Determing Valence Electrons
Use your periodic table to determine the correct number of valence electrons for the elements below
Element
Group Number
Valence
Electrons
Period
Energy Levels
+
Cesium (Cs)
lodine 0
Arsenic (As)
Gallium (Ga)

Answer:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

Answer:

Dry Chemical Extinguishers

Explanation:

They are found in apartments,homes and any other place that you live.

Answer:

Kelvin

Explanation:

Kelvin is the most suitable for measuring the heat of the sun because it is an absolute temperature scale and does not have a negative range, which makes it convenient for high temperature measurements. The temperature of the sun's surface ranges from about 5,500 to 6,000 K, so it would not be possible to measure it accurately using Celsius or Fahrenheit, which are relative temperature scales with a negative range.

Correct me if I’m wrong.

According to law of conservation of mass, the number of molecules are conserved and there are equal number of  molecules in the reactants as in the products.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

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Answer:

bro Ur in my school lol

Explanation:

Answer:

Explanation:

There will be no attractive or repulsive force between the two types of magnets. its A i took this quiz and got it correct. ^^

Explanation:

Hydrogen bonding, present in alcohols but not hydrocarbons, leads to strong intermolecular forces and increases the boiling point significantly.

For example:

Glycerol has 3 OH groups, which lead to a much more extensive hydrogen-bonding network and a higher boiling point compared to the 1 OH or 2 OH in other chains.

Answer:

Ba, Ca, Mn, Ni

Explanation:

The difference in Ea between the uncatalyzed and catalyzed reactions at T = 280 K is approximately 43.6 kJ/mol.

To calculate the difference in activation energy (Ea) between the uncatalyzed and catalyzed reactions at T=280K, we can use the Arrhenius equation:

k = Ae^(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant (8.314 J/mol*K), and T is the temperature in Kelvin.

Given that the enzyme-catalyzed reaction is 1.84 x 10⁵ times faster than the uncatalyzed reaction, we can write the ratio of the rate constants:

k_catalyzed / k_uncatalyzed = 1.84 x 10⁵

Using the Arrhenius equation, we can write:

Ae^(-Ea_catalyzed/RT) / Ae^(-Ea_uncatalyzed/RT) = 1.84 x 10⁵

We can simplify this equation by cancelling out the pre-exponential factor (A) and rearranging the terms:

Ea_uncatalyzed - Ea_catalyzed = -RT ln(1.84 x 10⁵)

Now, we can plug in the values for R and T:

Ea_uncatalyzed - Ea_catalyzed = -(8.314 J/mol*K) * (280 K) * ln(1.84 x 10⁵)

Ea_uncatalyzed - Ea_catalyzed ≈ 43.6 kJ/mol

Thus, the difference in activation energy between the uncatalyzed and catalyzed reactions at T=280K is approximately 43.6 kJ/mol.

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The nature of a volcanic eruption (i.e. how explosive) is determined largely by the chemistry of the magma.

When lava and gas are released from a volcano, often explosively, this is known as an eruption. The most dangerous sort of eruption is known as a "glowing avalanche," which happens when recently erupted lava rolls down a volcano's flanks.

When magma, or molten rock, rises to the surface, volcanoes erupt. When the earth's mantle melts, magma is created. Where tectonic plates are separating or being driven beneath one another, melting may occur. Magma rises towards the Earth's surface because it is lighter than rock.

Volcanoes erupt with a powerfully destructive mixture of ash, lava, hot, toxic gases, and rock. Explosions from volcanoes have claimed lives. Volcanic eruptions can bring forth additional health risks such wildfires, floods, mudslides, electricity outages, and contaminated drinking water.

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Answer:

Its food for cannibals.

The branch of chemistry is Stoichiometry

Chemistry's study of numerical relationships in chemical reactions is known as stoichiometry. The Law of Conservation of Mass serves as its foundation. Although the elements that reactants and products are associated with change frequently during a reaction, all chemical reactions contain the same elements as reactants and products.

Any chemical equation must be balanced, and this is done by comparing the number of atoms utilized as reactants and products. In essence, it denotes how the reactant and product are related. There is no qualitative analysis involved; merely a quantitative one. n To determine the amount of moles used in the reactant and product of the particles, stoichiometry is the study of chemical reactions.

