show your work

5.62m =_______ cm
5310mL=_______L
85mg=_______g
2.54L=_______mL
455g= _______kg
5500mm=_________m
0.00045 m=_________cm

​

Answer:

Oxygen and Carbon are in the non-metal section. Both are in 2nd period while Carbon is in group 4A and Oxygen is in group 6A.

Oxygen has more valence electrons than carbon. I wish I could give you a more accurate explanation why on paper, but all you need to do is count the electrons on the largest shell.

Here's the orbital notation of Carbon: 1s^2 2s^2 2px^1 py^1

Carbon's largest shell is 2. Count the electrons on shell 2, and you get 4 valence electrons.

Orbital notation of Oxygen: 1s^2 2s^2 2px^2 py^1 pz^1

Oxygen's largest shell is 2. So, like with carbon, count the electrons on the largest shell. You get 6.

There is a way easier way of interpreting this where you do not even have to write the orbital notation. I wish I can explain, but just know the periods and the group numbers.

The approximate distance from the far edge of one lobe to the far edge of the other is 2,100,000 light-years.

This distance measures the outer space between the edges of the two lobes in a given time.

The approximate distance from the far edge of one lobe to the far edge of the other in a solar system is about 2,100,000 light-years.

Thus, the approximate distance from the far edge of one lobe to the far edge of the other is 2,100,000 light-years.

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Answer:

Metals tend to have a low attraction for electrons.

The defined value of the principal quantum number (n) associated with 5d is 5.

The principal quantum number (n) is an integer that represents the energy level or shell of an electron in an atom. It determines the overall size and energy of an orbital. In the case of the 5d orbital, the principal quantum number is 5, indicating that the electron occupies the fifth energy level or shell.

The principal quantum number can have any positive integer value starting from 1. As the value of n increases, the energy level and distance from the nucleus also increase. Therefore, the 5d orbital corresponds to the fifth energy level or shell, with a higher energy and larger size compared to lower energy levels like 1s, 2p, or 3d.

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An oxygen tank used in a hospital setting has a pressure of 4.0 atm and contains 60.0% O₂ and 40.0% N₂  by volume. the partial pressure of oxygen in the tank is 2.4 atm

given that :

the total pressure of gas = 4 atm

percent by volume of oxygen = 60.0 % = 0.6

percent by volume of nitrogen = 40 % = 0.4

According to the Dalton's law of partial pressure is given as :

Partial pressure = mole fraction of gas × P total

Partial pressure of O₂  = 0.6 × 4

Partial pressure of O₂ = 2.4 atm

Thus, the partial pressure of the oxygen gas is 2.4 atm.

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The class of the reaction between magnesium metal and oxygen in the air, which results in the formation of magnesium oxide, is oxidation.

Oxidation is a chemical reaction that involves the loss of electrons or an increase in oxidation state. In this case, magnesium metal (Mg) undergoes oxidation as it reacts with oxygen (O_2) in the air. The magnesium atoms lose electrons, transferring them to the oxygen atoms, resulting in the formation of magnesium oxide (MgO).

Magnesium metal is highly reactive and readily oxidizes in the presence of oxygen. The outer layer of magnesium metal reacts with oxygen molecules to form magnesium oxide. This process occurs gradually over time as magnesium atoms on the surface of the metal react with oxygen.

The formation of magnesium oxide is a classic example of an oxidation reaction, where magnesium undergoes oxidation by losing electrons, and oxygen undergoes reduction by gaining electrons. This type of reaction is commonly observed in the corrosion of metals when they are exposed to air or other oxidizing agents.

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How close the magnets are together and which direction the poles are pointed to

The freezing point of the solution containing 60 g of glucose in 250 g of water is -2.48°C.

To calculate the freezing point of the solution, we need to use the formula:

ΔTf = Kf × m

Where ΔTf is the change in freezing point, Kf is the freezing point depression constant of water, and m is the molality of the solution.

