what is the main cause for global wind patterns?

A) currents in the ocean affect the air above it

B) unequal heating of different parts of earth

C) differences in elevation on different landmasses

D) greenhouse gases

(no guessing please )
​

The total mass of the samples should be reported as 5077.46 grams.

To calculate the total mass of the samples, we need to convert all the masses to the same unit.

The first sample has a mass of 0.5183761 kg. Since 1 kilogram is equal to 1000 grams, the mass of the first sample is 0.5183761 kg * 1000 g/kg = 518.3761 grams.

The second sample has a mass of 9.342 mg. Since 1 milligram is equal to 0.001 grams, the mass of the second sample is 9.342 mg * 0.001 g/mg = 0.009342 grams.

The third sample has a mass of 5076.6 g, which is already in grams.

Now we can add up the masses of all three samples:

Total mass = 518.3761 grams + 0.009342 grams + 5076.6 grams = 5077.46 grams.

Therefore, the total mass of the samples should be reported as 5077.46 grams.

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Answer:

ok this might not be right but i think its 1,575??

Explanation:

(125)(28)(0.450)

i think you just multiply the grams, change in temp, then the cp by each other not completely sure tho

Empirical formula of ascorbic acid Vitamin C or ascorbic acid is an important nutrient required for healthy growth and development.

The molecular formula of ascorbic acid is C6H8O6. The percentage composition of elements in ascorbic acid is as follows:40.92% of Carbon4.58% of Hydrogen54.50% of Oxygen. To find the empirical formula of ascorbic acid, you need to assume that you have 100 grams of the compound. So, the mass of each element is as follows: Carbon: 40.92 gramsHydrogen: 4.58 gramsOxygen: 54.50 gramsConvert the mass of each element into moles by dividing it by its molar mass. Carbon: 40.92/12.01 = 3.41 moles Hydrogen: 4.58/1.01 = 4.54 molesOxygen: 54.50/16.00 = 3.41 molesNow divide each of the mole values by the smallest mole value, which is 3.41 in this case.Carbon: 3.41 / 3.41 = 1Hydrogen: 4.54 / 3.41 = 1.33Oxygen: 3.41 / 3.41 = 1The mole ratio of C:H:O atoms in the empirical formula is 1:1.33:1.The empirical formula of ascorbic acid is CH4O3.The molecular formula for ascorbic acidThe molecular mass of ascorbic acid is given as 176 amu. The molecular formula is the main answer we're looking for. To find it, you need to divide the molecular mass of ascorbic acid by the empirical formula mass.C6H8O6 empirical formula mass = 12.01 × 6 + 1.01 × 8 + 16.00 × 6 = 176.06 amu. Molecular formula = empirical formula × n176 amu = 176.06 amu × n = n × empirical formula empirical formula is CH4O3 n=5The chemical formula of ascorbic acid is C5H5O5.

The empirical formula of ascorbic acid is CH4O3 and the chemical formula for ascorbic acid is C5H5O5.

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Answer:

CnH2n+2 formula

Explanation:

Alkanes have the general formula CnH2n+2, so if an alkane had 7 carbon atoms, it would have the molecular formula C7H16.

Answer:

CH2

Explanation:

The empirical formula is the simplest formula of a chemical compound. It shows the ratio in which constituent atoms are combined in the compound.

To obtain the empirical formula, we divide the given mass of each element by the relative atomic mass of that element.

C- 36.0 g/12.0 g         H- 6.0g/1.0g

C- 3                             H-6

Divide through by the lowest ratio;

C-3/3                              H- 6/3

C-1                                  H-2

Hence the empirical formula of the compound is

CH2

When magnesium sulfate (MgSO4) is dissolved in water, it undergoes dissociation into its constituent ions. Each MgSO4 molecule separates into one magnesium ion (Mg2+) and one sulfate ion (SO42-).

This dissociation occurs due to the hydration of the ionic compound by water molecules, which surround and separate the individual ions.

