Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.40 L at 890 torr and 23 ?C.
A) How many grams of Cl2 are in the sample?
B) What volume will the Cl2 occupy at STP?
C) At what temperature will the volume be 15.30 L if the pressure is 877 torr ?
D) At what pressure will the volume equal 5.80 L if the temperature is 57°C?

The shell number is denoted by n. When n=2, there will be two subshells or sublevels present in it. They are s and p subshells.

There are 4 quantum numbers which represents the position and orientation of electrons around an atom. The principal quantum number is referred to n. It shows the main level or the main shell the electrons are present. The n can have values of all positive integers. So n can have values 1, 2, 3, 4.....

When n=2, it means that the electron is present in the second shell. In the second shell, there are two subshells. 2s and 2p. 2s shell can accommodate two electrons and 2p can have 6 electrons. So the second shell have a total of 8 electrons.

So there are two sublevels, when n=2.

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Answer:

a) 1s22s22p63s1

b) 3s² 3p¹

c) 1s22s22p63s23p3

d) 3s² 3p⁵

e) 3s2

f) 1s22s22p63s23p2

g) 1s22s22p63s23p4

h) 3s² 3p⁶

The substance that was NOT part of the mixture used in the Urey-Miller experiments is: C. carbon dioxide

The Urey-Miller experiments, conducted in 1952 by Stanley Miller and Harold Urey, aimed to simulate the conditions of early Earth's atmosphere and investigate the formation of organic compounds. The experiments involved creating a mixture of gases thought to be present in the early Earth's atmosphere and subjecting them to electrical discharges to simulate lightning. The purpose was to see if these conditions could produce organic molecules, such as amino acids. The mixture used in the Urey-Miller experiments typically consisted of water (A), hydrogen gas (B), ammonia (D), and methane (E). Carbon dioxide (C) was not part of the original mixture used in these experiments.

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When solid surfaces slide over each other, the kind of friction that occurs is called Sliding Friction.

Answer:

calcium to give calcium oxide to give calcium trioxocabonate (limestone) to give carbondioxide

Answer: A, C, E

Explanation:

Got it right

Answer:

A, C, E

Explanation:

Thank the guy above me <3

Answer:

sup brö how is it back home?

Explanation:

just curious you know

Answer:

\(\huge\boxed{\sf 3 \ electrons}\)

Explanation:

\(1s^22s^22p^1\)

The outermost/valence shell is the second one, seeing from the electronic configuration.

= 2 + 1 = 3 (electrons are raised to the power in the electronic configuration)

Since, the valence shell here is 2, the electrons of second shell will be counted as valence electrons.

\(\rule[225]{225}{2}\)

Answer:

Explanation:

[2-0] NC Special Operation

[2] Supervisor

[2-1] Emergency Response

[2-2] Juggernaut

[2-3] Commander

[2-4] Division Director    

Answer: 0.3224, 7342, 54.32

Explanation:

0.1060 has 4 sig figs (1060 is 4 digits after the decimal point)

If 2 grams of water absorbs 20 calories of heat (assume not during a state change), the resulting water temperature change is - 272.975 °C .

Calculation ,

Formula used : Q = m × Cp × change in temperature

Q = m × Cp × ΔT           ( i )

Where Q is the heat supplied in calories = 20 cal ( given )

m is the mass of water in gram = 2 g  ( given )

Cp is the specific heat capacity of water  at constant pressure = 1 cal / gK ( known )

Thus , after putting the value of heat supplied in calories ,  mass of water and specific heat capacity of water in equation ( i ) we get the value of change in temperature .

1 cal / gK  = 2 g × 20 cal × ΔT

 ΔT = 1 cal / gK / 2 g × 20 cal = 0.025 K

  ΔT = 0.025 K - 273 = - 272.975 °C

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90% of 100.2 g, or 90.18 g, of calcium nitride was produced.

A chemical reaction is a process that changes one group of chemical constituents into another. As reactants are transformed into products, chemical bonds between atoms are formed and broken. Typically, this is an exothermic process that releases energy as heat or light.

Calcium nitride, also known as \(Ca_3N_2\), is created by the interaction of calcium and nitrogen gas. The mass of calcium nitride that is produced when 56.6 g of calcium and 30.5 g of nitrogen gas are combined can be calculated using stoichiometry.

The reaction's balanced equation is as follows: \(3C_a+N_2- > Ca_3N_2\)

Therefore, 3 moles of nitrogen are needed for every 1 mole of calcium. The following equation can be used to determine the moles of calcium

and nitrogen:

Moles of \(C_a\) = 56.6 g / 40 g/mol = 1.415 mol

Moles of \(N_2\) = 30.5 g / 28 g/mol = 1.089 mol

Since nitrogen is the limiting reagent and calcium and nitrogen have a mole ratio of 1.089:1.415, the following formula can be used to get the potential calcium nitride yield:

Theoretical yield = 1.089 mol × 92 g/mol = 100.2 g

The actual yield of calcium nitride is 90% of the theoretical yield because the reaction has a 90% yield. Therefore, 90% of 100.2 g, or 90.18 g, of calcium nitride was produced.

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The boiling point of the sucrose solution would be 3.68 °C compared to the boiling point of pure water.

The boiling point of a solution depends on the concentration of solute particles in the solution, which affects the colligative properties of the solution, such as boiling point elevation.