First, we need to calculate the molality of the solution:

Moles of glucose = 60 g / 180 g mol^-1 = 0.333 mol
Molality (m) = moles of solute / mass of solvent in kg
           = 0.333 mol / 0.250 kg
           = 1.332 mol kg^-1

Now we can substitute the values into the formula:

ΔTf = Kf × m
ΔTf = 1.86 K kg mol^-1 × 1.332 mol kg^-1
ΔTf = 2.48 K

So the freezing point of the solution is lowered by 2.48 degrees Celsius compared to pure water. To find the actual freezing point of the solution, we need to subtract this value from the freezing point of water (0 degrees Celsius):

Freezing point of solution = 0°C - 2.48°C
                                  = -2.48°C

Therefore, the freezing point of the solution containing 60 g of glucose in 250 g of water is -2.48°C.

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The value of the equilibrium constant is 1.99 × \(10^-^5^0\) .

Given:

Concentration of \(O_2 = 1.6\) × \(10^-^2 M\\\)

Concentration of \(O_3 = 2.86\) × \(10^-^2^8 M\)

A chemical reaction known as an equilibrium reaction occurs when the reactants remain in a stable condition both during and after the reaction.

The given balanced equilibrium reaction is,

\(3O_2 (g) = 2O_3 (g)\)

The expression for equilibrium constant will be,

\(K_c = \frac{[O_3] ^2}{[O_2]^3}\)

Now put all the given values in this formula, and we get

\(K_c = \frac{(2.86 * 10^-^2^8] ^2}{[1.6 * 10 ^-^2]^3}\)

\(K_c = 1.99\) × \(10^-^5^0\)

Therefore, the value of the equilibrium constant is 1.99 × \(10^-^5^0\) .

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Answer:

Explanation:

To find the number of atoms present in 8.500 mole of chlorine atoms, we can use Avogadro's number, which states that one mole of any substance contains 6.022 x 10^23 particles. Therefore, 8.500 moles of chlorine atoms would contain:

8.500 moles x 6.022 x 10^23 atoms/mole = 5.1207 x 10^24 atoms of chlorine

To determine the mass (g) of 15.50 mole of oxygen, we can use the molar mass of oxygen, which is 16.00 g/mol. Therefore, the mass of 15.50 moles of oxygen would be:

15.50 moles x 16.00 g/mol = 248 g of oxygen

To determine the number of moles of helium in 1.953 x 10^8 g of helium, we can use the molar mass of helium, which is 4.00 g/mol. Therefore, the number of moles of helium would be:

1.953 x 10^8 g / 4.00 g/mol = 4.883 x 10^7 moles of helium

To calculate the number of atoms in 147.82 g of sulfur, we first need to find the number of moles of sulfur using the molar mass of sulfur, which is 32.06 g/mol. Therefore, the number of moles of sulfur would be:

147.82 g / 32.06 g/mol = 4.604 moles of sulfur

Next, we can use Avogadro's number to find the number of atoms in 4.604 moles of sulfur:

4.604 moles x 6.022 x 10^23 atoms/mole = 2.772 x 10^24 atoms of sulfur

The molar mass of Co (cobalt) can be found on the periodic table, which is 58.93 g/mol.

To determine the formula mass of Ca3(PO4)2, we need to find the sum of the masses of all the atoms in the formula. The molar masses of Ca, P, and O can be found on the periodic table:

Ca: 40.08 g/mol

P: 30.97 g/mol

O: 16.00 g/mol

Ca3(PO4)2 would contain:

3 atoms of Ca: 3 x 40.08 g/mol = 120.24 g/mol

2 atoms of P: 2 x 30.97 g/mol = 61.94 g/mol

8 atoms of O: 8 x 16.00 g/mol = 128.00 g/mol

Adding these masses together gives us:

120.24 g/mol + 61.94 g/mol + 128.00 g/mol = 310.18 g/mol

Therefore, the formula mass of Ca3(PO4)2 is 310.18 g/mol.

The time required for a reaction to reach equilibrium can depend on the value of Kc, which represents the equilibrium constant. The equilibrium constant, Kc, is determined by the concentrations of the reactants and products at equilibrium.

In general, reactions with a larger Kc value tend to reach equilibrium more quickly than those with a smaller Kc value. This is because a larger Kc indicates that the concentration of products is higher compared to the concentration of reactants at equilibrium. As a result, the reaction proceeds more rapidly to reach the point where the ratio of products to reactants matches the value of Kc.

