How many bonds are broken in the balanced reaction of the combustion of nitric oxide.

[tex]HClO_4 + NaOH[/tex]   →    [tex]NaClO_4 + H_2O[/tex]    Is the net ionic reaction when sodium hydroxide and hypochlorous acid is combined.

When the combine acid and base, neutralization reaction occurs which results in formation of salt and water because

          Acid + Base     →       Salt + Water

This reaction is known as neutralization reaction.

Here, Sodium hydroxide is base and hypochlorous acid is an acid .

So salt [tex]NaClO_4[/tex] and water is formed.

This reaction is also an example of double displacement reaction.

[tex]HClO_4 and NaOH[/tex]  breaks into [tex]H^{+} , ClO_4^{-} and Na^{+} , OH^{-}[/tex] ions respectively and displaces other ion from other compound.

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From the options provided for the element, a gas is a property that neon may have based on its location in the periodic table.

Neon is an inert gas. The elements of group 8 A are the inert gases. They are - Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe) and Radon (Rn). Inert gases are stable and they are not reactive chemically.. Inert gases are also called as noble gases.

Neon element is a gas which cannot be shiny or dull. It is clear and colorless. So, it cannot have this property.

Neon element is an inert gas. They have complete valence shells and do not have any free electrons. Therefore, they are poor conductors of electricity.

Neon element belongs to the group 8, which is inert gas. Therefore, it has property of gas.

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Answer:

A for number 3 and C for number 4

Explanation:

I hope you pass this homework

Through unit conversion, it has been determined that a crystal of sugar contains 45,000 atoms.

The problem can be solved through unit conversion. The atoms of the table sugar, with a molecular formula of C12H22O11, are 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms. As stated in the problem, a molecule of sugar has 45 atoms and a crystal of sugar has 1000 molecules.

In solving for the number of atoms in a sugar crystal, we will be getting the product between the number of molecules per crystal of sugar to the number of atoms per molecule.

(1000 molecules of sugar/crystal of sugar) * (45 atoms of sugar/molecule of sugar) = 45,000 atoms of sugar/crystal of sugar.

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Answer:

5 g

Explanation:

50/10 = 5,

25/5 = 5grams

hope this works: )

The significant digits are

4 significant digits (addition) = -3.220g

subtract: -5.820g, which has four significant digits.

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Answer:

nucleate boiling where small bubbles of vapour form at discrete points, and critical heat flux boiling where the boiling surface is heated above a certain critical temperature and a film of vapor forms on the surface.

Explanation:

hope this helps :3

Answer:mark pls

Explanation:

The AgCl would be least soluble in 0.1M NaCl

Strength of NaCl Solution = 0.1M

K(sp) AgCl = 1.20 * 10⁻¹⁰

Let solubility of AgCl be 'x'

∴ AgCl ⇔ Ag⁺ + Cl⁻

     x           x       x

∵ NaCl is strong electrolyte and is completely ionized. It shall provide Cl⁻ ion concentration = 0.1 M

[Ag⁺] = x                   [Cl⁻] = (x + 0.1) M

K(sp) = [Ag⁺] [Cl⁻] = x * (x + 0.1) = x² + 0.1x

∵ x << 1    ∴ x² is neglected

       ∴ 1.20 * 10⁻¹⁰ = 0.1x

         ⇒ [tex]x = \frac{1.20 * 10^{-10}}{0.1} = 1.20 * 10^{-9}[/tex]

Solubility of AgCl in 0.1M NaCl = 1.20 * 10⁻⁹M

By above method we find other four parts then we get,

Solubility of AgCl in 0.1M HCl = 1.8 * 10⁻¹⁰M

Solubility of AgCl in 0.1M NH₃ = 4.846 * 10⁻³M

Solubility of AgCl in 0.1M CaCl₂ = 1.8 * 10⁻¹⁰M

Solubility of AgCl in Pure Water = 1.5 * 10⁻¹⁰M

The order of solubility of AgCl in 1. 0.1M HNO₃. 2. 0.1M HCl. 3. 0.1M NH₃. 4. 0.1M CaCl₂. 5. Pure Water :-

0.1M NaCl < Pure Water < 0.1M HCl = 0.1M CaCl₂ < 0.1M NH₃

Thus, the AgCl would be least soluble in 0.1M NaCl

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The average atomic mass of Mg is 24.30505 u

The average atomic mass of Mg (0.7899 x 23.98504) + (0.100 x 24.98584) + (0.1101 x 25.98259)

= 24.30505 u

The total average mass of the atoms in a naturally occurring sample of an element is the average atomic mass, also known as atomic weight. The most common unit of measurement for average masses is the unified atomic mass unit (u), which is equal to precisely one-twelfth of the mass of a neutral carbon-12 atom.

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The reported value of adding 4.56 g to 0.01860 g to the correct significant figures will be 4.58 g.