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Explanation:

The composition of the gases never changes until the mesosphere and the thermosphere. -carbon dioxide, oxygen, and methane are only found in the troposphere. -Permanent gases stay the same until you reach the thermosphere.

When energy depleted elements associated with a proton are accepted by an organic molecule the process is called Fermentation.

Fermentation is a metabolic process that causes a chemical change inside body by the actions of enzymes.

The main purpose of fermentation is to generate NAD+ and 32 ATP in the presence of oxygen.

Fermentation allows cells to survive without using ATP.

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6C(s) + 6H2(g) + 3O2(g) ⇄ C6H12O6(s) is  a balanced chemical equation for the standard formation reaction of solid glucose.

"Balancing by inspection," also referred to as trial and error, is the most basic and widely applicable technique for balancing chemical equations. There are a few techniques that can be applied to cut down on the number of trials and errors necessary to arrive at an equation that is ultimately correctly balanced. The law of conservation of matter must be followed for a chemical equation to be considered balanced. Chemical equations use two different kinds of numbers. In the chemical formulas of the reactants and products, there are subscripts. Additionally, coefficients are used to show how many molecules of a substance are consumed or produced before chemical formulas.

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Answer:

hi I believe the answer is (C)

Explanation:

I'm not 100%, sure if (C) is the right answer sorry I just have a feeling that's it (C) and also after I did a little tad bit of research but I'm sorry if it isn't right. ( well I'm going to go to sleep.,. I hope you get a good grade in your assignment:>)

If the concentration of A is doubled and the concentration of B is tripled, the reaction rate will increase by a factor that depends on the reaction's rate equation.

The specific factor by which the reaction rate will increase cannot be determined without knowing the rate equation and the respective concentrations' exponents.

The rate of a chemical reaction is typically determined by the concentrations of the reactants, as described by the rate equation. However, without knowing the rate equation and the exponents associated with the concentrations of A and B, it is not possible to determine the exact factor by which the reaction rate will increase.

The rate equation provides information on how changes in reactant concentrations affect the reaction rate. In some cases, doubling the concentration of A and tripling the concentration of B may result in an increase in the reaction rate, but the specific factor of increase can only be determined by analyzing the rate equation.

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According to Gay-Lussac's law, if the original temperature is doubled at constant volume the new pressure is 6 atmospheres.

Gay-Lussac's law is defined as a gas law which states that the pressure which is exerted by the gas is directly proportional to  temperature and at a constant volume.The law was proposed by    the scientist named Joseph Gay-Lussac in the year 1808.

The pressure of the gas at constant volume reduces constantly at a rate  as  the gas is cooled till it undergoes condensation .

It is given by the formula, P₁/T₁=P₂/T₂ substitution of values  in the formula gives P₂=3×546/273=6 atmospheres.

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Answer:

no thanks

Explanation:

Answer:

I'd be down.

Explanation:

The reaction is in order relative to I in the number 1. when the oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the stoichiometry.

In each of the reactants, the rate law displays the sequence in which a certain reaction occurs. The rate rule is Rate = k [H3AsO4] [I] [H3O+], and it applies to the reaction H3AsO4 + 3 I + 2 H3O+ ------> H3AsO3 + I3 I + H2O.

The reaction is first order with regard to each of the reactants, according to the interpretation of this. Consequently, the reaction is of the order of 1, relative to I.

The pace at which a chemical reaction occurs is known as the reaction rate or rate of reaction, and it is proportional to both the rise in product concentration per unit time and the fall in reactant concentration per unit time. Variable reaction times

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When the stoichiometric oxidation of iodide ions by arsenic acid in an acidic aqueous solution occurs, the reaction is in order relative to I in number 1.

The rate law illustrates the order in which various reactions take place in each reactant. The reaction H3AsO4 + 3 I + 2 H3O+ follows the rate rule Rate = k [H3AsO4] [I] [H3O+]. H3AsO3 + I3 I + H2O is the equation.

The interpretation of this is that the reaction is first order with respect to each of the reactants. As a result, in relation to I, the reaction is of order 1.

The reaction rate, also known as the rate of reaction, is the rate at which a chemical reaction takes place. It is proportional to both the increase in product concentration per unit of time and the decrease in reactant concentration per unit of time. different reaction times.

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Answer: Soils are formed through the interaction of five major factors: time, climate, parent material, topography and relief, and organisms.