Therefore, among the given options, the answer would be option (c) where Kc is a very large number. In this case, the reaction would require the least amount of time to reach equilibrium.

It's important to note that the actual time required for a reaction to reach equilibrium depends on various factors such as temperature, pressure, and the presence of catalysts. Additionally, the time required for a reaction to reach equilibrium cannot be determined solely based on the value of Kc. However, in general, a larger Kc value suggests a quicker attainment of equilibrium.

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Answer:

covalent bond- a chemical bond that is the sharing of electron pairs between atoms

R - CO - OH + NaHCO3 → R - CO-O-  Na+     +  H20 + CO2

Here Sodium bicarbonate solution is used to neutralize the excess acetic acid and the acid catalyst in the reaction mixture.

In this reaction the product sodium acetate salt is formed which can be easily removed during work up because of its complete solubility in water. The exact reaction is as follows. Baking soda or bicarbonate of soda is the popular term for sodium bicarbonate, which has the chemical formula NaHCO3 and is also known by its IUPAC designation, sodium hydrogen carbonate[9]. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form the salt. In spite of frequently appearing as a fine powder, sodium bicarbonate is a crystalline white solid. It tastes similar to washing soda, with a mildly salty, alkaline flavor (sodium carbonate). Nahcolite is a type of naturally occurring mineral. It is a part of the mineral natron and is present in many mineral springs as a dissolved substance. Due to its long history of use and variety of names, including baking soda, bread soda, cooking soda, and bicarbonate of soda, the salt is frequently seen next to baking powder in supermarkets.

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Answer:

Testable questions can be answered through investigations that involve experiments, observations, or surveys. Testable questions are answered by collecting and analyzing evidence that is measurable. Testable questions relate to scientific ideas rather than personal preference or moral values.

Explanation:

hope this helps

The initial temperature of the liquid if the final temperature is 189.1°C is 83.62°C.

The temperature of a substance in calorimetry can be calculated using the following expression;

Q = mc∆T

Where;

According to this question, a reaction releases 77.5 kJ and it was used to heat up 471.00 grams of liquid. The change in temperature can be calculated as follows:

77500 = 471 × 1.560 × {189.1°C - T}

77500 = 138,943.116 - 734.76T

77500 - 138,943.116 = -734.76T

T = 61,443.116 ÷ 734.76

T = 83.62°C

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Answer:

boron

Explanation:

boron is a metaloid meaning it has the property of a metal and a non metal located where metals and non metals meet on the periodic table

Answer:

The answer is boron, the second answer is chlorine

Explanation:

edge 2022, have a great day h0mies

Answer:

See explanation

Explanation:

First of all we must remember the statement of Dalton's atomic theory that atoms can neither be created nor destroyed. Clearly, chemical reactions involves rearrangement of atoms of reactant and product molecules.

Since straw contains carbon, hydrogen, and oxygen atoms, it is obvious that there are no gold atoms in it.

If there are no gold atoms in straw, then straw can not be converted into gold by any chemical process because that implies that gold atoms are being 'created' in violation of Dalton's theory.

A substance is held in an open container its particles move fast one another at random speeds but do not leave the container then When enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them

When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed and the particles exert more force on the interior volume of the container and this force is called pressure and in gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container with an increase in temperature, the particles gain kinetic energy and move faster and that's why in the open container particles moves fast one another and when enough heat is removed then the particles no longer have enough speed to overcome the weak attractive forces between them

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Nuclear fission occurs when a nucleus breaks up into two equal fragments that release and separate more atoms. So, the correct option is B.

Nuclear fission is a process in which the nucleus of an atom breaks apart into two or more smaller nuclei. This process releases a significant amount of energy.

This energy is utilized in various applications, including nuclear power generation and nuclear weapons. Nuclear fission reactions are carefully controlled in nuclear power plants to ensure the sustained release of energy without leading to uncontrolled chain reactions. Hence the correct option is B.

