The two chemicals that were in the 1st unknown solution where...
Sodium Chloride
Potassium Chloride
Barium Chloride
Strontium Chloride
Copper Chloride
Lithium Chloride
Calcium Chloride

For an electron as a particle, E = \(1/2mv^2\)

For an electron as a particle, the energy E can be described using the equation:

E =  \(1/2mv^2\)

where

This equation represents the kinetic energy of the electron, which is the E is the energy

energy associated with its motion.

This equation assumes classical mechanics and does not take into account relativistic effects that become significant at high speeds close to the speed of light.

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Answer:

Adaptation 1 is an adaptation to life cycle, Adaptation 2 is an adaptation to physical characteristics.

Explanation:

Answer:

Adaptation 1: A hornwort is a nonflowering plant that produces a large number of spores instead of seeds

Answer:

Because, Gibbs eats more of balanced diet, and that's why the process should be carried out.

Explanation:

I can say Gibbs is healthy and eats balanced diet so Gibbs energy, enthalpy, and entropy should determine whether a process will be a spontaneous or no spontaneous

Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

metal lose

Explanation:

metal give electron to nonmetal

Answer:

lose

Explanation:

Answer:

An atom contains three basic particles namely protons, neutrons and electrons. The nucleus of the atom contains protons and neutrons where protons are positively charged and neutrons are neutral. The electrons are located at the outermost regions called the electron shell.

Change in temperature when quicklime reacts with water.

When ice cubes are separated from the freezer and conducted to room temperature, they turn into a liquid. This temperature is the boiling point of water. Heat makes water molecules move fast. Cooling air causes water vapor to change to a liquid. Water changes rapidly into a gas when water is heated to a temperature of 100 degrees Celsius or 212 degrees Fahrenheit.

When energy is free in an exothermic reaction, the temperature of the reaction mixture increases. When energy is soal up in an endothermic reaction, the temperature decreases.

So we can conclude that Some chemical reactions are distinguished by changes in temperature.

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A 10 g piece of metal at 50°C absorbs 900 G of energy after which the temperature of the metal is 350°C. 0.35J/g°C is the specific heat of the metal.

The amount of heat needed to raise a substance's temperature by one degree Celsius in one gramme, also known as specific heat. Typically, calories and joules per gramme per degree Celsius are used as the measurement units of specific heat.

For instance, water has a specific heat of 1 calorie per gramme per degree Celsius. The notion of specific heat was developed by the Scottish scientist Joseph Black in the 18th century as a result of his discovery that equal masses of different substances required varying quantities.

q = m×c×ΔT

900= 10×c×( 350-50)

c=0.35J/g°C

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Answer:

Organic and inorganic

Explanation:

Answer:

Removing energy (cooling) atoms and molecules decreases their motion, resulting in a decrease in temperature

Answer:

fossils come from way back they can be left from dinosaurs and other species  

Explanation:

Answer:

Using fossils, you can learn about extinct animals and plants, that's one. Two, you can learn about evolutionary traits and the fact that evolution exists.

Explanation:

Answer:

0.0035M

Explanation:

Given parameters

Volume of HCl  = 100mL  = 0.1L

Volume of LiOH = 46.9mL  = 0.0469L

Molarity of LiOH = 0.75M

Unknown:

Concentration of hydrochloric acid = ?

Solution:

The reaction equation is given as;

         HCl   +  LiOH →   LiCl  + H₂O

Let us find the number of moles of the given specie which is LiOH;

   Number of moles  = molarity x volume;

    Number of moles of LiOH = 0.75 x0.0469  = 0.035moles

From the balanced reaction equation;

        1 mole of LiOH combines with 1 mole of HCl

     0.035mole of LiOH will require 0.035mole of HCl

Concentration of HCl = \(\frac{number of moles of HCl}{volume of HCl}\)  

 Concentration of HCl  = \(\frac{0.035}{0.1}\)   = 0.0035M

There is only one orbital in the s sublevel. It can hold up to two electrons.

According to the electronic configuration and Hund's rule of maximum multiplicity there  is only 1 orbital in s subshell which can contain only 2 electrons.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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Answer:

The correct answer is 0.277 M HCl

Explanation:

NaOH is a strong base and HCl is a strong acid. NaOH reacts with HCl to form a salt (NaCl) and water via a neutralization reaction, as follows:

NaOH + HCl → NaCl + H₂O

At the equivalence point, the moles of NaOH added is equal to the moles of HCl present in the solution to be titrated. Moreover, the moles can be calculated as the product of the concentration of base or acid (Cb or Ca) and the volume (Vb and Va), as follows:

moles NaOH = moles HCl

Cb x Vb         =  Ca x Va

Thus, we calculate the concentration of HCl (Ca), as follows:

Ca = (Cb x Vb)/Va = (0.146 M x 47.5 mL)/(25.0 mL)= 0.277 M

The lowest shell that can hold p-orbitals is the n = 2 shell. The second row of the periodic table is represented by the number n = 2.

The 1s sublevel, which has a single orbital, is always the lowest energy sublevel. When the hydrogen atom is in its ground state, its lone electron will be in the 1s orbital. The lowest conceivable energy that a quantum theory system can have is called zero-point energy (ZPE).

