The sun shines more directly near the equator, bringing more warmth there. In polar regions the sun shines at angles such that
they get little or no sunlight during the winter, causing colder temperatures. Predict how these differences in temperature create a
movement in the atmospheric gases and distribute heat energy from the sun across the planet.
A)
B)
As air in one region diffuses, it becomes less condensed than the
surrounding air and begins to rise and draws more air along.
As air in one region warms, it becomes less dense than the surrounding air
and begins to rise and draws more air in underneath.
As air in one region warms, it becomes less nebulous than the surrounding
air and begins to descend and draws more air in with it.
As air in one region cools, it becomes less compact than the surrounding
air and begins to accelerate and draws more air in supportively.
C)
D)

The Safety Data Sheet (SDS) for regular bleach can be obtained from the manufacturer or supplier of the specific brand or product. It contains important information regarding the hazardous properties, handling, storage, and emergency procedures related to the bleach.

An SDS typically includes details such as the product's chemical composition, physical and chemical properties, potential hazards to health and the environment, precautionary measures for safe handling and storage, first-aid procedures, and information about proper disposal. It also provides guidance on personal protective equipment (PPE) to be used when handling the product and steps to take in case of accidental release or exposure.

The SDS serves as a crucial resource for understanding the potential risks associated with the use of regular bleach and helps ensure that appropriate safety measures are implemented. It is important to review and follow the information provided in the SDS to minimize the risk of accidents, injuries, or adverse health effects associated with the use of the product.

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Answer:

its 2

Explanation:

boron has 6 neutrons and oxygen has 8 neutrons on avg.

the difference is 2 neutrons

Answer: False

Explanation:

resources which are present in unlimited quantity in nature are called as inexhaustible natural resources.

The number of solute (stock solution) needed are 15 mL solute and the number of solvents (water) is needed 10 ml. The correct option is a.

Molarity is the measure of the concentration of any solute per unit volume of the solution.

Given that the 25 mL of a 60 mg/mL solution

Dose in hand = 0.5 g / 5ml =

500 mg / 5ml = 100 mg/ml

D= 60 mg x 25 = 1500 mg

Molarity = n / V

1500 mg / 100 mg/ml = 15 ml solute

The number of solutes then minus by the total stock supply

15 - 5 ml = 10 ml solvent

Thus, the correct option is a. 15 mL solute; 10 mL solvent.

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Answer:

D  The dinosaur could have died due to an meteor crash.

Explanation:

Answer:

D

Explanation:

The dinosaurs fossils were found ten miles away from the meteor crash site. Correct me if I'm wrong

Answer:

See explanation

Explanation:

Relative atomic mass of silicon;

(27.9769  ×  0.9218)  +  (28.9765  ×  0.0471)  +  (29.9738  ×  0.0312) = 28.0891

2)

2AgNO3 (aq) + CaCl2(aq) ----> 2AgCl(s) + Ca(NO3)2(aq)

number of moles of silver nitrate = 1.18 L * 0.113 M = 0.133 moles

Since 2 moles of silver nitrate yields 2 moles of silver chloride

0.133 moles of silver nitrate yields 0.133 * 2/2 = 0.133 moles of AgCl

Since 2 moles of silver nitrate reacts with 1 mole of calcium chloride

0.133 moles of silver nitrate reacts with  0.133 moles * 1/2 = 0.0665 moles of CaCl2

n =CV

C =n/V = 0.0665 moles/3.28 L = 0.02 M

3) H2SO4(aq) + 2KOH(aq) -------> K2SO4(aq) + 2H20(l)

CA = concentration of acid = 1.5 M

VA = volume of acid  23.7 ml

CB = concentration of base = ?

