Question
Arrange the elements according to atomic radius.
Largest radius to Smallest radius
Answer Bank
K
Ca
Ga
Ge
As
Sc
Br
Kr

The approximate number of molecules in the given set of values is 2.823 × 10²² molecules of CO₂.To calculate the number of molecules (n) of CO₂, we can use the ideal gas law equation:PV = nRT

Where:

P = Pressure (in kPa)

V = Volume (in liters)

n = Number of moles

R = Ideal gas constant (8.314 J/(mol·K))

T = Temperature (in Kelvin),First, let's convert the pressure from kPa to atm (atmospheres) since the ideal gas constant is usually expressed in atm:

1 atm = 101.325 kPa

So, 200 kPa is approximately 1.973 atm.

Now, rearranging the ideal gas law equation to solve for n:

n = (PV) / (RT)

n = (1.973 atm * 0.602 L) / (0.0821 L·atm/(mol·K) * 311 K)

n ≈ 0.0469 mol

Since 1 mole of any substance contains Avogadro's number (6.022 × 10²³) of molecules, the number of molecules (N) can be calculated by multiplying the number of moles by Avogadro's number:

N = n * Avogadro's number

N = 0.0469 mol * (6.022 × 10²³ molecules/mol)

=N ≈ 2.823 × 10²² molecules

Therefore, the approximate number of molecules in the given set of values is 2.823 × 10²² molecules of CO₂.

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Answer:

Ununennium, also known as eka-francium or element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period. It is the lightest element that has not yet been synthesized.

Explanation:

Answer:

9.971 L

Explanation:

To convert mL to L, you need to multiply the given value by a particular conversion written as a fraction. The conversion should compare the amount of mL per every 1 L. It is important to arrange the fraction in a way that allows for the cancellation of units (mL should be in the denominator).

1,000 mL = 1 L

 9,971 mL                 1 L
-----------------  x  ------------------  =  9.971 L
                            1,000 mL

The lower the first ionization energy, the higher the reactivity of the metal.

The metallic character increases as energy from ionization lower. The reactivity of a metal is not balanced with the energy of its first ionization. The higher the first energy of ionization, the higher the metal's reactivity. The lower the first energy of ionization, the higher the metal's reactivity.

Metallic character is inversely proportional to the ionization energy. The reduced ionization energy is the metallic character of the element.

So we can conclude that  Part of metallic character is the ease with which electrons are contrasted from an atom. Ionization Energy calculates the energy required to remove an electron.

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Answer:C

Explanation:

Answer:

Substance D

Explanation:

USA Test Prep Corrections

\( \boxed{\boxed{\mathfrak{ 1\: mole \:of \:Na_2Cr_2O_2\: = \:it's \:Gram\: Mol. \: mass}} }\)

\(\underline{ \mathfrak{ Gram \:molecular \:mass \:of \: \red{ Na_2Cr_2O_2}}}\)

= 2 × 23 + 2 × 52 + 2 × 16

= 182 grams

1 mole of \(Na_2Cr_2O_2\) weighs = 182 g

8 moles weigh = 8× 182

=\( \mathfrak{\blue {\boxed{\underline {1456 \: grams}}}} \)

or

\( \mathfrak{\blue {\boxed{\underline {1. 46 \:kg }}}} \)

Answer:

Everything around you can be broken down into smaller particles called atoms. The particles of one substance are all the same and different substances are made up of different particles.

Explanation:

Answer:

Question: What Is The Correct IUPAC Name For S2F8? X ( ( (I) (IV) Di- Mono- Penta- Tetra- Tri- Hepta- Octa- Hexa- Fluorine Selenide Flourate Sulfide Sodium Sulfate Sulfur Fluoride Hydrate Acid.

Mendeleev sketched out the table he had in mind. Mendeleev created the so-called Periodic Law while assembling these atomic data cards.

