. These factors can damage and also kill fish so this eruption has adverse effect on the family's economic condition and my advice is to them to change their place of living and settle in other unaffected area.

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The most accurate statement about signal transmissions among the given options is:

a) All signals in transmission will lose clarity with distance.

When a signal is transmitted over a distance, it can experience various types of degradation or attenuation. Factors such as distance, interference, noise, and the medium through which the signal travels can all contribute to a reduction in the clarity or quality of the signal. This means that as the distance between the source and receiver increases, the signal may become weaker, distorted, or prone to interference, resulting in a loss of clarity.

Answer:

False

Explanation:

The reaction is not balanced.

The balanced reaction is as following:

2C8H18 + 25O2 => 16CO2 + 18H2O

C= 16

H = 36

O = 50

Answer:

A. Chloroplast

Explanation:

Answer:

Explanation:

The balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is:

HCl(aq) + NaOH(s) → NaCl(aq) + H2O(l)

From the balanced equation, we can see that one mole of hydrochloric acid reacts with one mole of sodium hydroxide to produce one mole of sodium chloride and one mole of water.

First, we need to determine which reactant is limiting, i.e., which reactant is completely consumed in the reaction. To do this, we need to compare the number of moles of each reactant, using their respective molar masses:

Molar mass of HCl = 1.008 g/mol (atomic weight of hydrogen) + 35.45 g/mol (atomic weight of chlorine) = 36.46 g/mol

Molar mass of NaOH = 22.99 g/mol (atomic weight of sodium) + 16.00 g/mol (atomic weight of oxygen) + 1.008 g/mol (atomic weight of hydrogen) = 39.99 g/mol

Number of moles of HCl = mass / molar mass = 30.0 g / 36.46 g/mol ≈ 0.823 mol

Number of moles of NaOH = mass / molar mass = 14.3 g / 39.99 g/mol ≈ 0.358 mol

Since the stoichiometric ratio between HCl and NaOH is 1:1, NaOH is the limiting reactant because it has fewer moles than HCl.

Therefore, we can calculate the maximum mass of NaCl that can be produced by the reaction using the number of moles of NaOH:

Number of moles of NaCl produced = number of moles of NaOH used in the reaction = 0.358 mol

Mass of NaCl produced = number of moles of NaCl produced x molar mass of NaCl

Molar mass of NaCl = 22.99 g/mol (atomic weight of sodium) + 35.45 g/mol (atomic weight of chlorine) = 58.44 g/mol

Mass of NaCl produced = 0.358 mol x 58.44 g/mol = 20.9 g

Therefore, the maximum mass of NaCl that can be produced by the reaction is approximately 20.9 g

Answer: 2N2H4 + (CH3)2N2H2 + 3N204 → 6N2 + 2CO2 + 8H20.

Explanation:

As per the balanced reaction,  3 moles of N₂O₄ is needed one mole of dimethyl hydrazine and  2 moles of hydrazine. Thus, it is the limiting reactant. The amount of water produced by this reaction will be 2021.73 Kg.

The reactant which is has fewer number of moles in a reaction and thus, it determines the yields of products is called the limiting reactant. In the given reaction, 2 moles of hydrazine requires 3 moles of nitrogen oxide.

Molar mass of hydrazine = 32 g/mol.

2 moles = 64 g.

Molar mass of N₂O₄ = 60 g/mol

3 moles = 276 g.

64 g needs 276 g. Thus mass of N₂O₄ needed for 1200 Kg is

= (1200000 g × 276 g)/ 64 g

= 5175 Kg

But we have only 4500 Kg N₂O₄ . Thus it is the limiting reactant.  276 g of N₂O₄  produces 8 moles or 124 g of water. Thus mass  of water produced by 4500 kg of N₂O₄  is  calculated as follows:

mass of water =  (4500000 g × 124 g) / 276

                        = 2021.73 Kg.

Therefore, there will be 2021.7 g of water left in the lunar atmosphere through this reaction.

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Answer:

here is the answer

Explanation:

Diffusion is a process of passive transport in which molecules move from an area of higher concentration to one of lower concentration.

The bond angles of the various portions of the phenyl alanine are;

Carbon 1 - 109 degrees

Carbon 2 - 120 degrees

Carbon 3 - 120 degrees

We know that the bond angle has to do with the dihedral angle that exists between two atoms that are connected to a single central atom. The central atom is always the atoms to which the other atoms are seen to be connected.

The structure of the compound phenylalanine has been shown in the image that is attached to this answer in some portions of the molecule we have been asked to be able to obtain the bond angle of the compound.

Clearly, in case 1, we have a saturated carbon atom and the bond angle is 109 degrees. In case 2 we have a carbon atom that has a double bond and the bond angle is 120 degrees. The same also does apply to carbon atom number 3.

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Answer:

  MCl₂

Explanation:

The formula for boiling point elevation can be used to find x. The "complete dissociation" means there will be an ion of M and x ions of Cl in the solution. The number of moles of solute will be 30.2 grams divided by the molecular weight of MClx, where x is the variable we're trying to find.

  \(\Delta T=imK_b\qquad\text{where i=ions/mole, m=molality, $K_b\approx 0.512$}\\\\376.81-373.15=(x+1)\dfrac{\text{moles}}{\text{kg solvent}}(0.512)\\\\\dfrac{3.66}{0.512}=(x+1)\dfrac{\dfrac{30.2}{56+35.45x}}{0.1}=\dfrac{302(x+1)}{56+35.45x}\\\\\dfrac{3.66}{0.512\cdot 302}(56+35.45x)=x+1\\\\\dfrac{3.66\cdot 56}{0.512\cdot 302}-1=x\left(1-\dfrac{3.66\cdot 35.45}{0.512\cdot 302}\right)\\\\x=\dfrac{50.336}{24.877}\approx 2.023\)

Then the formula for the salt is MCl₂.