if the original source of organic material is _______ then mostly natural gas will be formed, as opposed to mostly forming oil.

Answer:

temperature

Explanation:

The specific heat capacity of a substance is the amount of energy required to change the temperature of one kilogram of the substance by one degree Celsius.

Ethanol 20% (v/v) is a homogenous mixture kind of material. Because they are soluble in one another, ethyl alcohol and water combine to create a homogenous combination. Later, they combine to produce a homogeneous solution.

Alcohol's chemical name is ethanol, with the molecular formula C2H5OH. It has a molar mass of 46.06844 g/mol and is produced through fermentation. Alcohol is a liquid chemical molecule called ethanol (C2H5OH), which is flammable and volatile.

Alcohols are a class of chemical compounds that include substances like ethanol, CH3CH2OH, which has a hydroxyl group, or -OH, attached to a carbon atom. A chemical molecule called ethanol is combustible and colorless. It is present in alcoholic beverages.

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The 10 g of the calcium oxide reacts with the 10 g of the water and formed the calcium hydroxide. The  mass of calcium hydroxide is 13 g.

Given that :

The mass of calcium oxide = 10 g

The mass of water is 10 g

The reaction is given as :

CaO + H₂O --->   Ca(OH)₂

1 mole of CaO react with 1 mole of H₂O to form 1 mole of Ca(OH)₂

The moles = mass / molar mass

Moles of CaO = 10 g / 56 g/mol

                         =0.179 moles

Moles of H₂O = 10 g / 18 g/mol

                       = 0.556  moles

CaO is the limiting reagent .

The moles of Ca(OH)₂ = 0.17 mol

Mass =  moles × molar mass

          = 0.17 moles ×  74 g/mol

           = 13  grams

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The mass of water is 231.71kg

The specific heat capacity of a substance is the quantity of heat required to increase the temperature of a unit mass of substance by 1°C or 1k. It is measured in J/kg/K. It is denoted by c.

The quantity of heat required is expressed as H= mc∆k. where m is the mass and k is temperature.

From the law of calorimetry, heat lost = heat gained. The specific heat capacity of water and copper are 400J/kg/k and 4200J/kg/k

heat lost by copper = 110×400× ( 82.48-24.98)

= 44000× 57.5 = 2530000J

heat gained by water = m× 4200 × (24.98-22.38)

= 4200× 2.6×M = 10920m

therefore 2530000= 10920m

where m is the mass of water

m= 2530000/10920

m= 231.71kg

therefore the mass of the water is 231.71kg

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Answer:

7,540,000 mg

Explanation:

1 kg = 1,000,000 mg

7.54 kg x 1,000,000= 7,540,000 mg

The number of moles of carbon monoxide (CO) produced when 0.65 mol of oxygen reacts with excess carbon is 0.7 moles.

To determine the number of moles of carbon monoxide (CO) produced when 0.65 mol of oxygen reacts with excess carbon, we need to use the stoichiometry of the balanced chemical equation.

From the balanced equation:

C + \(O_{2}\) → CO

We can see that one mole of carbon reacts with one mole of oxygen to produce one mole of carbon monoxide.

To find the number of moles of carbon monoxide produced, we can directly equate it to the number of moles of oxygen in this case, since the reaction occurs with excess carbon. Therefore, 0.65 mol of oxygen will produce 0.65 mol of carbon monoxide.

Since there is a 1:1 molar ratio between oxygen and carbon monoxide according to the balanced equation, the number of moles of carbon monoxide produced is equal to the number of moles of oxygen used in the reaction. Hence, 0.65 moles of carbon monoxide are produced when 0.65 moles of oxygen react with excess carbon.

Stoichiometry calculations involve the use of balanced chemical equations to determine the molar ratios between reactants and products. In this case, the stoichiometry allows us to establish a direct relationship between the number of moles of oxygen and the number of moles of carbon monoxide produced. Rounding the answer to the nearest tenth gives us 0.7 moles of carbon monoxide as the result.

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Answer:

When coyotes are absent or even greatly reduced in a natural area, the relationships between species below them in the web are altered, putting many small species at risk.

The mixture of sodium chloride and broken glasses can be separated by dissolution, filtration, and evaporation respectively.

