Which best describes the sequence of elements in Period 5 of the periodic table? (Read the table from left to right and choose the best description)





Nonreactive gases, Metalloids, Nonreactive metals, Highly reactive metals, Highly reactive gases


Highly reactive gases, Relatively nonreactive metals, Metalloids, Very nonreactive gases, Nonreactive nonmetals


Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases


Nonreactive gases, Nonreactive metals, Highly reactive metals, Metalloids, Reactive nonmetals, Reactive gases

Explanation:

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Answer:

Mg3N2

Explanation:

it has an inorganic compound for Magnesium and Nitrogen. if you put this two together it will the compound Magnesium nitride.

Answer:

B i tyink

Explanation:

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To obtain sand and water from mixture 1 , filtration process will be used.

To obtain salt from water in mixture 2 , crystallisation will be done.

Physical wastewater treatment processes include use of racks, screens,  clarifiers (sedimentation and flotation), and filtration. Chemical or biological reactions are important treatment processes, but not part of a physical treatment process.

It is given that the mixture contains

Mixture 1 contains sand and water

Mixture 2 contains salt and water

To obtain sand and water from mixture 1 , filtration process will be used.

To obtain salt from water in mixture 2 , crystallisation will be done.

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Answer:

C, regulate temperature

Explanation:

Bones take no part in temperature regulation throughout the body.

Answer:

Carbon is a versatile element and is found in many different chemical compounds, including those found in space. Carbon is versatile because it can form single, double, and triple bonds. It can also form chains, branched chains, and rings when connected to other carbon atoms.

Explanation:

meaning of versatile: capable of or adapted for many different uses, skills, etc. 2 variable or changeable.

The versatile nature of carbon can be best understood with its features such as, tetravalency and catenation. In this section let us learn more about versatility of carbon.

Carbon is a versatile element and is found in many different chemical compounds, including those found in space. Carbon is versatile because it can form single, double, and triple bonds. It can also form chains, branched chains, and rings when connected to other carbon atoms.

The two characteristic features seen in carbon, that is, tetravalency and catenation, put together give rise to a large number of compounds. Many have the same non-carbon atom or group of atoms attached to different carbon chains.

Catenation: The property of forming long chains by self-linking with other carbon atoms to form long chains, rings, double or triple bonds is called catenation.

Isomerism: Compounds with same molecular formula but different structural formula are called isomers. An isomerism commonly seen is due to difference in the arrangement of atoms or groups of atoms & is called structural isomerism. The 4 types of structural isomerism are:

 Chain isomerism

 Position

 Functional

Metamerism

Tetravalency: Carbon has 4 electrons in its valence shell. Energy considerations do not allow it to gain or lose 4 electrons; therefore it forms covalent bonds with other elements to complete its octet. This accounts for its tetravalency and explains its ability to form a variety of compounds.

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Answer:

Answer:

yes it will react in water as the chem

Answer:

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. What is the specific heat capacity of iron?

Explanation:

The amount of heat absorbed by the gold is 339.1 joules, which was calculated by the formula of specific heat capacity.

Specific heat capacity, often just called “specific heat”, is the amount of heat energy required to raise the temperature of one unit of mass of a substance by one degree Celsius (or one Kelvin).

To calculate the amount of heat absorbed by the gold, we can use the formula:

Q = m × c × ΔT

where:

Q = heat absorbed (in joules)

m = mass of the gold (in grams)

c = specific heat capacity of gold (in joules per gram per degree Celsius)

ΔT = change in temperature of the gold (in degrees Celsius)

The specific heat capacity of gold is 0.129 J/g°C.

Substituting the given values into the formula, we get:

Q = 15.5 g × 0.129 J/g°C × (177.4°C - 4.5°C)

Q = 15.5 g × 0.129 J/g°C × 172.9°C

Q = 339.1 J

Therefore, the amount of heat absorbed by the gold is 339.1 joules.

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Meteorite: One the surface of Earth

Meteoroid: In outer space

Meteor: Entering Earths atmosphere

Explanation:

Answer:

I know Sodium Nitrate,Methane,Carbon Dioxide,Atmospheric Oxygen and Hydrochloric Acid

Explanation:

Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass. Compounds are produced through different whole-number combinations of atoms.

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Answer:

moles PbI₂ produced = = 0.9 mole (1 sig. fig.)