According to one of the rules guiding addition operation in significant figures., the number with the lowest significant figure to the right of the decimal place determines the number of significant figures in the final answer.

Thus, in operation: 4.56 + 0.01860, the number with the lowest significant figures to the right of the decimal place is 4.56 with 2 significant figures after the decimal place.

In other words, the final answer of the operation will also have two significant figures after the decimal.

Hence;

                     4.56 + 0.01860 = 4.58 g

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The maximum mass of carbon dioxide released in the atmosphere is 6072 g/mole.

Mass is defined as a dimensionless quantity representing the amount of matter in a particle or object.

1 kg = 1000gso 2kg = 2000g

To calculate mass of carbon dioxide released in atmosphere when butane gas is burned is:

Number of mole of butane = given mass/ molar mass

                                             = 2000g/58g/mole = 34.5 moles

1 mole of butane produce 4 mole of CO2

34.5 moles of butane = 4 x 34.5 = 138 mole

Maximum mass of CO2 released = number of mole x molar mass

                                                       = 138 mole x 44 g/ mole

                                                       = 6072 g/ mole

Thus, the maximum mass of carbon dioxide released in the atmosphere is 6072 g/mole.

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0.0105 mol of non-electrolyte solute, with 297.14 g/mol molar mass, is dissolved in water to make a 0.0488 M solution.

Given:

Osmotic pressure is expressed mathematically as π=M*R*T. The concentration of the solution "M" should be expressed in molarity, mol/L. Through the use of the formula, let us solve for the concentration of the solution. The osmotic pressure must be converted to atm.

Conversion factor: 1 atm has 760 torr.

913 torr * (1 atm/760 torr) = 1.20131 atm

π = 1.20131 atm = M*(0.08206 L-atm/mol-K)*(300 K)

M = 0.0488 M

From the molar concentration of the solution, we can solve for the number of moles of the solute.

M = mol solute / volume solution

mol solute = M * volume solution

mol solute = 0.0488 M * (215 mL) * (1 L/1000 mL)

mol solute = 0.0105 mol

Then, we can solve for the molar mass of the solute.

molar mass solute = mass solute / mol solute

molar mass solute = 3.12 g / 0.0105 mol

molar mass solute = 297.14 g/mol

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8 x 10^12 kg C yr^-1  of C were placed in the atmosphere each year.

kg of C yr-^1  = (8 Pg C yr^-1)(10^15 g C/1 Pg C)(1 kg C/1000 g C)

kg of C yr^-1  = 8 x 10^12 kg C yr^-1

Petagrams is unit of mass equal to 1,000,000,000,000,000 (10^15) grams. Symbol: Pg

Sometimes used in Carbon Dioxide numbers, it is equivalent to Metric Gigatons (Giga) 10^9 x (Ton) 10^3 x (kg) 10^3 = 10^15

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A is 14.03 in the given equation y = Ax + (Bx^2)/2, if we substitute y = 23.2, x = 1.40 and B = 3.63.

This is an algebraic equation with two variables of order 2. The values of x, y and the coefficient of x^2 is given here.

The given equation y = Ax + (Bx^2)/2 has the variables A, x, y, and B.

By substituting the variables y, x, and B, we can get A from the equation.

y = 23.2

x = 1.40

B = 3.63

Substituting these values,

23.2 = A*1.40 + (3.63*1.4^2)/2

23.2 = 1.4A + 3.63*1.96/2

23.2 = 1.4A + 7.1148/2

23.2 - 3.5574 = 1.4A

1.4A = 19.6426

A = 19.6426/1.4

A = 14.03

Therefore, A = 14.03

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The equation below is photosynthesis .

6CO₂ + 6H₂O → [tex]C_{6} H_{12} O_{6}[/tex] + 6O₂

Water and carbon dioxide are converted into food by the process of photosynthesis , which occurs in the presence of sunlight in plants and photosynthetic bacteria . They create oxygen as a byproduct and glucose as the food . The photosynthesis equation is given as ,

6CO₂ + 6H₂O → [tex]C_{6} H_{12} O_{6}[/tex] + 6O₂

This indicates that the reactants, six carbon dioxide molecules and six water molecules, are transformed into a sugar molecule and six oxygen molecules, the products, by light energy being absorbed by chlorophyll (implied by the arrow).

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Answer: I don't know try your best

Explanation:

The diatomic gas is Fluorine

Given:

mass of diatomic gas = 4.37-g

volume of diatomic gas = 3 l

temperature = 45°c = 318 K

R in Lt-atm scale 0.08205736(14) L-atm/K-mol

~ 0.082

To Find:

identify this gas

Solution: Working equation: PV = nRT (Ideal gas law)

n (no of moles) = m(mass)/M (Molecular wt.)