The mixture containing sodium chloride and broken glasses can be separated as follos:

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Answer: Ovalbumin (Albumin)

Explanation:

The albumen (egg white) is composed of almost 60% of the protein ovalbumin. It's the main source of proteins for tissue synthesis in the embryo. It acts as a storage protein, storing ions and amino acids necessary for embryonic development.

There are four different proteins present in egg white. In which the most abundant protein is ovalbumin present in 54 %.  

Proteins are biomolecules very essential for life. Proteins are made of a number of amino acids.  Amino acids join together to form peptides and large number of peptides constitute a protein.

Essential amino acids have to be up taken from diet and non-essential will be produced inside the body.

Proteins are the major substances to build up our body. There are essential and non essential amino acids. Nails and hair are made of keratin protein. Milk contains the protein called lactine.

Similarly the protein in curd is casein. The proteins in egg white are ovalbumin, ovotransferrin, ovomucin and ovomucoid. In which ovalbumin is most abundant.

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The temperature of a given volume of water changes as heat is added at a consistent pace, as shown by the water heating curve. The temperature of the water does not vary throughout a phase shift, creating a plateau on the graph.

When a substance is heated to a material-specific phase-change temperature, the phase transition from solid to liquid occurs immediately.

Water has a specific heat capacity of 4.18 J/g/°C. The amount of heat, or Q, is what we want to know. To do this, we would apply the formula Q = m•C•T. Knowing the m and C allows for the calculation of the T.

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Answer:

The number of people in that specific area.

Explanation:

Answer:

70°C,130.9 ................,...

Answer:

Explanation:

The correct answer is B. isotopes.

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons. This difference in the number of neutrons leads to variations in their atomic mass but does not affect their chemical properties or reactivity. Isotopes of an element have similar chemical behaviors but may have slightly different physical properties due to the difference in atomic mass.

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Answer:

1.20 mole

Explanation:

1 Mole of Cu reacts to form  =  1 Mole of Hg

(1.20 mol × 1 mol) ÷ 1 mol

1.20 mol of Hg

The energy change ΔE when ¹⁶O₈ ( 15.99491461956 amu) is formed from 8 protons and 8 neutrons is less than zero is true.

Explanation: During the fusion reaction that combines 8 protons and 8 neutrons to create 16O8, the energy change, ΔE, is negative. When the mass of the products is less than that of the reactants, the reaction is exothermic and releases energy. The mass of the reactants, eight protons and eight neutrons, is 15.99 amu.

The mass of the products, oxygen-16, is 15.99 amu, which is less than that of the reactants. This means that energy is released, resulting in a negative energy change. The reaction is exothermic as a result of this. The energy change ΔEwhen 16O8 is formed from 8 protons and 8 neutrons is less than zero, and this is a true statement.

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Explanation:

The claim that hydrogen chloride (HCl) would be much stronger than nitric acid (HNO3) due to opposing dipole forces is incorrect.

Both HCl and HNO3 are strong acids, meaning that they dissociate completely in water to produce H+ ions. The strength of an acid is determined by the degree to which it dissociates in water. In other words, the stronger the acid, the more H+ ions it produces in water.

The dissociation of HCl and HNO3 in water can be represented as follows:

HCl + H2O → H+ + Cl-

HNO3 + H2O → H+ + NO3-

As we can see, both HCl and HNO3 produce H+ ions in water. Therefore, the strength of an acid cannot be solely determined by its dipole forces.

In addition, it's important to note that HCl is a much more volatile and corrosive acid than HNO3. It can cause severe respiratory and skin irritation when it is inhaled or comes into contact with skin. Therefore, switching HNO3 for HCl could be dangerous and should not be done without proper precautions and expert knowledge

The question is incomplete, the complete question is:

Standardization of a Borax solution (Na2B4O7). A student titrates a 20.00 mL sample of an aqueous borax solution with 1.044 M H2SO4. It takes 2.63 mL of acid to reach the equivalence point. Knowing it takes 1 H2SO4 to neutralize 2 Na2B4O7, what was the concentration of this Borax solution?

Answer: The concentration of borax solution is 0.069 M.