The magnesium ion (Mg2+) carries a positive charge because it has lost two electrons, resulting in a 2+ charge. The sulfate ion (SO42-) carries a negative charge due to its ability to accept two electrons, resulting in a 2- charge.

The dissociation process can be represented as follows:

MgSO4(s) → Mg2+(aq) + SO42-(aq)

In an aqueous solution, the magnesium ions and sulfate ions are surrounded by water molecules, forming hydrated ions:

Mg2+(aq) - hydrated magnesium ion

SO42-(aq) - hydrated sulfate ion

These hydrated ions are responsible for the compound's solubility in water. They are free to move around in the solution, conducting electricity and participating in various chemical reactions.

It's important to note that the dissociation of magnesium sulfate into its constituent ions occurs when it is dissolved in water. If the compound is not dissolved or dissolved in a non-aqueous solvent, it will remain as an intact molecule rather than forming ions.

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Answer:

The extraction is done by electolysis but first the aluminium oxide must be melted so that electricity can pass through it...The use of molten cryolite as a solvent reduces some of the Energy

costs involved in extracting aluminum by allowing the ions in aluminum oxide to move freely at low temperature ..

The minimum mass of octane that could be left over is 0.468 grams.

Step 1: Data given

Mass of octane = 3.4 grams

Mass of oxygen = 20.5 grams

Molar mass octane = 114.23 g/mol

Molar mass oxygen = 32.0 g/mol

Step 2: The balanced equation

2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

Step 3: Calculate the number of moles

Moles = mass / molar mass

Moles octane = 3.4 grams / 114.23 g/mol

Moles octane = 0.0297 moles

Moles O₂ = 20.5 grams / 32.0 g/mol

Moles O₂ = 0.640 moles

Step 4: Calculate the limiting reactant

For 2 moles octane we need 25 moles O₂ to produce 16 moles CO₂ and 18 moles H₂O

O₂ is the limiting reactant. It will completely be consumed (0.640 moles). There will react 0.0320/ 12.5 = 0.0256 moles.

There will remain 0.0297 - 0.0256  = 0.0041 moles octane.

Step 5: Calculate mass octane remaining

Mass octane = moles * molar mass

Mass octane = 0.0041 moles * 114.23 g/mol

Mass octane = 0.468 grams

The minimum mass of octane that could be left over is 0.468 grams.

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As heat is added to the solid sample of hexane at -95°C, its potential energy increases. This causes the bonds between the molecules to weaken and eventually break, leading to a transition from a solid to a liquid state. The potential energy continues to increase until the hexane is completely melted.

This refers to the energy of a molecule as a result of the positions of its nuclei, r. This energy of a system of two atoms is based on the distance between them. At large distances the energy is zero, which means “no interaction”.

potential energy of the molecules is calculated using the formula:

P.e = mgh

Where,

P.e =  potential energy

m = mass

g = Gravitational force

h= height

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Answer: protons

Explanation:

The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus. The electrons have a negative electrical charge.

Answer: oh i thought i knew it nvm im sorry love

Explanation:

A, the total number of valence electron is 24 for Silicon Tetrachloride , SiCl₄ .

In Lewis Dot structure S=N-A is used to calculate the total number of shared and unshared electrons in a molecule.

S is the number of shared electrons ,N is the number of total valence shell electrons required by all the atom of the molecule, A is the total number of valence electrons available from all the atoms in the molecule

For SiCl₄,

• We have to first count the valence electron on each atom that is coming to form a molecule .

Valence electron on Si = 4

Valence Electron on Cl = 7

Total valence electron on SiCl₄ = 4+ 4 * 7 = 32

• Then we find the least electronegative atom in the molecule and place it at the center , In SiCl₄ , Si has 1.8 and Cl has 3.16 and so Si is placed at the center and four Cl atoms are connected with a single bond

• A single bond takes up 2 valence electron and so for four bonds 8 valence electrons have been occupied , so we are left with 32-8=24 valence electrons.

