A car is traveling 65.0 miles per hour. Convert this to meters per second.

Answer:

double bond

Explanation:

Sometimes two covalent bonds are formed between two atoms by each atom sharing two electrons, for a total of four shared electrons. For example, in the formation of the oxygen molecule, each atom of oxygen forms two bonds to the other oxygen atom, producing the molecule O2. Similarly, in carbon dioxide (CO2), two double bonds are formed between the carbon and each of the two oxygen atoms

Reactants are the initial substances in a reaction that go through a chemical transformation to create a product.

Thus, Only in the presence of favourable conditions will reactants undergo chemical reactions. Many reactions occur during the cooking of gumbo, but I'll focus on one of the first ones to highlight a favourable circumstance: the caramelization of onions.

Our taste senses cannot perceive the big sug1ar molecules found in raw onions. To release the sweet flavour of onions, these big sugars must be heated to break down into smaller reactants.

The pyrolysis of sugars is the technical term for this procedure. The ideal circumstance necessary for onions to caramelize is products.

Thus, Reactants are the initial substances in a reaction that go through a chemical transformation to create a product.

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Answer:

Which set of orbitals are degenerate?

Degenerate is used in quantum mechanics to mean 'of equal energy. ' It usually refers to electron energy levels or sublevels. For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy, as shown in the diagram.

Explanation:

Answer:

Electron orbitals having the same energy levels are called degenerate orbitals, For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy.

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 21 g

volume = 7 cm³

We have

\(density = \frac{21}{7} = 3 \\ \)

We have the final answer as

Hope this helps you

Answer:

3g/cm3

Explanation:

The density equation is M over V so you divide the mass by the volume. You do 21 divided by 7 and you get 3

Answer:

C) one magnesium and one oxygen

Answer:

Which of the following describes the location of the polar climate zone? Near the North Pole and South Pole.

The moles of NaOH used is 0.0008 moles

The molarity of the acid  is 0.008 M

The molarity of the acid is found as follows:

Moles of NaOH used = concentration of NaOH × volume of NaOH used

the average volume of NaOH used = 8.0 mL

moles of NaOH = 0.1 M × 8.0 mL

moles of NaOH = 0.0008 moles

Molarity of acid:

Assuming the acid is monobasic, the mole ratio of acid to base is 1 : 1

The volume of acid used is 100 mL

The molarity of acid = moles of acid / volume of acid in liters

The molarity of acid = 0.0008 moles / 0.1 L

The molarity of acid  = 0.008 M

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The Keq for the reaction will be 0.89.

The concentration of CO2 Will be 1.67M.

The equilibrium constant (Keq) for the reaction formulated as Keq = [H2O]^2 / ([H2]^2 [O2]), can be evaluated using the given concentrations of hydrogen and oxygen.

After applying both their respective quantities, we arrive at a calculated value of 0.89 for Keq. Moving on, to calculate the concentration of CO2 in the equation H2O (1) + CO2 (g) → H2CO3 (aq), where Keq = [H2CO3] / ([H2O] [CO₂]), having been supplied with a value of Keq equal to 0.15 and H2CO3 being at 0.25M, the rearranged expression reveals that [CO2] equals 1.67 M following basic algebraic substitution.

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Answer:

metal cann't pass non metal can  pass through electicity

Explanation:

When HCl is added to aqueous solution of sodium sulphate aqueous solution, sulfuric acid is formed, and the solution's chemical makeup and acidity get changed.

Thus, several chemical reactions happen when HCl is introduced to a sodium sulphate aqueous solution. While sodium sulphate breaks down into 2 Na+ ions and SO4^2- ions, HCl splits into H+ and Cl- ions. When the H+ ions from HCl interact with the SO4^2- ions, sulfuric acid, a more potent acid, is created.

The solution's H+ ion concentration rises as a result of this reaction, altering the equilibrium in favor of the products. As a result, the system's equilibrium is upset, which causes sulfuric acid to form. The solution's chemical makeup and acidity ultimately alter as a result of the addition of HCl.

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The number of significant figures contained in the following values are as follows:

Significant figures are digits that is meaningful with respect to the precision of a measurement.

Significant figures are digits that is nonzero, followed by a nonzero digit, or (for trailing zeroes) justified by the precision of the derivation or measurement.

According to this question, the number of significant figures contained in the following values are as follows:

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Answer:

0.12 dm³ or 120 cm³

Explanation:

Hi there!

so first step find the number of moles

number of moles = mass ÷ Ar ( since o is an element and when it is alone, it is a diatomic molecule {O2} )

number of moles = mass ÷ Ar

number of moles = 0.16 ÷ ( 16 × 2 )

= 0.16 ÷ 32

= 5 × 10 ( power -3)

1 mol of O2 = 24 dm³ or 24 000 cm³

5 × 10 ( power -3) of O2 = (5 × 10 ( power -3)) × 24

= 0.12 dm³

or

= (5 × 10 ( power -3)) × 24 000

= 120 cm³

To produce MgO, two moles of Mg are required for one mole of oxygen gas. The number of moles of O₂ in 5 g is 0.15 and needs 0.31 moles of Mg. But there is only 0.20 moles of Mg in 5 g. Hence, 0.11 mole of oxygen goes excess.