Soil structure affects plant growth in many, often surprising, ways. The most obvious effects are on root growth, which is strongly inhibited by hard soil, and which in turn influences the ability of the root system to extract adequate water and nutrients from the soil.

Explanation:

https://www.publish.csiro.au/sr/pdf/SR9910717

This is where I gather some info.  

Answer:

0.200 M

Explanation:

Step 1: Given data

Step 2: Calculate the moles (n) of CoCl₂ (solute)

We will use the following expression.

n = m / M

n = 2.60 g / (130. g/mol) = 0.0200 mol

Step 3: Calculate the molar concentration of the solution

Molarity is equal to the moles of solute divided by the liters of solution.

M = n/V

M = 0.0200 mol/0.100 L = 0.200 M

The Unsaturated alkene describes the molecule shown below.so, option (a) is correct.

What is Unsaturated alkene ?

Unsaturated hydrocarbons are organic substances that are only composed of carbon and hydrogen atoms and have two or three bonds between two neighbouring carbon atoms.

Since alkene molecules contain a carbon-carbon double bond, which causes them to exhibit distinctive addition reactions, alkenes are also known as unsaturated hydrocarbons.

What is molecule ?

A molecule is a collection of at least two chemically bound atoms from the same or distinct elements. One molecule of water, for instance, is created when two hydrogen atoms and one oxygen atom combine.

Therefore, Unsaturated alkene describes the molecule shown below.so, option (a) is correct.

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More amount of sugar can be dissolved in a saturated sugar water solution by adding more sugar and heating the solution.

Saturated solution is defined as a solution in which water ,or any solvent, had dissolved as much of any substance as it can. Generally, a saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.

In any saturated solution the quantity of solute dissolved in the solvent is in the maximum quantity as possible, keeping the existing temperature and pressure constant. All of the dissolved and undissolved solutes remains at equilibrium, leaving no possibility of dissolving any more solute at this temperature and pressure.

But when heat is applied sugar gets easily dissolved in a saturated solution.

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Answer: the answer is b

Explanation:

i got it right

The number of electrons it take to fill the mos formed from the combination of the 3s orbitals of two atoms simply is 14 electrons.

The 3s orbital possess two different spherical nodes which is highly connected with the principal quantum number. In order words, it has 2 radial nodes. Also the shape of the 3s orbital is spherical in shape.

That being said, from the context of the above given task, the number of electrons which fill the mos formed from the combination of the 3s orbitals of two atoms is fourteen electrons.

However, the electron configuration of an atom simply is the arrangement of electrons in the electron shell or orbit of the atom of that element.

In conclusion, it can be deduced from above s orbital has a maximum of two electrons and this energy increases as the orbitals increases.

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Answer:

sodium

Explanation:

Answer:

4.47x10^-4M

Explanation:

The positive difference in concentration of [H⁺] is 4.46 × 10⁻⁴

pH is defined as the negative logarithm of H⁺ ion concentration.

pH is a measure of how acidic or basic a substance is. In our everyday routine, we encounter and drink many liquids with different pH. Water is a neutral substance. Soda and coffee are often acidic.

The pH is an important property, since it affects how substances interact with one another and with our bodies. In our lakes and oceans, pH determines what creatures are able to survive in the water.

Given,

pH of HCl solution = 3.35

concentration of [H⁺] = 4.46 × 10⁻⁴

pH after addition of NaOH = 6.78

concentration of [H⁺] = 1.65 × 10⁻⁷

Difference between concentration of [H⁺] =   4.46 × 10⁻⁴ - 1.65 × 10⁻⁷

=4.46 × 10⁻⁴

Therefore, the positive difference in concentration of [H⁺] is 4.46 × 10⁻⁴

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The  material would get electrons from the source to the load the FASTEST is option B  which is glass.

Glass  is an insulator and does not conduct electricity well. Therefore, it does not impede the flow of electrons. in other words, glass has a high electrical resistivity which means it offer low resistance to the flow of electrons.

Plastic, on the other hand is also an insulator and has a higher electrical resistivity than glass. while it may allow some minimal flow of electrons, it general hinders  the movement of electrons compared to conducive materials.

Gold is a good conductor of electricity, often considered one of the best conductors among common materials. It has low electrical resistivity, allowing electrons to flow easily through it. However, compared to glass, gold is still a slower conductor.

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