Therefore In the Lewis Dot structure S=N-A , Total number of valence electrons available from all the atoms in molecule of SiCl₄ is 24.

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A vector is a mathematical object used to represent quantities that have both magnitude and direction. It is commonly used in mathematics, physics, and other fields to describe physical quantities such as displacement, velocity, force, and acceleration.

Here are some key points about vectors:

Representation: Vectors are typically represented by arrows. The length of the arrow represents the magnitude of the vector, while the direction of the arrow represents the direction of the vector.

Components: Vectors can be broken down into components along specific coordinate axes. In two-dimensional space, a vector can have x and y components, while in three-dimensional space, it can have x, y, and z components.

Magnitude: The magnitude of a vector represents its length or size. It is a scalar value and is denoted by ||v|| or |v|. The magnitude is always a non-negative value.

Direction: The direction of a vector is determined by the angle it makes with a reference axis or another vector. It is often specified using angles or direction cosines.

Given vectors are A = 2.00i + 3.00j - 3.00k, B = -4.00i + 3.00j + 2.00k and C = 8.00i - 7.00j.

Let's find the cross product of A and B:3A × B = (3)(2i j k)(-4 3 2) = -18i - 18j - 18kSo, 3A × B = -18i - 18j - 18k

Now, 2C = 2(8i - 7j) = 16i - 14jTherefore, 2C × (3A × B) = (16i - 14j) × (-18i - 18j - 18k) = -684k - 432i + 504j

Therefore, 2C × (3A × B) = -432i + 504j - 684k

Hence, 2C × (3A × B) = -432i + 504j - 684k.

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The total number of moles, to the nearest tenth, of solute contained in 0. 50 liter of 3. 0 M HCl is 1.5 moles.

To determine the total number of moles of solute in a solution, we need to use the formula:

moles of solute = Molarity x volume in liters

Given that we have a 0.50 L solution of 3.0 M HCl, we can simply substitute the values in the formula to obtain:

moles of HCl = 3.0 mol/L x 0.50 L = 1.5 moles of HCl

Therefore, there are 1.5 moles of HCl in 0.50 liters of 3.0 M HCl solution. We can round this to the nearest tenth, giving us a final answer of 1.5 moles of HCl.

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The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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Answer:

89-91=1 the answer is 1molar mass

This conversion changes the atomic number of the nucleus, which means that the original carbon-14 atom has been transformed into a nitrogen-14 atom.


When carbon-14 undergoes beta decay, it releases a high-energy electron from the nucleus, which is known as a beta particle. The beta particle is ejected from the nucleus along with an antineutrino, a particle with very little mass and no electrical charge. The product of radioactive decay, in this case, is nitrogen-14, as the beta particle carries away one of the neutrons in the nucleus, converting it into a proton.

If carbon-14 is a beta emitter, the likely product of radioactive decay is nitrogen-14.

Carbon-14 undergoes beta decay, which means it emits a beta particle (an electron).
During beta decay, a neutron in the nucleus is converted into a proton.
This conversion increases the atomic number by 1, but the mass number remains the same.
Carbon-14 has an atomic number of 6 and a mass number of 14.
After beta decay, the new atom has an atomic number of 7 (6+1) and a mass number of 14.
An atom with an atomic number of 7 is nitrogen, so the likely product is nitrogen-14 (N-14).

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Answer:  " 13.5 g Al " ;

                    →  that is:  "13.5 grams of aluminum."

____________________________

Explanation:

____________________________

Note: What is missing from the question is the "balanced chemical equation" for the "chemical reaction" that contains:

 The reactants:  "aluminum (Al) " ;  and "chlorine (Cl) " ;  and:

 The product:    "aluminum choloride (AlCl₃) " .

____________________________

The "balanced chemical equation" is:

____________________________

        2 Al   +   3 Cl₂   →   2 AlCl₃   ;

_____________________________

Note: The molecular weight of "aluminum (Al)" is:   " 26.98 g /mol " .