Explanation:

Given                   Pb(NO₃)₂  +    2KI     −−>    PbI₂ + 2KNO₃

                                                  300g         ?moles

moles KI = 300g KI/166g/mol = 1.81 mole KI

Rxn ratio for KI and PbI₂ => 2:1

∴ moles PbI₂ produced = 1/2(1.81 mole) = 0.9036144 mole (calculator answer)

= 0.9 mole (1 sig. fig.)

Answer: 15N

Explanation:

The formula to calculate force in this scenario will be:

Force = Mass × Acceleration

where,

Mass = 6kg

Acceleration = 2.5m/s

We then put the values of mass and the acceleration in the formula. This will be:

F = ma

F = 6 × 2.5

F = 15N

Therefore, the force required to move the bowling ball will be 15Newton.

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Answer: Boiling the water

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Answer:

im pretty sure its a push or pull thing

Explanation:

Tensional stress is the stress that tends to pull something apart. It is the stress component perpendicular to a given surface, such as a fault plane, that results from forces applied perpendicular to the surface or from remote forces transmitted through the surrounding rock.

Answer: In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

internet

Answer:

I believe you can evaporate the water.

Explanation:

If you evaporate the water, it leaves the baking soda particles.

Answer:

16.9g

Explanation:Cu+2AgNO3→2Ag+Cu(NO3)2  

Cu will likely have a +2 oxidation state. It is higher in the activity series than Ag, so it is a stronger reducing agent and will reduce Ag in a displacement reaction. Then you need to balance the coefficients knowing than NO3 is -1 and Ag is +1.

Then to calculate the theoretical yield you need to compare moles of the reactants:

m(Cu)=5g

M(Cu)=63.55

n(Cu)=5/63.55=0.0787

By comparing coefficients you require twice as much silver: 0.157mol

n(Ag)=0.157

M(Ag)=107.86

m(Ag)=0.157x107.86=16.9g

Hence, the theoretical yield of this reaction would be 16.9g

Answer: hewo, there! your answer is  Below

d.) 2CuCl + Cl2yields 2CuCl2

Explanation:

A synthesis reaction, also known as a combination reaction, is where two (or more) compounds combine to form a single compound.

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Answer:

salty and

Crystals or white crystalline powder.

Transparent and colourless in crystalline form – rather like ice.

Crystallises in the isometric system, usually in the form of cubes.

Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°).

Slightly soluble in alcohol, but insoluble in concentrated hydrochloric acid.

Explanation:

Answer:

sea salt, black salt I only know two of them

Answer:

1,110.48 mL

Explanation:

37°C is 310K and 132°C is 405K

V/V' = T/T'

850/V' = 310/405

V' = (850×405)/310

=> V' = 1110.48 mL

Answer: a) pH = 2.56 , acidic

b) pH = 2.38, acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

[tex]pH=-\log [H^+][/tex]

a) [tex][H^+]=2.7\times 10^{-3}[/tex]

Putting in the values:

[tex]pH=-\log[2.7\times 10^{-3}][/tex]

[tex]pH=2.56[/tex]

Thus as pH is less than 7, the solution is acidic.

b) [tex][H^+]=4.1\times 10^{-3}[/tex]

Putting in the values:

[tex]pH=-\log[4.1\times 10^{-3}][/tex]

[tex]pH=2.38[/tex]

Thus as pH is less than 7, the solution is acidic.

Answer:

CH2 = CH2 + 1/2 O2  -Ag--> CH2-O-CH2

Explanation:

Producing Epoxyethane by reacting ethene in presence of a silver catalyst with a limited amount of oxygen. The temperature range of the reaction is 250 - 300°C.

The balanced reaction is as follows -

CH2 = CH2 + 1/2 O2 (Reactants) -silver catalyst--> CH2-O-CH2 (Product)

Answer:

27.99 dm³

Explanation:

Applying

PV = nRT................ Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

From the question, we were aksed to find V.

Therefore we make V the subject of the equation

V = nRT/P................ Equation 2

Given: n = 1.31 moles, T = 37°C = 310K, P = 904 mmHg = (904×0.001316) = 1.1897 atm

Constant: R = 0.082 atm.dm³/K.mol

Substitute these values into equation 2

V = (1.31×310×0.082)/(1.1897)

V = 27.99 dm³

Answer:

its B.)

Explanation:

B.) Light travels in a straight line. :))

Answer:3.4

Explanation: