What factors mechanical weathering ?.


Earth Science.

Answer:

0.44604005953260284 moles

Explanation:

or you could round it to 0.446 moles

mol CO₂ = mass : molar mass CO₂

mol CO₂ = 19.63 : 44 g/mol = 0.446

Answer: The members of homologous series are

HCHO,CH3CHO,C2H5CHO,C3H7CHO .

The members of the homologous series containing -CHO as a functional group is HCHO,CH₃CHO,C₂H₅CHO,C₃H₇CHO .

Functional group is defined as a substituent or group of toms or an atom which causes chemical reactions.Each functional group will react similarly regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.

The reactivity of functional group can be enhanced by making modifications in the functional group .Atoms present in functional groups are linked to each other by means of covalent bonds.They are named along with organic compounds according to IUPAC nomenclature.

Functional group inter conversion is also possible by retro -synthesis.In some cases , functional groups can be charged molecules.

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The molar mass of the element M is mathematically given as

M=91.927g/mol

Question Parameters:

A 35.3 g of element M is reacted with nitrogen to produce 43.5 g of compound M3N2.

Generally, the equation for the Chemical Reaction  is mathematically given as

3M+N2=M3N2

Therefore

moles of N2 is given as

[tex]m=\frac{mass of N2}{molar mass}[/tex]

Where

mass of N2=43.5-35.3

mass of N2=8.2

Therefore

[tex]m=\frac{8.2}{32}[/tex]

m=0.25625mole

Since 2 moles of N2 reacts with 3mols of M

Hence, 0.25625 mole of N2 reacts with 3mole of M

x=3/2*0.256

x=0.384mol

In conclusion, the molar mass of M

[tex]M=\frac{mass of x}{moles of x}\\\\M=\frac{35.3}{0.384}[/tex]

M=91.927g/mol

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Answer:

i believe its the role of the antagonist

Explanation:

The equilibrium pressure of NO is 2.14 atm.

The equilibrium constant is a numerical value that shows the extent to which reactants are converted into products. We have the reaction  2NO₂(g) ⇌ 2 NO(g) + O₂(g).

We have to set up the ICE table

From PV = nRT

P = nRT/V = 4 * 0.082 * 473/2.5 = 62 atm

          2NO₂(g) ⇌ 2 NO(g) + O₂(g)

I          62                 0            0

C         -x                +2x           +x  

E        62 - x           2x               x

Kp = pNO^2 * pO2/pNO2^2

1.11 × 10⁻⁵ = (2x)^2 (x)/(62 - x)^2

1.11 × 10⁻⁵(62 - x)^2 = 4x^3

1.11 × 10⁻⁵(3844 - 124 + x^2) = 4x^3

0.04 - 0.0014x +  1.11 × 10⁻⁵x^2 = 4x^3

4x^3 -  1.11 × 10⁻⁵x^2 +  0.0014x - 0.04 = 0

x = 0.107  atm

Since;

pNO = 2x = 2(0.107) = 2.14 atm

The equilibrium pressure of NO is 2.14 atm.

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The polarity of HBrO2 is greater than that of HBrO hence HBrO2  is a stronger acid than HBrO .

According to the Arrhenius definition, an acid is any sustenance that produces hydrogen ions as the only positive ion in solution. In both molecules we can see that hydrogen is bonded to electronegative oxygen atoms.

The bond is more polar in HBrO2 and as a result of this, the molecule, HBrO2 is a stronger acid than HBrO.

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Answer:

  Field experiments can often have the potential to give scientists opportunities that are not possible in a lab setting.

Explanation:

  Having people "act natural" in a lab setting is impossible to truly achieve, as we all know what happens to our mental state and behavior when we are being actively observed. This is also especially helpful when conducting wildlife research, as there are a myriad of different things influencing animal and plant behavior that would be nigh impossible to recreate perfectly in a controlled lab setting.

  Field research can have its disadvantages as well, as it is very hard to only have one thing change (make an independent variable) in a wild environment with ever-changing weather, social effects, etc. Also, you, as the researcher, as causing an impact on the very location that you are observing, which can alter your results in unpredictable ways.