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Answer:

I actually have no idea

Explanation:

Sorry my man

Answer:

Explanation:

generator

Answer:  True. Only primary alcohols can be oxidized to carboxylic acids using an oxidizing agent such as potassium permanganate (KMnO4) or chromium trioxide (CrO3) in an acidic solution. Secondary alcohols can be oxidized to ketones, but not to carboxylic acids, while tertiary alcohols cannot be oxidized at all using these reagents.

Explanation:

The idea is to foretell the formation of a carbonyl compound by the reaction between alcohol and too much pyridinium chlorochromate. An oxidizing agent called pyridinium chlorochromate converts the alcohol group into the 1carbonyl group.

The carbonyl molecule that results from the reaction will depend on the reactant's OH group. Pyridinium chlorochromate [PCC] converts primary OH to aldehydes, whereas it converts secondary OH to ketones, and oxidation of tertiary OH has little effect. Alcohols and pyridinium chlorochromate [PCC] react to create a carbonyl molecule.

From primary alcohols to aldehydes and from secondary alcohols to ketones, pyridinium chlorochromate oxidizes alcohols one step up the oxidation ladder. pyridinium chlorochromate will not oxidize aldehydes to carboxylic acids, in contrast to chromic acid. Comparable to Pyridine (the Collins reagent) and CrO3 will both oxidize primary alcohols to aldehydes. Here are two instances of pyridinium chlorochromate being used.

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Answer:

D. Carbon

Explanation:

Graphite, archaically referred to as plumbago, is a crystalline form of the element carbon with its atoms arranged in a hexagonal structure. You'll get the substance when carbon is stacked in sheets. It occurs naturally in this form and is the most stable form of carbon under standard conditions. Under high pressures and temperatures, it converts to diamond. Graphite is used in pencils and lubricants. It is a good conductor of heat and electricity. Its high conductivity makes it useful in electronic products such as electrodes, batteries, and solar panels.

Answer:

0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.

Explanation:

The balanced chemical equation for the reaction of hydrogen and nitrogen to form ammonia is:

N2(g) + 3H2(g) → 2NH3(g)

To determine how many moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen, we need to use the ideal gas law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

First, we need to convert the volume of hydrogen gas to moles using the ideal gas law equation:

n = PV/RT

where P is the pressure in atm, V is the volume in liters, R is the gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.

n = (1.2 atm)(4.0 L)/(0.0821 L·atm/mol·K)(50.0°C + 273) = 0.174 mol H2

Since there is excess nitrogen, all of the hydrogen will react to form ammonia. Using the mole ratio between NH3 and H2 from the balanced chemical equation:

2 mol NH3 / 3 mol H2

we can calculate how many moles of NH3 will be produced:

n(NH3) = (0.174 mol H2) × (2 mol NH3 / 3 mol H2) = 0.116 mol NH3

Therefore, 0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.

Answer:

the answer is D

Explanation: i took the test and it was correct

Explanation:

the sulfur ato is in group 6 of the periodic table. In order to become an ion the ato needs to gain 2 electrons so it has a full outer shell of electron and is stable. so the atom S goes to S2+ + 2e

Radiation is a type of heat transfer that occurs via vacuum, negating the requirement for a physical medium.

Energy that emanates from a source and moves through space at the speed of light is referred to as radiation. This energy has wave-like qualities and is accompanied by an electric field and a magnetic field. Radiation may also be referred to as electromagnetic waves.

As a mutagen, radiation has the potential to eventually cause cancer. Radiation has the power to kill cells or harm the DNA within them, which impairs the cells' capacity for reproduction and may ultimately result in cancer. High energy particles flow through your body when radiation is present.

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One of the three main ways that heat conduction can be delivered is by thermal radiation. Convection and conduction are the other two methods, both of which require matter to transmit heat.

Energy who departs a source and moves via space at the rate of light is referred to as radiation. This energy has wave-like characteristics, and a magnetization and electrical potential complete it. Electromagnetic waves can sometimes be referred to as "radiation."

It can be made artificially or by unstable nuclei disintegrating radioactively. From its source, radiation sends vibrational frequencies or particles in all directions. There are several different forms of energy, each with its own properties and effects.

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