Periodic law is defined as a rule that the elements fall into recurrent groupings when enumerated in order of their atomic numbers, causing elements with similar qualities to appear frequently. "The physical and chemical properties of the elements are periodic functions of their atomic numbers," is how the current Periodic law is best summarized.

Mendeleev found that when all the known chemical elements were arranged in order of increasing atomic weight, the resulting table revealed a periodicity, or repeated pattern, of characteristics within groupings of elements.

Thus, Mendeleev sketched out the table he had in mind. Mendeleev created the so-called Periodic Law while assembling these atomic data cards.

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Answer:

I apologize that I'm late and all But your answer is B. Energy Transfer.

Explanation:

The waves transfer energy to the sand for example.

The air particles inside the balloon on heating expanded hence increasing the volume of the ballon and wall of the balloon increase the pressure to maintain equillibirium.

In a balloon, the gas is free to amplify, but not completely loose. In different words, it is a scenario someplace between the two described above. The balloon skin is elastic which draws itself, growing a force vector pointing closer to the interior of the balloon, and the greater the skin is stretched, the stronger the force turns into. Now the gas in the balloon has to create enough strain to make amends for air particles ambient stress, and the elastic force attempting to pull the balloon pores and skin inwards. This means after heating, the gas internal balloon will enlarge since the balloon is not perfectly rigid, but the equilibrium pressure of the gas in the balloon might be better than before because the balloon is pressing in opposition to a greater tightly stretched balloon.

If the fuel had been absolutely loose to expand towards ambient strain, then the heated fuel could increase until it created an awful lot of pressure in keeping with the place as the pressure in keeping with the area performing on it (ambient pressure), in order that the forces cancel out and the piston stops shifting. right here, a temperature increase within the gasoline would translate completely to an extent growth.

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Answer: D

Explanation:

Forces can be divided into those that act by direct contact—such as when you push on a door to open it—and those that act at a distance, where there is no apparent physical contact between the objects. Magnetism, and electrical charge, and gravitation are examples of forces that act at a distance.

Answer:

That is wrong you are suppose to choose one

Explanation: love

FeCl2 + Na2CO3 = FeCO3 + 2NaCl

A 13.0kg iron weightlifting plate has a volume of 1650cm³. Therefore, 7.87g/cm³ is the density of iron plate.

The density of a substance is described as its weight per unit volume. In other words, density is the mass-to-volume ratio or weight per unit volume. It quantifies how much "stuff" a thing possesses inside an unit of volume (cubic meter or cubic centimeter).

Density is a measure of how closely stuff is packed together. Archimedes, a Greek scientist, developed the density principle.

density= mass / volume

            = 13000/  1650

            =7.87g/cm³

Therefore, 7.87g/cm³ is the density of  iron plate.

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Answer:

2.10 moles of O₂

Explanation:

2 H₂O₂ (l) → 2H₂O(l)  + O₂(g)

In this reaction we say, that 2 moles of hydrogen peroxide can decompose to 2 moles of water and 1 mol of oyxgen.

So ratio is 2:1, according to stoichiometry.

If we apply a rule of three;

2 moles of hydrogen peroxide can decompose to 1 mol of oxygen

Then 4.20 moles of hydrogen peroxide may produced (4.20 . 1)/2 =

2.10 moles of O₂

Answer:

see below

Explanation:

1. particle motion

2. The particles of a liquid can slide past one another.

3. the kinetic energy required to break forces between particles

4. increasing its temperature until it transitions from a solid to a liquid

5. A liquid becomes a gas.

[quizlet: captncrun]

Thermal energy is in the form of heat and light is always associated with the random motion of atoms and molecules. That form of kinetic energy is used to the rise in temperature.

Hence the option B is correct.

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Answer:

Explanation:

energy of solar radiation = 70 W / m²

energy absorbed in 1 hour by an area of .18 m²

= 70 x .5 x .18 x 60 x 60 J

= 22.68 x 10³ J

bond energy of i mole bond = 348 x 10³ J

bond energy of 6.02 x 10²³ bonds = 348 x 10³  J

bond energy of one bond = 57.8 x 10⁻²⁰ J  

No of bonds broken by energy 22.68 x 10³

= 22.68 x 10³  / 57.8 x 10⁻²⁰

= .3923 x 10²³

= 39.23 x 10²⁰ .