Explanation:

To calculate the concentration of borax solution, the formula used is:

\(n_1C_1V_1=n_2C_2V_2\) ....(1)

where,

\(n_1, C_1\text{ and }V_1\) are the n-factor, concentration and volume of sulfuric acid

\(n_2,C_2\text{ and }V_2\) are the n-factor, concentration and volume of borax solution.

We are given:

\(n_1=1\\C_1=1.044M\\V_1=2.63mL\\n_2=2\\C_2=?M\\V_2=20mL\)

Putting values in equation 1, we get:

\(1\times 1.044\times 2.63=2\times C_2\times 20\\\\C_2=\frac{1\times 1.044\times 2.63}{2\times 20}\\\\C_2=0.069M\)

Hence, the concentration of borax solution is 0.069 M.

The negatively charged electron in the plum pudding model, however, is smaller than an atom and is negatively charged.

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Answer:

1. B

2.C

3.D

4.Sorry don't this one :(

5.A

Explanation:

please give me at least 20 points ❤

Answer: (B) −198 kJ.

Answer:

2260 J

Explanation:

For water at its boiling point of 100 ºC, the heat of vaporization is 2260 J g-1. This means that to convert 1 g of water at 100 ºC to 1 g of steam at 100 ºC, 2260 J of heat must be absorbed by the water.

The total number of atoms contained within the unit cell are calculated to be 4 atoms. Option B is correct.

Atoms can be found in an FCC (face centred cubic cell) unit cell at the cube's centre and on each of the crystal lattice's four edges. Only half of each atom, which is shared by the face-centred atom and two adjacent unit cells, pertains to a single cell.

Atoms can be found in every region of the crystal lattice in FCC. Each aspect of the cell contains an atom in the centre. Two neighbouring unit cells share this face-centred atom. Each particle has a maximum of 12 members per unit cell.

Number of atoms in Body centred cubic lattice are,

⇒ 8 corners × 1/8 per unit corner = 1 atom

⇒ 6 face-centred atoms × 1/2 atom per unit cell = 3 atoms

Thus, total number of atoms in a unit cell are calculated to be (1 + 3 = 4 atoms). Option B is correct.

The given question is inappropriate. Assuming the unit cell to be Face centred cubic unit cell (FCC), the total number of atoms contained within the unit cell is calculated.

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To control ice build-up on a heat pump outdoor coil in the heating cycle, a defrost control is attached to a large diaphragm.

The defrost control detects when ice has accumulated on the coil and activates a defrost cycle. This cycle reverses the flow of refrigerant, causing the outdoor coil to become hot, melting the ice.

The defrost control ensures that the heat pump operates efficiently by preventing excessive ice build-up, which can hinder its performance.

By attaching the defrost control to a large diaphragm, it allows for accurate detection of ice accumulation and prompt activation of the defrost cycle.

This helps to maintain optimal heat transfer and overall heat pump performance during the heating cycle.

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The correct answer is the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

The given solution is a hypotonic solution as the solution's tonicity is lower than that of the tears. The tears contain 0.9% w/v of NaCl, which is isotonic with tears. So, to make the given solution isotonic, the amount of sodium chloride needs to be added.

The concentration of NaCl in tears is 0.9% w/v. Additional Information: We know that % w/v is the amount of solute present in grams per 100 ml of the solution. Therefore, 0.9% w/v means 0.9 grams of NaCl is present in 100 mL of tears.

To make 30 ml of isotonic solution, we can use the following formula: Equivalent weight of NaCl = 58.5/2 = 29.25 (as NaCl ionizes to give Na+ and Cl- ions)Moles of NaCl required to make 30 ml isotonic solution = 0.9 × 30 / 1000 = 0.027Moles of Na+ and Cl- ions present in 30 mL of isotonic solution = 2 × 0.027 = 0.054

A number of grams of NaCl needed to prepare 30 mL of isotonic solution is calculated as follows:0.054 g = (0.027 x 29.25 x X) / 1000Where X is the amount of NaCl required to make 30 mL isotonic solution. Solving this equation gives us: X = 1.85 g (approx). Therefore, the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.

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Answer:

i going to be aniston i would say take a gess

The acidity or alkalinity of a solution depends upon its hydronium ion concentration and hydroxide ion concentration. The concentration of OH⁻ is 1 × 10⁻⁴ M.

The pOH expresses the hydroxide ion concentration of a solution. The pOH of a solution is defined as the negative logarithm to the base 10 of the value of the hydroxide ion concentration in moles per litre.

The equation used to calculate the concentration of OH⁻ is:

pOH = -log [OH⁻]

[OH⁻] = 10⁻pOH

[OH⁻] = 10⁻⁴

= 0.0001 M

The number of significant figures in a reported value is the number of digits that are known with certainty plus the last one having some uncertainty.

Here 0.0001 contains 3 significant figures. In scientific notation it can be represented as 1 × 10⁻⁴ M.

Thus the concentration of [OH⁻] is 1 × 10⁻⁴ M.

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When Ca+2 is combined with PO4-3, the correct formula is Ca3(PO4)2 to achieve electrical neutrality.

Calcium (Ca) is a metal with a charge of +2, indicated by the +2 superscript. Phosphate (PO4) is a polyatomic ion with a charge of -3, indicated by the -3 superscript. In order to form a neutral compound, the charges of the ions must balance each other.

To achieve electrical neutrality, three Ca+2 ions are needed to balance the charge of two PO4-3 ions. Each Ca+2 ion has a charge of +2, so three Ca+2 ions contribute a total charge of +6. Similarly, each PO4-3 ion has a charge of -3, so two PO4-3 ions contribute a total charge of -6. Therefore, the compound Ca3(PO4)2 ensures that the charges are balanced, resulting in a neutral compound.

In the formula, the subscripts indicate the number of atoms present in the compound. There are three calcium ions (Ca) and two phosphate ions (PO4) present in the compound. The formula Ca3(PO4)2 represents the combination of calcium and phosphate ions in the correct ratio to maintain electrical neutrality.

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Answer: The frequency is 7.047 Hz. It comes under ultraviolet radiation

Explanation:

We know that v = λ x f ................. (1)

where v ⇒ velocity of the wave

f ⇒ frequency of the wave

λ ⇒ wavelength of the wave

Since we know that the given wave is electromagnetic radiation,

v = 3 x 10⁸ m/s

λ = 4.257 x 10^-9 m (Given)

Substituting in (1), we get

f = v / λ

f = 3 x 10^8 / 4.257 x 10^-9

f = 7.047 x 10^16 Hz

Since the frequency is in the order of 16, the given radiation is ultraviolet radiation

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In 0.75 moles of caffeine, there are a total of 6 carbon atoms, 7.5 hydrogen atoms, 3 nitrogen atoms, and 1.5 oxygen atoms.

To determine the total number of atoms in 0.75 moles of caffeine, we need to consider the molecular formula of caffeine, which is C8H10N4O2. The molecular formula provides the ratios of each element present in the compound. By multiplying the number of atoms in each element by the corresponding coefficient in the molecular formula, we can calculate the total number of atoms. In this case, there are 8 carbon (C) atoms, 10 hydrogen (H) atoms, 4 nitrogen (N) atoms, and 2 oxygen (O) atoms in each molecule of caffeine. Multiplying these values by 0.75 moles will give us the total number of atoms in 0.75 moles of caffeine.

The molecular formula of caffeine, C8H10N4O2, provides the number of atoms for each element present in one molecule of caffeine. In this case, there are 8 carbon (C) atoms, 10 hydrogen (H) atoms, 4 nitrogen (N) atoms, and 2 oxygen (O) atoms.

To calculate the total number of atoms in 0.75 moles of caffeine, we need to multiply the number of atoms for each element by the coefficient in the molecular formula, and then multiply that by the number of moles (0.75 moles).

For carbon (C): 8 atoms x 0.75 moles = 6 atoms (since there are 8 carbon atoms in one molecule of caffeine).

For hydrogen (H): 10 atoms x 0.75 moles = 7.5 atoms (since there are 10 hydrogen atoms in one molecule of caffeine).

For nitrogen (N): 4 atoms x 0.75 moles = 3 atoms (since there are 4 nitrogen atoms in one molecule of caffeine).

For oxygen (O): 2 atoms x 0.75 moles = 1.5 atoms (since there are 2 oxygen atoms in one molecule of caffeine).

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A water molecule can bond to up to 3 other water molecules by hydrogen bonding.

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