Magnesium oxide is formed by the reaction of Mg metal with oxygen gas as written below:

\(\rm 2Mg + O_{2} \rightarrow 2 MgO\)

Mass of Mg = 24 g/mol

number of moles in 5 g = 5/24 = 0.20

mass of oxygen = 32 g/mol

number of moles in 5 g = 5 /32 = 0.156

one mole of oxygen gas needs 2 moles of Mg. Hence, 0.15 moles needs 0.31 moles. There is only 0.20 moles. Hence Mg is the limiting reactant. And oxygen goes excess by 0.11 moles.

Two moles of Mg produces 2 moles of MgO. Hence, 0.208 moles produces 0.20 moles or 8.32 g of MgO  (molar mass- 40 g/mol).

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Answer:cathode

Explanation:It is also known as the galvanic cell or electrochemical cell. In the voltaic cell, the oxidation occurs at an anode which is a negative electrode and the reduction occurs at the cathode which is a positive electrode.

The concept ideal gas equation is used here to determine the volume of the carbondioxide. Combustion reactions are generally highly exothermic reactions. The volume of CO₂ is

A combustion is a chemical reaction in which a fuel undergoes oxidation as a result of the reaction with an oxidizing agent which causes the release of energy in the form of heat.

15.0 °C = 288 K

The ideal gas equation is:

PV = nRT

V = nRT / P

V = 354 × 0.0821 × 288 / 0.995 = 8412.3 L

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n(mole)=mass: MM(molar mass)

n = 15 : 60

n = 0.25

There are 0.2494 moles of SiO₂ in 15.0 grams of SiO₂.

Moles (mol) are a unit of measurement used to express the amount of a substance. One mole of a substance is equal to the Avogadro's number (approximately 6.022 × 10²³) of particles, such as atoms, molecules, ions, or formula units.

Moles are used to convert between the mass of a substance and its number of particles, as well as to calculate the stoichiometry of chemical reactions. The number of moles of a substance can be determined by dividing the mass of the substance by its molar mass, which is the mass of one mole of that substance.

The molar mass of SiO₂ can be calculated as:

= (1 × Si atomic mass) + (2 × O atomic mass)

= (1 × 28.0855 g/mol) + (2 × 15.9994 g/mol)

= 60.0843 g/mol

moles = 15.0 g / 60.0843 g/mol

= 0.2494 moles

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Answer:

Empirical Formula = Al3O4 .

Explanation:

Mass of Aluminium = 0.3000 g

Mass of Oxygen in oxide = 0.5333 g - 0.3000 g = 0.2333 g

Moles of Aluminium = Mass / MOlar Mass = 0.3000 g / 27 g = 0.01112 moles

Moles of Oxygen = Mass / Molar Mass =0.2333 g / 16 g = 0.01458 moles

Now we will divide each of the molar quantities by the smallest number of moles.

Aluminium : 0.01112 moles / 0.01112 moles = 1

Oxygen : 0.01458 moles/ 0.01112 moles =1.31

Since, the ratio between Al and O is 1:1.31 which is not the smallest whole numebr ratio. SO, we will multiply it by the smallest number to get whole number ratios.

So, Here on multiplying the ratio by 3 ,we get Al : O = 3:4.

The experimental empirical formula of the aluminum oxide is Al₂O₃.

To determine the empirical formula of the aluminum oxide, we need to calculate the mole ratios of aluminum (Al) and oxygen (O) based on the given masses.

Convert the masses of aluminum and aluminum oxide to moles:

Determine the mole ratio of Al to Al₂O₃:

Simplify the mole ratio to obtain the empirical formula:

It is important to note that the given experimental data and the resulting empirical formula are based on the assumption that the reaction went to completion and that the measurements were accurate. Further confirmation and analysis, such as using additional experimental techniques or calculations, may be necessary to verify the empirical formula.

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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.

The concentration of the solution is 0.3 mol/L.

We know that concentration is the amount of substances that is present. We know that the concentration can be measured by the use of several units and one of the units that we can be able to use is the  mol/L.

We have that the concentration in w/w is 5.0% and this means that the mass of water in the solution is 5g. From the density of the solution;

volume = mass/density

= 5g/  1.000 g/mL

= 5 mL or 0.005 L

Number of moles of sugar = 5g/342.30 g/mol

= 0.015 moles

Concentration = Number of moles/volume

=  0.015 moles/0.005 L

= 0.3 mol/L

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Answer:

7.51

×

10

24

The density

ρ

of a sample is its ratio of mass

m

to volume

V

:

ρ

=

m

V

.

To find the number of atoms in this sample, first multiply the volume by the density to get the mass. Then divide this mass by the mass of one atom.

133

c

m

3

T

a

(

17.0

g

1

c

m

3

)

(

1

atom

T

a

3.01

×

10

−

22

g

T

a

)

=

7.51

×

10

24

Ta atoms

Xeriscaping is a landscaping approach that focuses on conserving water by using drought-tolerant plants and efficient irrigation techniques. The goal is to create a visually appealing and sustainable garden while minimizing water usage.