____________________________

So:  We call solve using a technique known as:  "dimensional analysis" :

____________________________

  0.500 mol AlCl₃ * \((\frac{2mol Al}{2mol AlCl_{3} }) * (\frac{26.98g Al}{1 mol Al}) = ?\)

____________________________

Note:  The units of "mol AlCl₃" cancel out to "1' ; and:

          The  units of "mol Al" cancel out to "1" ; and we are left with:

____________________________

 " \(\frac{(0.500 * 2 * 26.98)}{2}\)   g Al ["grams of aluminum"] ;

____________________________

Note: We can "cancel out the "2's" ; since "2/2 = 1 " ; and we have:

 →  (0.500 * 26.98) g Al ;

    = 13.49 g Al ;

         →  Round to 3 (Three) significant figures;

         →  Since:  "0.500" has 3 (Three) significant figures:

____________________________

   =  13.5 g Al ; that is:  "13.5 grams of aluminum."

____________________________

 Hope this is helpful!  

      Best wishes to you in your academic pursuits—and within the "Brainly" community!

____________________________

When 10.0 g of NaCl is added to an aqueous solution of AgNO₃, 24.5 g AgCl will be precipitated.

  The balanced chemical reaction is:

NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)

Molar mass of NaCl = 58.5 g

Molar mass of AgCl = 143.5 g

Number of moles of NaCl =     Given Mass    

                                               Molecular Mass

                                          = 10.0 g ÷ 58.44 g/mol

                                          = 0.171 moles

From the reaction,                                            

58.5 g of NaCl produces 143.5 g of AgCl

10.0 g of NaCl will produce 143.5   × 10.0 = 24.5 g AgCl

                                              58.5

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The balanced equation is SnO₂ + 5/2 H₂ → Sn + 3/2 H₂O.

To balance the equation: SnO₂ + H₂ → Sn + H₂O, we need to ensure that the number of atoms on both sides of the equation is equal.

Start by balancing the atoms of elements that appear in only one compound on each side. In this case, we have tin (Sn) and oxygen (O). We have one Sn on the right side, so we need to balance it with a coefficient of 1 on the left side.

Next, balance the oxygen atoms. We have two O atoms in SnO₂ and one O atom in H₂O, giving us a total of three O atoms on the left side. To balance this, we place a coefficient of 3/2 in front of H₂O, resulting in 3/2 H₂O.

Now, balance the hydrogen (H) atoms. We have four H atoms in H₂ and one H atom in 3/2 H₂O, giving us a total of 5/2 H atoms on the left side. To balance this, we place a coefficient of 5/2 in front of H₂, resulting in 5/2 H₂.

The balanced equation is: SnO₂ + 5/2 H₂ → Sn + 3/2 H₂O.

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Answer:

when the atom is neutral

Explanation:

Answer:

In which organ would you expect the contents of food to be more ground up? (Gizzard)

These external structures are the penis, scrotum, epididymis, and testes. The internal organs of the male reproductive system are called accessory organs. ... To discharge sperm within the female reproductive tract.

Explanation:

2,2,4,4tetramethyl pentane

An acid is a compound that acts as a proton donor. It can be defined as a substance that releases hydrogen ions (H+) when dissolved in water or when reacted with a base. Acids are characterized by their ability to increase the concentration of H+ ions in a solution.

In more specific terms, an acid is a compound that donates a proton (H+) to another substance during a chemical reaction. This definition applies to both inorganic acids, such as hydrochloric acid (HCl), and organic acids, such as acetic acid (CH3COOH).

Acids can be strong or weak, depending on the extent to which they dissociate and release H+ ions. The strength of an acid is typically expressed using the pH scale, which measures the acidity or alkalinity of a solution. Acids have a pH value less than 7, with lower pH values indicating stronger acidity.


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Answer:

the answer is the

first one

The pH of the buffer is 4.60.