3.1 = (4.37/M) x 0.082 x 318

M = 37.985

Now the only diatomic gas which has closest molecular mass is Fluorine (F2) (37.997). The difference in value is probably coming from approximation.

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According to Avogadro’s law, the number of moles of each gas is same in the two different containers of same size at same temperature and pressure conditions.

According to Avogadro’s law, equal volume of different gases at same temperature and pressure conditions have equal number of molecules. At standard temperature and pressure conditions, Avogadro's law states that 6.022 x [tex]10^2^3[/tex] molecules of gas is present in 22.4L.

1 mole of gas is equal to the number of atoms of the elements that make up the gas. According to Avogadro’s law, 1 mole of gas contains 6.022 x [tex]10^2^3[/tex] molecules. Therefore, the number of moles of the different gases at same temperature and pressure conditions is same.

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ΔSsys  and ΔSsurr both have values larger than 0.

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Answer:

Daffodil leaves always turn yellow a few weeks after the plant blooms. This is normal and indicates that their job is finished for the season. The leaves have absorbed sunlight, which creates energy for the production of sugar that replenishes the bulb for the coming growing season.

Explanation:

Oxalate concentrations ranged widely from 53.4 to 108.8 mg/g on a dry weight basis and 647.2 to 1286.9 mg/100 g on a fresh weight basis, exhibiting a variation that was close to normal.

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The molar concentration of ethanol in this solution is 16.58 M.

percentage by weight of ethanol = 95%

M(CH₃CH₂OH) = 46.07 g/mol; molar mass od ethanol

d = 0.804 g/ml; density of the solution

Take 100 ml (0.1 l) of solution:

m(CH₃CH₂OH) = 100 ml × 0.804 g/ml × 0.95

m(CH₃CH₂OH) = 76.38 g; mass of pure ethanol

n(CH₃CH₂OH) = 76.38 ÷ 46.07 g/mol

n(CH₃CH₂OH) = 1.658 mol; amount of pure ethanol

c(CH₃CH₂OH) = 1.658 mol ÷ 0.1 l

c(CH₃CH₂OH) = 16.58 mol/l; the molar concentration of the solution

Molarity is defined as the number of moles of the solute per liter of the solution. It is denoted by M.

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The object is not pure gold because it does not the same density as pure gold.

The density of an object is defined as the ratio of the mass to the volume of an object. We know that the density could be used to characterize an object. This is why we refer to the density of the object as an intrinsic property of the object. Since the density of the object does not change. We could use the density to determine if the second object is gold or not.

Mass of the object = 33.4.g

Inital volume of the water= 12.3mL

Final volume of the water = 21.7mL

Volume of the object = 21.7mL - 12.3mL = 9.4 mL

Density of the object = 33.4.g / 9.4 mL = 3.55 g/mL

The object is not pure gold because it does not the same density as pure gold.

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The molecules in a 5.15 g sample of dimethylmercury is 1.32 x 10²².

Dimethylmercury is a highly volatile, toxic liquid, which is reactive and colourless. Its molecular formula is C₂H₆Hg. It is used in NMR instruments for calibration. It has risks involved, so it has few applications and used in a lesser quantity.

Dimethylmercury C₂H₆Hg has a molecular mass of -

Molecular mass = (12x2) x (1x6) x 200.59 = 230.6 g/mol

Now,

number of moles in 5.15 g of dimethylmercury =  5.15   = 0.022 mol

                                                                                 230.6

1 mole of dimethylmercury contains 6.022 x 10²³ molecules

So, 0.022 moles of dimethylmercury contains 0.022 x (6.022 x 10²³) = 1.32 x 10²² molecules

Molecules contained in 5.15 g sample of dimethylmercury is

1.32 x 10²²

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Answer:

200J or 196J

Explanation:

mass = 10kg

gravity = 9.8 or 10 ( the answer might vary if u take either 10 or 9.8 as the gravitational value )

height = 2 meter

p.e= mgh

option 1

10×10×2 = 200 Joules

option 2

10×9.8×2 = 196 Joules

better to take 9.8 as gravitational value

hope it helps

Some element have parentheses around atomic mass because it form subgroup of atom within a molecule. the number in parentheses is the mass no of most stable isotopes of that element

Parentheses means in a particular structure are repeated in molecule called parentheses. parentheses is used because to help identity that there  is more than one polyatomic ion present. parentheses are useless in chemical formula if they don't have a subscript.

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True, there should be a balance maintained between consumers, producers and Decomposers. An increase or decrease in either of them would lead to an imbalance in the ecosystem.

Answer:false

Explanation:

Answer:  3

Explanation:   your protons are your atomic number and the atomic mass is the proton and neutrons totaled

The answer would be

A. The sample was green, the color of chloroplast

Hope this helps

Answer:

\ \

=o + H+ ----> =o

/- /

conjugate acid is the product that is differ from the base by one proton