The value of S2 is S₂ = 2.1 g/L.Approximately 2.1 g of the gas will dissolve in 2 L of water at 0.6 ATM, assuming the temperature remains constant.

To determine the amount of gas that will dissolve in 2 L of water at 0.6 ATM, we can use Henry's law, which states that the solubility of a gas is directly proportional to the partial pressure of the gas above the liquid.

According to Henry's law, the solubility of a gas can be represented as:S₁/P₁ = S₂/P₂,,where S₁ and S₂ are the solubilities of the gas at the respective pressures P₁ and P₂.Given that 7 g of the gas dissolves in 1 L of water at 2.0 ATM, we can consider this as our initial condition, denoted by S₁/P₁.

Now, we need to find the solubility at 0.6 ATM in 2 L of water, denoted by S₂/P₂.Since the temperature remains constant, we can assume that the solubility of the gas does not change. Therefore, we can rewrite the equation as:

S₁/P₁ = S₂/P₂,

Substituting the known values, we have:

(7 g/1 L)/(2.0 ATM) = S₂/(0.6 ATM),

Solving for S₂, we get:

S₂ = (7 g/1 L) * (0.6 ATM)/(2.0 ATM),

S₂ = 2.1 g/L.

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Answer:

They add carbon Dioxide into the air warming the atmosphere which adds to the greenhouse effect, Making the temperature higher

Answer:

hola como esats UwU

Explanation:

yo bien y tu? UwU

Answer:

\(\boxed {\boxed {\sf 0.3 \ mol \ NH_3}}\)

Explanation:

We need to use stiochiometry and a mole to mole conversion to solve this problem.

First, examine the chemical equation. Make sure it is balanced before doing any calculations.

\(N_2+3H_2 \rightarrow 2NH_3\)

It is balanced, so we can also use the coefficients to refer to molar amounts.

So, the equation is also saying that 1 mole of N₂ (no coefficient implies 1) and 3 moles of H₂ react to form 2 moles of NH₃.

\(1 \ mol \ N_2 + 3 \ mol \ H_2 \rightarrow 2 \ mol \ NH_3\)

Now we can use this information to make a ratio. We know that we have 0.45 moles of hydrogen, and we are trying to find the moles of ammonia.

According to the original equation, 3 moles of hydrogen produce 2 moles of ammonia. Let's make a ratio.

\(\frac {3 \ mol \ H_2}{2 \ mol \ NH_3}\)

We have 0.45 moles of hydrogen, so multiply by that number.

\(0.45 \ mol \ H_2 *\frac {3 \ mol \ H_2}{2 \ mol \ NH_3}\)

Flip the ratio so the units of moles of hydrogen cancel.

\(0.45 \ mol \ H_2 *\frac{2 \ mol \ NH_3 }{3 \ mol \ H_2}\)

\(0.45 *\frac{2 \ mol \ NH_3 }{3}\)

\(\frac {0.45 *2 \ }{3} mol \ NH_3\)

\(\frac {0.9 \ }{3} mol \ NH_3\)

\(0.3 \ mol \ NH_3\)

0.3 moles of ammonia are produced when 0.45 moles of hydrogen gas react with nitrogen gas.

The sample weighing 9.49g occupies 68.2 L at 353 K and 2.00 atm.  

What is H2 gas?

H2, hydrogen, is a chemical element having the atomic number 1. Hydrogen is considered the lightest element and also the most abundant in the universe.

At standard conditions, hydrogen would be a gas of diatomic molecules with the formula H2.

Hydrogen is colorless, tasteless, odorless, non toxic, and highly combustible.

Hydrogen is used for many industrial purposes, like refining petrol, producing fertilizers, treating metals, etc.