  The thing to remember is that each type of study has its advantages and disadvantages; if they didn't, then we'd all do the same type of research! You have to weigh your research options and figure out which one works best for your situation :)

The total volume of water that would be removed will be 75 mL

Using the dilution equation:

M1V1 = M2V2

In this case, M1 = 500 mL, V1 = 10.20 M, M2 = 12 M

Substitute:

V2 = 500 x 10.20/12

         = 425 mL

The final volume in order to arrive at 12 M HNO3 would be 425 mL from the initial 500 mL. Thus, the total amount of water that will be removed by evaporation can be calculated as:

500 - 425 = 75 mL

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Answer:

0.032 mole

Explanation:

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With a Ksp of 4.30*10−11 and a molar mass of 274 g / mol the solubility (in g / L) of the generic salt is mathematically given as

S=0.0604g/l

Generally, the Ksp   is mathematically given as

Ksp=4s^3

Therefore

s=(\frac{4.30 × 10−11}{4})^{1/3}

s=2.207×10^{−4]

In conclusion, solubility is

S=2.207×10^{−4]*274

S=0.0604g/l

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Answer:

Explanation:

Hope this helps

Answer:

Gold, Platinum, Silver, Ruthenium

Answer:

the answer is 5

Explanation:

if you add 5% divided by 3 = 15%.

So if you add all of those plus the 30% you will be getting 45%.

The quantity of heat required to convert the ice to water is 5048.4 J.

The quantity of heat required to convert the ice to water is calculated as follows;

Q = n∆Hfus

where;

The number of moles of the ice is calculated as follows;

n = m/M

where;

M is molar mass of water (H2O) = 18 g/mol

n = 15.1/18

n = 0.84 mole

Q = 0.84 x 6.01 x 10³

Q = 5048.4 J

Thus, the quantity of heat required to convert the ice to water is 5048.4 J.

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Answer:

two unpaired electrons

Explanation:

each of which are located in a different pi* antibounding orbital.

Answer:

the difference between model A and model B is the fact that model A has more atoms in it, and they are smaller and all the same type while model B has less atoms, they are bigger and there are different types of atoms.

Explanation:

mr clean

The energy in a single Carbon - Hydrogen (C-H) bond of methane is 413 kJ

From the question, we are to determine the Carbon - Hydrogen bond energy in methane

From the given information,

The total bond energy in a molecule of methane is 1652 kJ

C-H bond energy = [tex]\frac{Total\ bond\ energy\ in\ methane}{number\ of \ C-H \ bonds}[/tex]

Number of C-H bonds in methane = 4

Therefore,

C-H bond energy = [tex]\frac{1652}{4}[/tex]

C-H bond energy = 413 kJ

Hence, the energy in a single Carbon - Hydrogen (C-H) bond of methane is 413 kJ

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Answer:

number of moles = 0.21120811

Explanation:

To find the number of moles, given the mass of the solute, we use the formula:

[tex]\mathrm{n = \dfrac{ m }{ M } }[/tex]

[tex]\mathrm{n = number\:of\:moles\:(mol)}[/tex]

[tex]\mathrm{m = mass\:of\:solute\:(g)}[/tex]

[tex]\mathrm{M = molar\:mass\:of\:solute\:( \dfrac{ g }{ mol } )}[/tex]

Label the variables with the numbers in the problem:

[tex]\mathrm{n =\:?}[/tex]

[tex]\mathrm{m =30\:g }[/tex]

[tex]\mathrm{M =\:?\:Calculate\:the\:molar\:mass }[/tex]

The first thing we have to do is find the molar mass of sodium sulfate, in order for us to use the formula for finding the number of moles:

Formula for finding the molar mass of sodium sulfate:

[tex]M({ \left Na \right }_{ 2 } { \left So \right }_{ 4 }) = m \left( Na \right) +m \left( S \right) +m \left( O \right)[/tex]

For the variables and what they mean are below for finding the molar mass of sodium sulfate:

[tex]\mathrm{M =molar\:mass }[/tex]

[tex]\mathrm{m =moles=2\:moles\:for\:Na\:,1\:mole\:for\:S,\:and\:4\:moles\:for\:O}[/tex]

[tex]\mathrm{Na =sodium=22.99\:g }[/tex]

[tex]\mathrm{S =sulfur=32.06\:g }[/tex]

[tex]\mathrm{O =oxygen=16.00\:g }[/tex]

Plug the numbers into the formula, to find the molar mass of sodium sulfate:

[tex]M({ \left Na \right }_{ 2 } { \left So \right }_{ 4 }) = m \left( Na \right) +m \left( S \right) +m \left( O \right)[/tex]

[tex]\mathrm{Substitute\:the\:values\:into\:the\:formula}[/tex]

[tex]M = 2 \left( 22.99 \right) +1 \left( 32.06 \right) +4 \left( 16.00 \right)[/tex]

[tex]\mathrm{Multiply\:2\:by\:22.99\:to\:get\:45.98\:and\:1\:by\:32.06\:to\:get\:32.06}[/tex]

[tex]\mathrm{M = 45.98+32.06+4\:(16)}[/tex]

[tex]\mathrm{Multiply\:4\:by\:16\:to\:get\:64}[/tex]