VB= volume of base = 50 ml

NA = number of moles of acid =1

Number of moles of base = 2

From;

CAVA/CBVB =NA/NB

CAVANB = CBVBNA

CB = CAVANB/VBNA

CB = 1.5 * 23.7 * 2/ 50 * 2

CB = 0.711 M

4) Number of moles of KMnO4 = 1.68 * 19.8/1000 = 0.033 moles

If 2 moles of KMnO4 reacts with 1 mole of H2O2

0.033 moles of KMnO4 reacts with  0.033 * 1/2 = 0.0165 moles of H2O2

molar mass of H2O2 = 34 g/mol

mass of H2O2 = 0.0165 moles of H2O2 * 34 g/mol = 0.56 g of H2O2

Answer:

1.8 m³

Explanation:

To find the volume, you need to multiply the given mass by the density. Density can serve as a conversion between mass (kg) and volume (m³) because it is a ratio which represents the mass (kg) of a piece of wood per every 1 m³. It is important to arrange this ratio in a way that allows for the cancellation of units (kg should be in the denominator to cancel the units of the given mass). The final answer should have 2 sig figs like the given mass (1.5 = 2 sig figs).

Denisty: 0.82 kg/m³

   1.5 kg                 1 m³
---------------  x  --------------------  =  1.8 m³
                           0.82 kg

Explanation:

The periodic table

Periodic Trends: Electron Affinity

-----

Chlorine is an element that is less electronegative than oxygen, but it has the highest electron affinity of any element.

Affinity can refer to the tendency of an atom to combine by chemical reaction with atoms or compounds or the electronic property by which dissimilar chemical species are capable of forming chemical compounds.

Answer: Cl and because of its highest electron affinity.

Answer:

Singlet oxygen

Explanation:

Singlet oxygen is more reactive than chlorine I believe. Chlorine is also a singlet which is why it readily attacks and bleaches organic compounds while atmospheric oxygen does not.

Have great day♡

Answer:

Gas

Explanation:

Answer:

gas

Explanation:

Answer:

Nickel Nitrate

Answer:

9.9 x 10^-2 g*cm²/s²

Explanation:

9.9 × 10^-9 kg*m²/s² =    g*cm²/s²

1 kg*m²/s² = 1 joule(s)

1 g*cm²/s² = 1 erg(s)

britannica

1 kg = 1000g = 1x10^3 g

1 m²= 10000 cm² = 1x10^4 cm²

add the exponents 3 and 4 which = 7

-9 + 7 = -2

9.9 × 10^-9 kg*m²/s² = 9.9 x 10^-2 g*cm²/s²

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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The statement correct about about the pure substance is option 3. It cannot be physically broken down into different types of molecules.

Pure substance are substance with a definite proportion of its constituent atoms or molecules which cannot be physically separated and does not contain any impurities.

For example,  water, fruit pulp, gaseous elements, metals, salt crystals etc. They contains only one type of molecules and are not mixtures of different type of molecules.

Therefore, pure substances cannot be physically broken down into different types of atoms. Hence, option 3  is correct.

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Answer:

its sodium hydroxide

Explanation:

Step 1

The reaction involved:

2 KClO3 => 2 KCl + 3 O2 (completed and balanced)

------------

Step 2

Data provided:

Mass of KClO3 = 163.27 g

---

Data needed:

The molar mass of:

KClO3) 122.6 g/mol

O2) 32.00 g/mol

-------------

Step 3

Procedure:

By stoichiometry,

2 KClO3 => 2 KCl + 3 O2

2 x 122.6 g KClO3 ------ 3 x 32.00 g O2

163.27 g KClO3 ------ X

X = 163.27 g KClO3 x 3 x 32.00 g O2/2 x 122.6 g KClO3

X = 63.92 g

Answer: 63.95 g (the nearest value)

Answer:

D. It is limited to situations that involve aqueous solutions or specific compounds.

Explanation:

An Arrhenius acid is a substance that increases the concentration of H3O or H+ when dissolved in water. An Arrhenius base is a substance that increases the concentration of OH- when dissolved in water. These definitions tell us that D is indeed limited to situations that involve aqueous solutions or specific compounds, as aqueous means something that's dissolved in water.

A is wrong because the Bronsted-Lowry interpretation has a wider range of applications. Bronsted-Lowry acids and bases don't even need to be aqueous, so it is not limited to just aqueous solutions. They include any substance that can donate or accept a H+.