It is used for exploring space by using liquid hydrogen for rocket fuels, and also to power electrical systems on spacecrafts by using hydrogen fuel cells.

So, therefore, the sample weighing 9.49g occupies 68.2 L at 353 K and 2.00 atm.  

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Answer:

C. Strong electrolytes can be expected to 100% dissociate in aqueous solution

Explanation:

Answer:

9.10% dextrose

Explanation:

To find the mass percent, you need to use the following equation:

                               mass (g) of solute
Mass Percent  =  ---------------------------------  x  100%
                              mass (g) of solution

You can plug the given values into the equation and solve to find the mass percent of dextrose. But first, you need to calculate the mass of the solution.

Mass (solute): 25.0 g

Mass (solution): 250.0 g + 25.0 g = 275 g

                                25.0 grams
Mass Percent  =  ------------------------  x  100%
                                 275 grams

Mass Percent  =  0.0909 x 100%

Mass Percent  =  9.10%

A solution of dextrose contains 25.0 g solute in 250.0 g water. 9.10% is the percentage by mass of dextrose in this solution.

A component's concentration in a combination or compound can be expressed as a mass percent, also known as a weight percent. It shows how much of the total mass of the solution or mixture is made up of the solute's (component's) mass. In chemistry, mass percent is frequently employed and stated as a percentage.

Mass Percent  =     mass (g) of solute/       mass (g) of solution x  100%

Mass (solute): 25.0 g

Mass (solution): 250.0 g + 25.0 g = 275 g

Mass Percent  =25.0 grams /    275 grams x  100%

Mass Percent  =  0.0909 x 100%

Mass Percent  =  9.10%

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Answer:

1120 gm

Explanation:

6. Consider the reaction: CzHo (g) + 02 (8) - 4 CO2(g) + 6H2O (1)

(a) Balance the equation.

(b) How many grams of oxygen are required to react with 10 moles of ethane for a complete

combustion reaction?

FIRST, CORRECT THE EQUATION THEN BALANCE

2C2H6(G) + 7O2------------>  4CO2  + 6H2O

so for 10 moles of ethane, we need

7 X 5 = 35 MOLES O2

=35 MOLES O2

O2 HAS A MOLAR MASS OF 2X16 = 32 gm

35 MOLES OF O2 HAS A MASS OF 35 X 32 =1120 gm

To solve this we must be knowing each and every concept related to environment. Therefore, the correct option is option B among all the given options.

An environment may be simply defined as a system that includes all abiotic and biotic components that have an impact on human life. All flora and animals are considered biotic, or living, elements, whereas water, sunshine, air, temperature, etc. are considered abiotic.

Any good, service, or feature that benefits people and society might be considered one of an environment's resources. They might be anything that fulfills a person's requirements on a daily basis. Amount of oxygen in the water is a biotic factor of an aquarium environment.

Therefore, the correct option is option B.

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Answer: B: Water Temperature

Explanation: k12 test 1.04 Science Life semester 2

Mass that is number of protons and  neutrons is lost in an atom  as a result of radioactive decay.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

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Excess reagents are the chemical species that remain after the reaction completion. 14 gms of aluminum carbonate will be formed.

Grams are the unit of the mass that is defined by the product of the moles and the molar mass of the substance.

The balanced chemical reaction is shown as:

3 K₂CO₃ + 2 Al(NO₃)₃ → Al₂(CO₃)₃ + 6 KNO₃

From the reaction, it can be said that 2 moles of aluminum nitrate are required to produce a mole of aluminum carbonate.

Moles of potassium carbonate are calculated as:

Moles = 24.76 gm ÷ 138.205 g/mol = 0.179 moles

If 3 moles of potassium carbonate produce 1 mole of aluminum carbonate, then 0.179 moles will produce 0.059 moles.

From the moles, mass is calculated as:

Mass = moles × molar mass

= 0.059 moles ×  234.08 g/mol

= 13.97 gms

Therefore, 14 gms of aluminum carbonate will be formed.

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