my song, you hate me

yeah, lately i was feeling that you hate me its ok though cause i know

yeah, am i in a dream am i awake i cant tell because i feel im about to break
i know im a mistake all i ever ask for is for gods sake i dont apologize because what difference what it make i had all those chances that i did not take

its all my fault i got to behave im trapped in a cage i got to lose all the bad stuff and get in shape all i have to do now is give and take all those things that i said about drowning
in a lake its just hard to replace when you have so much to say to her face i still remember that when she taught me how to tie my shoe lace

yeah, i just want to be the better person the better version im not even learning and that is for certain im in flames im burning and inside im hurting but now i hope i will learn my lesson

Fusion powers the sun. This creates nuclear energy, which then goes to earth in the form of radiation. The plants get sunlight and photosynthesise (the process of getting glucose by sunlight). The answer should be C.

Answer:

A is the correct answer

Answer:

A. The electrons farthest from the nucleus of the atom

Explanation:

The four types of crystals are ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

Crystal, any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry.

An ionic crystal is a crystalline ionic compound. They are solids consisting of ions bound together by their electrostatic attraction into a regular lattice.

A crystalline solid in which the atoms are held together by metallic bonds. Metallic crystals are found in some interstitial compounds as well as in metals and alloys.

Covalent Crystals also called atomic crystals are the molecular solids in which the same or different atoms are joined together by covalent bonding.

Molecular crystals are substances that have relatively weak intermolecular binding, such as dry ice.

Thus, there are four types of crystals such as ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

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Answer: Gold Wire

Explanation:

Out of all of these options only gold wire is an element, elements are pure and cannot be broken down by any chemical means

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Answer:

Electrical

There are five types of kinetic energy: radiant, thermal, sound, electrical and mechanical.

Answer:

1. Isotopes are atoms of an element that consist of the same number of protons but a different number of neutrons.

2. No. of protons = 13

 No. of neutrons = 27 - 13

                            = 14

3. refer to attached file

4(a). Since the noble gases can be found in group 18 of the periodic table, it suggests that they have a complete octet (a full valence shell of electrons), and this allows them to be stable gases that show the least reactivity.

4(b). Since the number of protons and electrons are equal in an atom, the opposite charges are balanced and thus, there is no net charge on the atom (neutrons present in the atom have no charge). Hence, an atom is electrically neutral.

5. Mass no. of X = 6 + 6

                           = 12

   Mass no. of Y = 6 + 8

                           = 14

6. mass number = no. of protons in the nucleus of an atom + no. of neutrons in the nucleus of an atom

atomic number = no. of protons in the nucleus of an atom

isobars = atoms of elements which have the same mass number but different atomic numbers

isotopes = atoms of elements which have the same number of protons but a different number of neutrons

Answer:

Molecular Mass

Explanation:

It's asking for the numerical quantity. That quantity would be the Molecular Mass. Take the sample mass and divide it by the molecular mass to get the number of moles.

(14g N * 2) + (1g H *4) = 32g / mol of N2H4

To get # of moles, divide the sample mass by the molecular mass

25g / 32g = 0.78125 moles

pCO2 is an important factor that affects various aspects of water chemistry and the impacts of ocean acidification. When pCO2 increases, the concentration of total CO2 dissolved in water also increases. This leads to changes in pH, which decreases due to increasing atmospheric CO2 concentration.

When pCO2 rises, the concentration of only CO2 dissolved in water increases. The dissolved CO2 forms carbonic acid, which contributes to the acidification of the ocean. This increase in CO2 affects the equilibrium between CO2, HCO3-, and CO3^2-, shifting it towards higher levels of dissolved CO2 and H+ ions, resulting in a lower pH.

In terms of the impacts of ocean acidification on different organisms, the effects can vary depending on their specific needs. An organism that requires CO2 is likely to fare better under ocean acidification since the increase in dissolved CO2 can provide them with a favorable environment. However, organisms that rely on HCO3- or CO3^2- may fare worse under ocean acidification, as the lower pH interferes with the availability of these carbonate ions, which are essential for shell formation and calcification in some marine organisms.

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Lewis dot structure is given in photo .

What is  lewis dot structure ?

A Lewis point structure is  a type of diagram used to show the distribution of electrons within a molecule or ion. This structure was first introduced in 1916 by chemist Gilbert N. Lewis. The structure consists of dots representing electrons surrounding the chemical symbols of the atoms in the molecule, indicating the number of bonds each atom can form. The dots are placed in pairs around the element symbol and represent the valence electrons (the electrons at the outermost energy level) of that element. The number of valence electrons of an element can be obtained from the periodic table.

Lewis point structures are used to predict the number and type of bonds that form between atoms in a molecule and to predict the shape of the molecule. By connecting the points of different elements in a molecule, the lewis structure can be used to determine the bond order, or the number of bonds between two atoms. Information about bond order, combined with the arrangement of atoms in space, can be used to determine the molecular structure of a molecule.

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The precipitate which is formed by chemical reaction between sodium hydroxide and calcium bromide is calcium hydroxide whose chemical formula is Ca(OH)₂.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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The table of elements is called the periodic table because it describes the periodic recurrence of chemical properties. Therefore, the correct option is option B.

The periodic table is a list of chemical elements arranged according to their chemical characteristics, atomic number, and electron configuration. It includes a thorough review of all recognised elements and offers useful details about the traits of each element and its interactions with other elements. Because it arranges the elements according to their atomic number, electron configuration, and chemical properties in such a way that atoms with comparable properties recur at regular intervals, the table of elements is known as the periodic table.

Therefore, the correct option is option B.

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Answer:

There is only one sub level in the first principal energy level, and it is 1s

Explanation:

trust

Answer:

Explanation:

To calculate the amount of energy required to heat 147 grams of iron from 30°C to 51°C, we need to use the specific heat capacity of iron, which is 0.45 J/g·°C.

The formula we use is:

Q = m * c * ΔT

where Q is the amount of heat energy required, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Substituting the given values into the formula, we get:

Q = 147 g * 0.45 J/g·°C * (51°C - 30°C)

Q = 147 g * 0.45 J/g·°C * 21°C

Q = 139.23 J

Therefore, the amount of energy required to heat 147 grams of iron from 30°C to 51°C is 139.23 joules (J).

Answer:

The rate of dissolving of a solute in a solvent is faster when the solute and solvent are stirred, the solvent is warmer, or the solute consists of smaller particles with more surface area.

The statement "molecules move in random directions when heated in a heat engine, and because of the lack of uniformity in the direction of molecular movement" is true.

When a heat engine is heated, molecules absorb heat energy and their kinetic energy increases. The kinetic energy of molecules causes them to move around. However, this movement is not uniform, and the molecules move in random directions.

A heat engine is a device that converts thermal energy into mechanical energy. Heat engines operate on the principle of thermodynamics.

They work by taking in thermal energy from a high-temperature reservoir, converting some of it into mechanical energy, and then releasing the remaining thermal energy to a low-temperature reservoir.The internal combustion engine in a car, the steam engine in an old locomotive, and the turbine in a power plant are all examples of heat engines. They all convert heat energy into mechanical energy to perform work.

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Answer: \(AgNO_3(aq)+NaOH(aq)\rightarrow AgOH(s)+NaNO_3(aq)\)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The equation which represents a precipiation reaction is:

\(AgNO_3(aq)+NaOH(aq)\rightarrow AgOH(s)+NaNO_3(aq)\)

Answer:

Explanation: l m n o p q r s t u v w x y z

Answer:

The answer is D..i.e phosphate. it consists of 1p and 4oxygen atoms

\(PO_4^{3-}\)  is a polyatomic ion. Hence, option D is correct.

What is a polyatomic ion?

Polyatomic ions are ions which consist of more than one atom.

The prefix poly- means many, so a polyatomic ion is an ion that contains more than one atom. This differentiates polyatomic ions from monatomic ions, which contain only one atom.

\(PO_4^{3-}\) is a chemical derivative of phosphoric acid with a chemical name Phosphate. Phosphate is also called Phosphate ion or Orthophosphate.

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Answer:

The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol). The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms.

Answer:

The balanced chemical equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.

The molar mass of CaCO₃ is 100.0869 g/mol 1. Therefore, 8.2 g of CaCO₃ is equivalent to 0.0819 moles of CaCO₃.

Since the reaction requires 2 moles of HCl for every mole of CaCO₃, 0.0819 moles of CaCO₃ will require 0.1638 moles of HCl.

The molar mass of HCl is 36.46094 g/mol 2. Therefore, 0.1638 moles of HCl is equivalent to 5.97 g of HCl.

So, you will need approximately 5.97 g of hydrochloric acid (HCl) to react with 8.2 g of calcium carbonate (CaCO₃).

Explanation:

The current involved is 44.7 A

In an electrolytic reaction, we have the situation in which one specie is oxidized and the other specie is reduced in the electrochemical reaction. We have the reaction that occurs as;

2Cl^-(aq) ------> Cl2(g) + 2e

Now;

If 2 * 96500 C liberates 22.4 dm^3 of Cl2

x C liberates 20dm³ of chlorine gas at STP

x =  2 * 96500 C *  20dm³/24 dm³

x = 160833.33 C

Now

Q = It

Q = quantity of electricity

I = current

t = time = 1 hour or 3600 s

I = Q/t =  160833.33 C/ 3600 s

I = 44.7 A

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a) In ClNO, the hybridization of the central atom N is sp².
b) In CS₂, the hybridization of the central atom S is sp.
c) In Cl₂CO, the hybridization of the central atom C is sp².
d) In Cl₂SO, the hybridization of the central atom S is sp³.
e) In SO₂F₂, the hybridization of the central atom S is sp³.
f) In XeO₂F₂, the hybridization of the central atom Xe is sp³d².
g) In ClOF₂⁺, the hybridization of the central atom C is sp³.