Successful xeriscaping projects involve several key elements. Firstly, careful plant selection is crucial, opting for species that can thrive in arid conditions without excessive watering. Mulching is used to reduce evaporation and retain soil moisture.

Proper soil preparation, such as improving drainage and adding organic matter, promotes healthier plant growth. Efficient irrigation systems, like drip irrigation or soaker hoses, deliver water directly to plant roots, minimizing wastage.

Additionally, controlling erosion through the use of retaining walls or terracing is important. Lastly, regular maintenance, including appropriate pruning and weed control, ensures the longevity and vitality of the xeriscape garden. Overall, a successful xeriscaping project harmonizes sustainable practices with a beautiful outdoor environment.

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Folded mountains like the Himalayan mountains form along convergent boundary, both continental crust plates. Therefore, the correct option is option C.

A mountain is an elevated area of the crust of the Earth, typically having steep sides that reveal a substantial amount of bedrock that has been exposed. Despite the fact that there are several definitions.

A mountain is normally taller than a hill, reaching typically at least 300 meters (1,000 feet) above sea level, and differs from a plateau in that it has a smaller top area. Folded mountains like the Himalayan mountains form along convergent boundary, both continental crust plates.

Therefore, the correct option is option C.

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Functional group can be interconverted into each their by the means of suitable reagent. Functional group are responsible for the chemical and physical properties of a compound. Therefore in the below given ways compound can bee classified.

A group of atoms forming a component of a molecule that accounts for a particular function or chemical behavior is called a functional group. There are so many functional group in organic chemistry.

first compound--------  secondary (2°)

second compound--------------  secondary (2°)

third compound-------------------- tertiary (3°)

fourth compound ----------------primary (1°)

fifth compound---------------primary (1°)

Therefore in the above given ways compound can bee classified.

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The relative atomic mass of the rubidium atom could be calculated from the data provided as 85.46.

When we talk about an isotope, we are referring to the idea that we could have tow or more atoms of the same element that have the same atomic number but do not have the same mass number. Given that the atomic number is the number of protons, it then follows that the two elements as we know them does differ only in the number of the neutrons that they have. The atoms that we have thus described in the several lines above are other wise called the isotopes of the element. We have in the image of the question a clear example of what an isotope is and we now want to find the relative atomic mass of Rubidium.

The relative atomic mass can be obtained from the use of the formula;

(84.9118 * 72.2/100) + (86.9092 * 27.8/100)

= (61.30 + 24.16)

= 85.46

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Explanation:

Hence an atom is made up of three particles called electrons, protons and neutrons and 1 mol exactly contains 6.02214076×1023 atoms or particles. Thus 2.11×1024 atoms are present in 3.5 mol of arsenic.

Answer:

c Thomson's cathode ray tube experiment

Answer:

To lower the activation energy of a reaction

Explanation:

i just took the test and got it right ...... i hope this helps :)

Answer:

Explanation:

Determine the amount of KOH present in the resulting solution. KOH was initially 0.00875 mol, then 0.00525 mol of it interacted with HCl. As a result, 0.00875 mole - 0.00525 mol (= 0.00350 mol of KOH is left. The resulting solution has a volume of 70.0 mL (35.0 mL plus 35.0 mL).

The titrant (NaOH), which is added gradually throughout the course of a titration, is added to the unknown substance. The equivalency point is the moment at which precisely the right quantity of titrant (NaOH) has indeed been added that react to the entire analyte (HCl).

What took place during titration: One mole of NaOH interacts with one mole of HCl inside the reaction between the two substances. NaOH with HCl equals NaCl plus H2O. (NaOH and HCl have a mole ratio of 1:1.) • The NaOH concentration is 0.1 M, or 0.1 molecules per litre.

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Ai. The car's initial kinetic energy is 22657.94 J

Aii. The car's initial potential energy is 939960.1 J

B. The car's final kinetic energy is 171420.38 J

C. The car's change in kinetic energy is 148762.44 J

Ai. How do I determine the car's initial kinetic energy?

We can obtain the initial kinetic energy of the car as illustrated below:

KE₁ = ½mu²

KE₁ = ½ × 566.99 × 8.94²

KE₁ = 22657.94 J

Aii. How do I determine the car's initial potential energy?

The car's initial potential energy can be obtained as shown below:

PE₁ = mgh

PE₁ = 566.99 × 9.8 × 169.164

PE₁ = 939960.1 J

B. How do I determine the car's final kinetic energy?

The final kinetic energy of the car can be obtained as illustrated below:

KE₂ = ½mv²

KE₂ = ½ × 566.99 × 24.59²

KE₂ = 171420.38 J

C. How do I determine the car's change in kinetic energy?

The change in the kinetic energy of the car can be obtained as follow:

ΔKE = KE₂ - KE₁

ΔKE = 171420.38 - 22657.94

ΔKE = 148762.44 J

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