[tex]\mathrm{M = 45.98+32.06+64}[/tex]

[tex]\mathrm{Add\:45.98\:and\:32.06\:to\:get\:78.04}[/tex]

[tex]\mathrm{M = 78.04+64}[/tex]

[tex]\mathrm{Add\:78.04\:and\:64\:to\:get\:142.04}[/tex]

[tex]\mathrm{M = 142.04}[/tex]

Now that we have found the molar mass, we can calculate the number of moles in the solution of sodium sulfate with the formula:

[tex]\mathrm{n = \dfrac{ m }{ M } }[/tex]

[tex]\mathrm{n =\:?}[/tex]

[tex]\mathrm{m =30\:g }[/tex]

[tex]\mathrm{M = 142.04\:g/mol}[/tex]

[tex]\mathrm{Substitute\:the\:values\:into\:the\:formula}[/tex]

[tex]\mathrm{n = \dfrac{ 30 }{ 142.04 }}[/tex]

[tex]\mathrm{Divide\:142.04\:by\:30\:to\:get\:0.21120811}[/tex]

[tex]\mathrm{n = 0.21120811}[/tex]

0.21120811 rounded gives you 0.2112

or if you did the problem without decimals

30 grams of sodium sulfate divided by its molecular weight – which we found to be 142 – gives us a value of 0.2113 moles.

Answer:

  The purpose of this guide is to help you write a clear and concise report that summarizes the lab I just completed.  This lab showed me how water carries rocks to a new location. For instance how the first model showed how a stream would act with light drizzle to downpour as I saw the outcomes were all if not completely then partially different  

            I read the information that was given to me before I started each lab lesson and went on from there.

Explanation:

:)

Answer:

Balanced reaction:

3 H2 (g)  + N2 (g)  → 2 NH3 (g)

Use stoichiometry to convert g of H2 to g of NH3.  The process would be:

g H2 → mol H2 → mol NH3 → g NH3

12.0 g H2 x (1 mol H2 / 2.02 g H2) x (2 mol NH3 / 3 mol H2) x (17.03 g NH3 / 1 mol NH3) = 67.4 g NH3

Explanation: See above

Hope this helps, friend.

The standard for chromium VI in a sample is 0.1 milligrams per liter (mg/l) or 100 parts per billion (ppb).

EPA is an acronym that stands for Environmental Protection Agency. The major concern of the agency is to ensure that the level of contaminants released into the environment does not exceed the set standards.

The standard for chromium VI in a sample is 0.1 milligrams per liter (mg/l) or 100 parts per billion (ppb), Since the question is incomplete, we can't ascertain if the chromium (VI) concentration exceeds this standard.

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Answer:

c) burrow underground
a) false
a) save rain water
c) prevent animals eating it
Instead of leaves, most cacti have spines or scales (which are modified leaves). These spines and scales do not lose water through evaporation (unlike regular leaves, which lose a lot of water). The spines protect the cactus from predators (animals that would like to eat the cactus to obtain food and/or water).
b) false

What abiotic factors do humans need?

The most important abiotic factors include water, sunlight, oxygen, soil and temperature. Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All living organisms need water. In fact, water makes up at least 50% of almost all living things

Answer:

11.3%

Explanation:

The stock market’s average annual return through history is 11.3%, which is more than most savings accounts pay.

Answer:

frequency of the wave f=4 Hz

Answer:

dont know but i went to the store td and i bought some food then after i ate it i had to use the bathroom n i fell on my way there and  it hurt

Explanation:

(Many social behaviors of animals are adaptive, meaning that being social ultimately increases an animal's fitness — its lifetime reproductive success. One example of how social behavior is adaptive is aggregation against predators.)

The measure of the sum of the interior angles of a convex polygon with n sides is given by [tex]S=(n-2)180[/tex]

A polygon can be defined as a two-dimensional geometric figure that consists of straight line segments and finite number of sides.

A quadrilateral can be defined as a type of polygon that is made up of four (4) sides, four (4) vertices, four (4) edges and four (4) angles.

Mathematically, the measure of the sum of the interior angles of a convex polygon with n sides is given by:

[tex]S=(n-2)180[/tex]

In Geometry, the measure of the sum of the angles of a convex quadrilateral, pentagon, and a nonagon is equal to 360 degrees.

For a regular polygon:

Mathematically, the measure of an interior angle with n sides is given by;

[tex]A=(2n-4)90[/tex]

For a regular octagon:

Mathematically, the measure of an interior angle is equal to 135 degrees.

Lastly, the sum of the measure of the exterior angles, one at each vertex of a convex polygon is equal to 360 degrees.

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