To calculate the boiling point elevation, we can use the following formula;

ΔTb = Kbm

where ΔTb is the boiling point elevation, Kb is the molal boiling point constant for water (which is a constant value), and bm is the molality of the solution, which is the amount of solute (in moles) per kilogram of solvent.

First, let's calculate the molality of the solution;

moles of sucrose = mass of sucrose / molar mass of sucrose

moles of sucrose = 739 g / 342.3 g/mol (molar mass of sucrose)

Next, let's convert the mass of water to kilograms:

mass of water = 0.300 kg

Now, we can calculate the molality of the solution;

bm = moles of sucrose / mass of water

Plugging in the values;

moles of sucrose = 739 g / 342.3 g/mol ≈ 2.158 mol

mass of water = 0.300 kg

bm = 2.158 mol / 0.300 kg ≈ 7.193 mol/kg

Next, we need to determine the molal boiling point constant (Kb) for water. The molal boiling point constant for water is approximately 0.512 °C kg/mol.

Finally, we can calculate the boiling point elevation;

ΔTb = Kb × bm

ΔTb = 0.512 °C kg/mol × 7.193 mol/kg

≈ 3.68 °C

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Answer

Alkanes

Explanation

The CH3CH2CH2CH3, it falls under a group

So if we can draw it, it will look like this,

This structure only has single bonds

Therefore the homologous series it falls under is Alkanes

Answer:

B (ionic bond)

Explanation:

Because it is! :)

During de novo synthesis, the nitrogens for the nitrogenous bases (pyrimidines and purines) come from aspartate and glutamine.

In particular, aspartate provides the carbon and nitrogen atoms for the pyrimidine ring, while glutamine provides the nitrogen atoms for the purine ring. The carbon atoms for the purine ring are provided by intermediates in the de novo synthesis pathway.

This process involves several enzymes and requires a significant amount of energy. It is important for the synthesis of nucleotides, which are the building blocks of DNA and RNA.

Answer:b

Explanation:

Ionic bonds are formed by I and V

Ionic bonds are formed between two atoms or ions with opposite charges. One atom or ion donates one or more electrons to the other atom or ion, which accepts the electrons, resulting in the formation of an ionic compound.

Ionic bonding typically occurs between a metal and a non-metal, although there are exceptions. Metals tend to lose one or more electrons to become positively charged cations, while non-metals tend to gain one or more electrons to become negatively charged anions.

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Answer:

H-Cl is a polar bond.

Explanation:

a polar bond is when 2 different elements share the same electrons except one is negative charge and the other is positive.

Cl is a negative charge while H gives off a positive charge, these are also the only one that have 2 different elements.

Answer:

Electrostatic charge....

Answer:

a) club soda is a compound

b) Club soda is a manufactured form of carbonated water, commonly used as a drink mixer. Sodium bicarbonate, potassium sulfate, potassium bicarbonate, potassium citrate, or sodium citrate is artificially added to replicate constituents commonly found in natural mineral waters

Answer:

(a)Na₂CO₃ - Sodium carbonate

(b)CaCl₂ - Calcium chloride

(c)CaCO₃ - Calcium carbonate(GCC)

(d)K₂CO₃ - Potassium Carbonate(Vedantu )

Hope it helps!

Answer:

1.) plastics are poor conductors of heat and electricity

2.) plastics are non reactive metals they are not attacked by chemicals

3.) plastics are lightweight strong and durable

4.) plastics can be moulded and dyed easily in many colours like orange, pink ,sky blue , red, green, and e.t.c

the four uses of plastics are:

1.) bakelite is used to make electric switches insulating casings and handle of cookware and tools

2.) melamine is heat resistant and is used to make kitchenware , floor tiles and special suits for firefighters

3.) Teflon is used as a non stick coating on cookware as both water and oil do not stick to it

4.) many plastics are waterproof and therefore

they are used to make Water bottles and waterproof containers

Explanation:

Search it up bro :')

The four properties of plastics are malleability, longevity, cheapness, and poor conductivity.

Plastics are generally very malleable and can be molded into different shapes very easily. Different types of plastics have different melting points, which enables them to be shaped into different shapes and make objects.

Plastics are generally very durable and have a long shelf life. That is the reason why plastics are used to make things that go through a lot of wear and tear. A negative aspect of this is that plastics, when exposed to natural processes of degradation, do not break down easily and harm the environment.

Plastics are usually cheap and can be obtained at a very less price. This helps people afford goods made out of plastic and also reduces the production cost of the goods.

Plastics are generally very poor conductors of heat and electricity. This means that they do not conduct heat and electricity very well, which is why they are used as insulators and wire coverings.

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Answer:

b:  

Jacque could check if the rock layer has fossils in it.

Explanation:

!!!!!! that's what 4 of my teachers said

The number of lewis structure that can be made for butane is only one and the structure for it is described below in the figure.

C4H10 (Butane) lewis structure possess a single bond between the Carbon-Carbon atoms (C) along with a Carbon atom (C) and Hydrogen atom (H). The four Carbon atoms (C) are present at the center and they are surrounded by Hydrogen atoms (H).

Butane is considered a saturated hydrocarbon that has four carbon atoms and 10 hydrogen atoms (single bond between carbon atoms). Here the prefix 'but' signifies  4 carbon atoms and the suffix ‘Ane’ refers to  a member of the alkane series. Butane can be placed in the general formula of alkanes that is CnH₂n⁺²
Here
n =  the number of carbon atoms present.
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