In each of the molecules and ions given, the hybridization of the central atom can be determined by considering the number of electron groups (bonds and lone pairs) surrounding the central atom. The hybridization will correspond to the number of electron groups.
a) For ClNO, nitrogen has one lone pair and three bonds, giving it a total of four electron groups. This corresponds to sp3 hybridization.
b) For CS2, carbon has two double bonds and no lone pairs, giving it a total of four electron groups. This corresponds to sp hybridization.
c) For Cl2CO, carbon has two double bonds and one lone pair, giving it a total of three electron groups. This corresponds to sp2 hybridization.
d) For Cl2SO, sulfur has one lone pair and two double bonds, giving it a total of three electron groups. This corresponds to sp2 hybridization.
e) For SO2F2, sulfur has one lone pair and two double bonds, giving it a total of three electron groups. This corresponds to sp2 hybridization.
f) For XeO2F2, xenon has two lone pairs and four bonds, giving it a total of six electron groups. This corresponds to sp3d2 hybridization.
g) For ClOF2+, chlorine has one lone pair and three bonds, giving it a total of four electron groups. This corresponds to sp3 hybridization.

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Acids identified:

1. HCl: Arrhenius, Brönsted-Lowry, Lewis, 2. \(H_{2}O\): Brönsted-Lowry, 3. \(Fe_{3}\)+: Lewis, 4. \(AlCl_{3}\): Lewis, 5. \(H_{2}SO_{4}\): Arrhenius, Brönsted-Lowry, Lewis, 6. \(BF_{3}\): Lewis

In order to identify Arrhenius, Brönsted-Lowry, and Lewis acids, we need to understand the definitions of each:

Let's now use these definitions to categorise each reaction:

1. HCl + \(H_{2}O\) → \(H_{3}O\)+ + Cl-

Arrhenius acid: HCl

Brönsted-Lowry acid: HCl

Lewis acid: HCl

2.\(NH_{4}\)+ + OH- \(NH_{3}\) + \(H_{2}O\)

Arrhenius acid: NONE

Brönsted-Lowry acid: \(H_{2}O\)

Lewis acid: NONE

3. \(Fe_{3}\)+ + \(6H_{2}O\) → Fe(\(H_{2}O\))63+

Arrhenius acid: NONE

Brönsted-Lowry acid: NONE

Lewis acid:\(Fe_{3}\)+

4. \(AlCl_{3}\) + Cl- → \(AlCl_{4}\)-

Arrhenius acid: NONE

Brönsted-Lowry acid: NONE

Lewis acid: \(AlCl_{3}\)

5. \(H_{3}O\)+ + \(HSO_{4}\)- = \(H_{2}SO_{4}\) + \(H_{2}O\)

Arrhenius acid: \(H_{2}SO_{4}\)

Brönsted-Lowry acid: \(H_{2}SO_{4}\)

Lewis acid: \(H_{2}SO_{4}\)

6. \(BF_{3}\) + \(NH_{3}\)→ \(F_{3}B\)-\(NH_{3}\)

Arrhenius acid: NONE

Brönsted-Lowry acid: NONE

Lewis acid: \(BF_{3}\)

In summary:

1. HCl: Arrhenius, Brönsted-Lowry, Lewis acid

2.\(H_{2}O\): Brönsted-Lowry acid

3. \(Fe_{3}\)+: Lewis acid

4. \(AlCl_{3}\): Lewis acid

5. \(H_{2}SO_{4}\): Arrhenius, Brönsted-Lowry, Lewis acid

6. \(BF_{3}\): Lewis acid

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The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.

Given:

Power rating of the refrigerator = 500 W

Running time per day = 12 hours

Number of days = 30

First, we need to convert the power rating from watts to kilowatts:

Power rating = 500 W / 1000 = 0.5 kW

Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:

Energy used = Power rating × Running time × Number of days

Energy used = 0.5 kW × 12 hours/day × 30 days

Energy used = 180 kWh

Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

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Answer:

here are several resons that fossil foraminifera are especially valuable for determining the relative ages of marine rock layers. They have been around since the Cambrian, over 500 million years ago. They show fairly continuous evolutionary development, so different species are found at different times.

Answer:

An observation

Explanation:  observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity

Answer:

1. 4.75

2. 5.50

Explanation:

Answer:

convection current

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The number of valence electrons determines if an extrinsic material produced is p-type or n-type.

In semiconductors, valence electrons are responsible for the electrical conductivity of the material. Valence electrons are the outermost electrons of an atom that participate in chemical reactions and bond formation.

The type of extrinsic material produced depends on the type of dopant used and the number of valence electrons in the dopant.

The dopant is added to the intrinsic semiconductor in small quantities to increase its conductivity.The dopant atom replaces a semiconductor atom in the crystal lattice, causing the number of valence electrons to change.

If the dopant has fewer valence electrons than the semiconductor atom it replaces, it is called a p-type dopant because it leaves a hole (a positive charge carrier) behind when it bonds with other atoms in the lattice.

When the dopant has more valence electrons than the semiconductor atom it replaces, it is called an n-type dopant because it introduces an extra electron (a negative charge carrier) into the lattice.

Hence, the number of valence electrons determines if an extrinsic material produced is p-type or n-type.

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