There can be a maximum of seven f orbitals. The orbitals at the s sublevel of a major energy level, also referred to as an electron shell, are known as f orbitals. F sublevels have a high energy, which enables them to hold a maximum of 14 electrons in up to seven orbitals.

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Answer:

Elements and compounds

Explanation:

Elements and compounds, mixtures are not chemically bonded and can be physically seperated

Answer:

Isomers have the same molecular formula but different arrangement of its atoms. Thin layer chromatography helps in the separation of substances on a thin layer of glass with the help of the differences in the interaction between the substance and its stationary phase.

The use of micro electromechanicals can be used which would do more separation at a given time when compared to the normal process.

Answer:

While there are many ways to structure plant classification, one way is to group them into vascular and non-vascular plants, seed bearing and spore bearing, and angiosperms and gymnosperms.

Explanation:

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:

D

Explanation:

The ratio of C6H12O6 (which will be referred to as "the carb") to oxygen is 1 to 6, so if we find an answer which has the same ratio, it should be chosen. A is 1:3
B is even worse with a ratio of the carb to oxygen of 1:2
C is the same as B, 1:2
D has a ratio of the carb to oxygen of 1:6, which is what we are looking for.

Answer:

0.551 moles

Explanation:

To calculate the number of moles in 22 grams of argon, divide the mass by the molar mass:

Number of moles = Mass / Molar mass

Number of moles = 22 g / 39.95 g/mol

Number of moles ≈ 0.551 moles

Therefore, there are approximately 0.551 moles of argon in 22 grams of argon.

Answer:

See explanation

Explanation:

PO4{3-} is phosphate
Sulfite's formula is SO3{2-}
Sulfate is SO4{2-}
OH- is hydroxide
Note: {x±} signifies the charge of the entire molecule

The polyatomic ions in question are phosphite ion, sulfite ion, and sulfate ion.

The formula PO3−4 represents the polyatomic ion called phosphite ion. It is composed of one phosphorus atom bonded to three oxygen atoms. The name of the sulfite ion is SO3−2, and it consists of one sulfur atom bonded to three oxygen atoms. Lastly, the sulfate ion has the formula SO4−2, and it is composed of one sulfur atom bonded to four oxygen atoms.

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Answer:

Carbon dioxide

Explanation:

Answer:1.4652

Explanation:

0.74g/ml

0.74x1.98

=1.4652

Answer:

They go extinct

Explanation: When something is on earth and it gets used so much and then it's not in earth anymore that means it was used to much it went extinct (Take dinosaurs for example besides there death)

The elements no longer found on earth are extincted.When something is on earth and it gets used so much and then it's not in earth anymore that means it was used to much it went extinct.

An element is a atom's species that consist of proton in a proper number embeded in their nuclei, as well as pure substance a species consist of pure substance.

Carbon is an element which is a chemical by nature and it is represented by C and the atomic number of carbon is 6.The atomic structure of carbon is designed in such way that it contain 6 electron, 6 protons, and 6 neutrons.

The atomic mass of carbon is 12.011 u and the carbon contain 2, 4 electrons per shell with the electronegativity of 2.55 .The main function of carbon compounds to maintain earth's atmosphere and temperature and to supply energy that works as fuel for our economy.

The atomic structure of carbon is designed in such way that it contain 6 electron, 6 protons, and 6 neutrons.The atomic mass of carbon is 12.011 u and the carbon contain 2, 4 electrons per shell with the electronegativity of 2.55 .

Therefore,The elements no longer found on earth are extincted.When something is on earth and it gets used so much and then it's not in earth anymore that means it was used to much it went extinct.

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Answer:

B. Chemically reactive

Explanation:

A Chemically reactive element is an element that is likely to combine with another element to form new substances

The reactivity of the element depends on the number of electrons in the outermost energy level and even the distance of the outermost energy level from the nucleus.  From the periodic table, Fluorine is the most reactive non-metal while francium is the most chemically reactive metal

Answer:

frequency=?

Explanation:

wavelength=4.6x10^6m

speed=3x10^8ms-1

frequency=[3x10^8]/[4.6x10^6]

frequency=65.2s-1

Answer:

Form  covalent bond

Explanation:

If their electronegativity is same or very close they will likely form covalent bond (where they share electrons)

Answer:

Both the system and the surroundings are losing 260 J. The system is gaining 260 J, while the surroundings are losing 260 J. Both the system and the surroundings are gaining 260 J. The system is losing 260 J, while the surroundings are gaining 260 J. None of the above is true.

Sodium is a metal that belongs to group 1 of the periodic table.

My favorite element is sodium. Sodium is found in group one of the periodic table. The element is univalent and also forms univalent positive ions. Like every other metal, sodium is able to react with dilute acids to liberate hydrogen gas.

Sodium is a light metal and is known to react with mercury to form the sodium mercury amalgam which is obtained during the electrolysis of sodium chloride. All of the compounds that are formed by sodium are ionic in nature. However the hydrides of sodium are unstable.

Sodium is highly reactive thus it must not be exposed to air since it could ignite spontaneously in air. As such, sodium must be stored under paraffin oil. All the compounds of sodium are ionic in nature.

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