B is wrong because A is wrong. A and B basically say the same thing, that the Arrhenius interpretation has a wider range of applications than the Bronsted-Lowry interpretation.

C is wrong because the definition of an Arrhenius base is any substance that increases the concentration of OH-, or hydroxide ions. C completely counters this statement.

Here's photo for proof incase you're doubtful of my answer & explanation. Please click the heart if it helped.

Answer:

Which statement describes the Arrhenius interpretation of acids and bases?

❌ A) It has a wider range of applications than the Bronsted-Lowry interpretation.

❌ B) It has a wider range of applications than the Lewis and Bronsted-Lowry interpretations.

❌ C) It is used in situations that involve bases that do not produce hydroxide ions.

I Took Question Test And Have Nice Day.

0.25 mole of hydrogen contains 1.5 * 10^23 molecules  of hydrogen gas.

We have to know that the number of molecules in one mole of a substance is obtained from the Avogadro's number.

We know that;

1 mole of hydrogen contains 6.02 × 10^23 molecules of hydrogen

0.25 mole of hydrogen contains 0.25 mole × 6.02 × 10^23 molecules/1 mole

= 1.5 * 10^23 molecules

Therefore, 0.25 mole of hydrogen contains 1.5 * 10^23 molecules  of hydrogen gas.

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3.786137931L of chlorine are needed.

1st) It is necessary to write the balanced equation of the reaction between chlorine gas (Cl2) and sodium (Na) to produce sodium chloride (NaCl):

Now we know that 1 mol of chlorine gas is needed to react with 2 moles of sodium in the production of sodium chloride. With the molar mass of Na (23.0g/mol) and Cl2 (71.0g/mol), we can see that 71.0g of Cl2 are needed to react with 46.0g of sodium.

2nd) Knowing that 71.0g of Cl2 are needed to react with 46.0g of sodium, we can use a mathematical rule of three to calculate the amount of Cl2 that will react completely with 12.0g of sodium:

3rd) Now it is necessary to convert the mass of chlorine gas into moles, so we can use it in the Ideal gas formula:

So, 0.26 moles of chlorine gas are needed.

4th) With the formula of Ideal gases and replacing the values of Pressure (P), number of moles (n) and Temperature (T, in Kelvin), we can calculate the volume of Cl2:

Finally, 3.786137931L of chlorine are needed to react completely with 12.0g of sodiu.

Answer:

Ka = 4.70x10⁻⁴M

Explanation:

The general dissociation of a weak acid, HX, is:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

And Ka is written as:

Ka = [H⁺] [X⁻] / [HX]

Where [] represents the molar concentration in equilibrium of each specie.

The equilibrium is reached when X of HX is dissociate in X H⁺ and X X⁻, that is:

[HX] = 0.0129M - X

[H⁺] = X

[X⁻] = X

As pH = -log [H⁺]:

10^-pH = [H⁺] = X  = 2.239x10⁻³M

Solving:

[HX] = 0.0129M - 2.239x10⁻³M = 0.01066M

[H⁺] = 2.239x10⁻³M

[X⁻] = 2.239x10⁻³M

Ka = [H⁺] [X⁻] / [HX]

Ka = [2.239x10⁻³M] [2.239x10⁻³M] / [0.01066M]

The four quantum numbers that identify the highest energy electron in a francium, fr, atomic orbital are n, ℓ, m, and s.

The energy levels of an atom are connected by a set of quantum numbers. The entire and singular quantum state of a single electron in an atom, also known as its wave function or orbital, is described and explained by the four quantum numbers, n, l, m, and s. Accordingly, the four quantum numbers are n, l, m, and s.

The quantum number is used to define the location of electrons, and an orbital is a place inside the atom where an electron can be found. The quantum number of the shell orbitals of an atom depends on the number of electron shells it contains.

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According to the given statement Na of the atoms listed below has the largest radius.

An atom is made up of a core nucleus and one or even more electrons with negative charges that orbit it. The positively charged, comparatively hefty protons and neutrons that make it up the nucleus may be present. The fundamental building components of matter are atoms.