To calculate the pH of a buffer, we can use the Henderson-Hasselbalch equation:

\(pH = pKa + log([A-]/[HA])\)

where pKa is the dissociation constant of the weak acid, \([A-]\) is the concentration of the conjugate base, and \([HA]\) is the concentration of the weak acid.

In this case, the weak acid is acetic acid\((HC2H3O2)\), the conjugate base is acetate \((C2H3O2-)\), and the dissociation constant (Ka) is \(1.8 × 10^-5\).

First, we need to calculate the ratio of \([A-]/[HA]\):

\([A-]/[HA] = (0.162 M)/(0.225 M) = 0.72\)

Next, we can substitute the values into the Henderson-Hasselbalch equation:

\(pH = pKa + log([A-]/[HA])\\pH = -log(1.8 × 10^-5) + log(0.72)\)

pH = 4.74 + (-0.14)

pH = 4.60

Therefore, the pH of the buffer is 4.60.

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The options provided, the pH closest to 9.0 is "d) 7.5". The pH 7.5 is likely to work best for the separation of lysine from arginine using ion exchange chromatography.

To determine the pH that is likely to work best for the separation of lysine from arginine using ion exchange chromatography, we need to consider the pKa values of the amino acids.

In ion exchange chromatography, the separation is based on the ionization of functional groups on the amino acids. At a pH below the pKa of an amino acid, the functional group is protonated, while at a pH above the pKa, the functional group is deprotonated.

For lysine, the pKa values are 2.2, 9.1, and 10.5. The first pKa (pk1 = 2.2) corresponds to the ionization of the carboxyl group (COOH), the second pKa (pk2 = 9.1) corresponds to the ionization of the amino group (NH₂), and the third pKa (pkr = 10.5) corresponds to the ionization of the side chain amino group.

For arginine, the pKa values are 1.8, 9.0, and 12.5. The first pKa (pk1 = 1.8) corresponds to the ionization of the carboxyl group (COOH), the second pKa (pk2 = 9.0) corresponds to the ionization of the amino group (NH₂), and the third pKa (pkr = 12.5) corresponds to the ionization of the side chain guanidinium group.

To separate lysine from arginine, we would want to choose a pH that allows one amino acid to be predominantly protonated (more positively charged) while the other is predominantly deprotonated (more negatively charged).

Looking at the pKa values, the pH that is likely to work best for this separation is around the pKa of the amino group (pk2) of arginine, which is 9.0.

Among the options provided, the pH closest to 9.0 is "d) 7.5". Therefore, pH 7.5 is likely to work best for the separation of lysine from arginine using ion exchange chromatography.

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The mas of the ammonia that will dissolve in the 100mL of water at 90 degrees is 10 g. Option A

The solubility curve is a graphical representation of the relationship between temperature and the maximum amount of solute that can be dissolved in a solvent. It shows the solubility of a substance at different temperatures, usually as a line or curve graph.

We can see in this case as we read off the graph that the maximum amount of the ammonia that could dissolve  in 100mL of water at 90 degrees is 10 g

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Answer:

The solubility of NH3 in water at 90 degrees Celsius is approximately 49 g/L. To determine the mass of NH3 that will dissolve in 100 mL of water at this temperature, we can use the following equation:

mass of NH3 = (volume of water in L) x (solubility of NH3 in g/L)

Converting the volume of water from mL to L, we get:

100 mL = 0.1 L

Plugging in the values, we get:

mass of NH3 = (0.1 L) x (49 g/L) = 4.9 g

Therefore, approximately 4.9 grams of NH3 will dissolve in 100 mL of water at 90 degrees Celsius.

Therefore, the answer is 10g

Answer:

A system is a collection of parts that interact together for a common purpose. But a system is not just any old collection of parts. No single part can do the job alone, and any malfunction or delay is likely to affect the whole system. A body system is a set of body parts that do a particular task.

Explanation:

Answer:          .

8575,387w40-7564826=6.626x10-54

Explanation:   .