Atoms are made up of a nucleus in the center that is surrounded by protons, neutrons, and electron. Uranium is divided into smaller atoms during the fission process, creating new atoms. The creation or atoms in enormous numbers can be seen in the Big Bang and Supernova phenomena.

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Explanation:

One mol of a gas at STP (standard conditions of pressure and temperature) occupies 22.4 L. So we can convert the mass of sulfur dioxide to moles and then use that relationship to get the answer to our problem.

To convert from grams to moles we will use the molar mass of sulfur dioxide.

sulfur dioxide = SO₂

molar mass of S = 32.07 g/mol

molar mass of O = 16.00 g/mol

molar mass of SO₂ = 1 * 32.07 g/mol + 2 * 16.00 g/mol

molar mass of SO₂ = 64.07 g/mol

moles of SO₂ = 325 g * 1 mol/(64.07 g)

moles of SO₂ = 5.07 moles

We said that 1 mol of SO₂ at STP will occupy 22.4 L, let's find the volume at STP of 5.07 moles.

Answer:

Answer:

ok, here is your answer

Explanation:

i am going to solve this problem by using the ICE table method which is an easy method to determine the pH of a weak base with the given data of the problem.Given:Initial volume of NH3 solution (Vi) = 75.0 mLInitial concentration of NH3 solution (Ci) = 0.200 MInitial moles of NH3 solution (Ni) = Ci x Vi = 0.200 M x 75.0 mL = 0.0150 molesKb = 1.8 x 10^-5Moles of HNO3 added (n) = 0.500 M x 17.0 mL = 0.00850 molesVolume of NH3 solution after the addition of HNO3 (Vf) = 75.0 mL + 17.0 mL = 92.0 mLConcentration of NH3 solution after the addition of HNO3 (Cf) = Ni / Vf = 0.0150 moles / 92.0 mL = 0.163 MTo find the pH after the addition of 17.0 mL of HNO3, we need to use the ICE table method.ICE table method:Initial: NH3 + H2O ⇌ NH4+ + OH-Change: -x 0 +x +xEquilibrium: 0.0150 - x 0 x xKb = [NH4+][OH-] / [NH3]1.8 x 10^-5 = x^2 / 0.163Solving for x, x = 0.00171 M[OH-] = 0.00171 M[OH-] = Kw / [H3O+] = 1.0 x 10^-14 / [H3O+][H3O+] = 5.85 x 10^-12pH = -log[H3O+]pH = -log(5.85 x 10^-12)pH = 11.23Therefore, the pH after the addition of 17.0 mL of HNO3 is approximately 11.23.

The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

Hydrogen bonding is a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom. It results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Explanation:

Answer:Protons carry a positive electrical charge and they alone determine the charge of the nucleus. Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number. For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium and thats your answer

Explanation:

yurrrrrrr

58.2 g of copper (II) phosphate is equal to 0.153 moles.

To find the number of moles in 58.2 g of copper (II) phosphate, we need to divide the mass by the molar mass of the compound.

The molar mass of copper (II) phosphate can be calculated by adding the atomic masses of copper, phosphorus, and oxygen :

Cu3(PO4)2

Cu: 63.5 g/mol

P: 31 g/mol

O: 16 g/mol (there are 8 oxygen atoms in the molecule)

Molar mass of Cu3(PO4)2 = 3(63.5) + 2(31) + 8(16) = 380.5 g/mol

Now we can find the number of moles:

moles = mass / molar mass

moles = 58.2 g / 380.5 g/mol

moles ≅ 0.153 moles

Therefore, 58.2 g of copper (II) phosphate is equal to 0.153 moles.

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Answer:

6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms

Explanation:

Answer:

This question appears incomplete

Explanation:

This question appears incomplete because the data provided only makes it possible to calculate the certainty of the acetic acid content per total volume of the vinegar. Thus, the 4% means for every 100 mL of the vinegar, there is 4 mL of acetic acid present. To calculate the volume of acetic acid in any other volume of vinegar, the formula will be

volume of acetic acid = 4/100 × total volume of vinegar

Answer:

\no

Explanation: