Which of these first names is not feminine: lisa, pauline, adrien?

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

The molar mass of Ferric Oxide (Fe2O3) is calculated as follows:

Fe: (2 atoms) x (56 g/mol) = 112 g/mol

O: (3 atoms) x (16 g/mol) = 48 g/mol

Fe2O3 = 112 g/mol + 48 g/mol = 160 g/mol

The molar mass of Lactic acid (C3H6O3) is calculated as follows:

C: (3 atoms) x (12.01 g/mol) = 36.03 g/mol

H: (6 atoms) x (1.01 g/mol) = 6.06 g/mol

O: (3 atoms) x (16 g/mol) = 48 g/mol

C3H6O3 = 36.03 g/mol + 6.06 g/mol + 48 g/mol = 90.09 g/mol

The molar mass of water (H2O) is calculated as follows:

H: (2 atoms) x (1.01 g/mol) = 2.02 g/mol

O: (1 atom) x (16 g/mol) = 16 g/mol

H2O = 2.02 g/mol + 16 g/mol = 18.02 g/mol

The molar mass of ascorbic acid (C6H8O6) is calculated as follows:

C: (6 atoms) x (12.01 g/mol) = 72.06 g/mol

H: (8 atoms) x (1.01 g/mol) = 8.08 g/mol

O: (6 atoms) x (16 g/mol) = 96 g/mol

C6H8O6 = 72.06 g/mol + 8.08 g/mol + 96 g/mol = 176.14 g/mol

We are given –

__________________________________________

Molar Mass of \(\bf K_2SO_4 \) –

\(\qquad\) \(\twoheadrightarrow\bf 39.09 \times 2 + 32 + (16 \times 4)\)

\(\qquad\) \(\twoheadrightarrow\bf 174.2\)

Using formula –

\(\qquad\) \(\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W\times 1000}{MV}}\)

\(\qquad\) \(\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 9.51 \times 1000}{174.2\times 750}\)

\(\qquad\) \(\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{9510}{174.2 \times 750}\)

\(\qquad\) \(\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = 0.073M} \)

___________________________________________

Based on the information on the student looking for an element that will bond with sodium, the element that will likely bond with sodium is bromine.

Elements bond with one another in a chemical manner to form compounds, which cannot be broken down into their constituent elements without being destroyed.

According to this question, a student is looking for an element that will bond with sodium (Na) with the knowledge that table salt is a compound of sodium and chlorine (Cl).

This suggests that an element that will likely bond with sodium must be in the same group with chlorine because they will possess the same chemical properties.

Therefore, based on this information, the element that will likely bond with sodium is bromine.

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In plants, the Calvin cycle and gluconeogenesis enzymes are most active under solution conditions with high pH and high [Mg2+]. So the correct option is d) high pH, high [Mg2+].

The optimal pH for the Calvin cycle enzymes in plants is generally slightly alkaline, ranging from pH 7.5 to 8.5, which is typically found in the stroma of chloroplasts. . Magnesium ions are required for the binding of substrates and stabilization of enzyme-substrate complexes in the Calvin cycle. Therefore, high pH and high concentrations of magnesium ions (Mg2+) would be favorable for the activity of Calvin cycle enzymes in plants. It's worth mentioning that the term "gluconeogenesis" is not typically used in the context of plants, as plants primarily undergo photosynthesis to synthesize glucose from carbon dioxide and water,

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Answer:

Al + 3NaOH  = Al(OH)₃ +3Na

Explanation:

The reaction is given as:

            Al + NaOH  = Al(OH)₃ + Na

This reaction is called a single displacement reaction in which one specie displaces another from a solution.

 To balance the equation:

                aAl + bNaOH  = cAl(OH)₃ + dNa

a, b, c and d are the coefficient that will balance the equation:

     Conserving Al;

                 a = c

     Conserving Na;

                b  = d

     Conserving O;

                 b  = 3c

     Conserving H;

                b = 3c

Let a  = 1, c = 1, b = 3 and d = 3

             Al + 3NaOH  = Al(OH)₃ +3Na

Considering the definition of molar mass, the molar mass of NaOH is 40 g/mole.

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound NaOH is calculated as:

NaOH=  1× 23 g/mole +  + 1× 16 g/mole + 1× 1 g/mole

Solving:

NaOH= 40 g/mole

Finally, the molar mass of NaOH is 40 g/mole.

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The pots and other articles made from clay hardened by heat is called ceramics..

HOPE IT'S HELPFUL FOR U MATE!!!!

Answer:

i've had my ups and down but i'm alright

Explanation:

no need to explain, enjoy your day

0.0102 moles Na₂CO₃ is  1.08g of Na₂CO₃ are necessaries .

Define Stoichiometry .

The quantitative study of the reactants and products involved in a chemical reaction .

What is a mole ?

A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.

How to calculate the molecular weight of a given compound ?

Count the number of atoms of each element, and then multiply that number by the element's atomic weight.

Based on the reaction :

CaCl₂ + Na₂CO₃ → 2NaCl + CaCO₃

1 mole of CaCl₂ reacts per mole of Na₂CO₃

Further we are suppose to calculate number of moles of CaCl2•2H2O present in 1.50 g.

To solve this question we must find the moles of CaCl2•2H2O using its molar mass (147.0146g/mol).

No. of moles = Moles CaCl₂ = Moles of Na₂CO₃ necessaries to reach stoichiometric quantities.

Then find then the mass we must use molar mass of Na₂CO₃ (105.99g/mol):

Moles CaCl₂.2H₂O:

1.50g * (1mol / 147.0146g) = 0.0102 moles CaCl₂.2H₂O = 0.0102moles CaCl₂

Moles Na₂CO₃:

0.0102 moles Na₂CO₃

Mass Na₂CO₃:

0.0102 moles * (105.99g / mol) =

1.08g of Na₂CO₃ are present

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the first one is ideal

I'm not sure about the last one sorry

Answer:

First question:

b. Ideal machine

last question:

a. 9 × 10^10 J

Explanation:

\({ \bf{E = m {c}^{2} }} \\ { \sf{E = (1 \times {10}^{ - 6} ) \times {(3 \times 10 {}^{8}) }^{2} }} \\ { \sf{E = 9 \times {10}^{10} \: joules }}\)

In the context of equilibrium in biological tissues, the direction of the equilibrium shift (forward or reverse) depends on the specific reaction occurring within the tissues.

In general, the direction of the shift is influenced by factors such as the concentration of reactants and products, temperature, and pressure. To give a more accurate answer, it would be helpful to know the specific reaction or process involved in the tissues.

The direction of the equilibrium shift in tissues depends on the specific chemical reaction taking place. It can shift in either the forward or reverse direction depending on the conditions and the concentrations of reactants and products. Factors such as temperature, pressure, and the presence of catalysts can also affect the direction of the equilibrium shift. Therefore, a specific example is needed to determine the direction of equilibrium shift in tissues for a particular chemical reaction.

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To convert (CH3CH2)3CC=CH, the following reagents are needed:
1) Hydrogen gas (H2)
2) A catalyst, such as platinum (Pt) or palladium (Pd)

The reaction is as follows:
(CH3CH2)3CC=CH + H2 → (CH3CH2)3CCH2CH3

This reaction is known as hydrogenation, in which hydrogen is added to a double bond to convert it to a single bond. The catalyst is needed to speed up the reaction and make it more efficient.

In summary, the reagents needed to convert (CH3CH2)3CC=CH are hydrogen gas (H2) and a catalyst (Pt or Pd).

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Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

The given reaction is: 2 NOCl(g) → 2 NO(g) + Cl2(g)

To compare the rates of the reactants and products, we can look at the stoichiometric coefficients in the balanced equation.

According to the stoichiometry of the reaction, for every 2 moles of NOCl consumed, 2 moles of NO are produced, and 1 mole of Cl2 is produced.

Based on this information, the correct relationship that compares the rates of the reactants and products is:

A. [NOCl] / Δt = -2 [NO] / Δt = -1/2 [Cl2] / Δt

This relationship indicates that the rate of disappearance of NOCl is

twice the rate of appearance of NO and half the rate of appearance of Cl2.

Therefore, the correct option is A.

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Answer:

I belive the answer is D

Explanation:

D. 100g, because the volume of gas inside the balloon has increased​

In chemical reactions that occurs in closed systems, the amount of matter is conserved. The total mass of the system is conserved because the gas did not escape and the volume has increased,

Answer:

d

Explanation:

Answer:

Alkaline do not conduct electricity so they can't be recharged

Explanation:

base don't conduct electricity

The conductivity of metalloids can be compared to the conductivity of metals and nonmetals because metalloids conduct electricity better than nonmetals, but not as well as metals (Option C).

The expression metalloids is a term used to denote chemical elements that have features resembling metals such as an acceptable electrical conductivity, but they are not metals (e.g. boron, germanium, antimony, arsenic, polonium, etc).

Therefore, with this data, we can see that metalloids are similar to metals in electrical conductivity but they are not metals because they do not fit all properties of metals.

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Answer:

16mL

Explanation:

Using the following formula;

CaVa = CbVb

Where;

Where

Ca = concentration/molarity of acid (M)

Va = volume of acid (mL)

Cb = concentration/molarity of base (M)

Vb = volume of base (mL)

According to the information provided in this question;

Ca (HCl) = 2M

Cb (NaOH) = 5M

Va (HCl) = 40mL

Vb (NaOH) = ?

Using CaVa = CbVb

Vb = CaVa/Cb

Vb = 2 × 40/5

Vb = 80/5

Vb = 16mL

Answer:

double

Explanation:

.

Hydroxychloroquine cannot be made from grapefruit and lemon rinds.

Hydroxychloroquine is not a natural compound, rather it can only be synthesized from quinoline molecule in the laboratories.

During the synthesis of hydroxychloroquine, several sequential chemical reactions and purifications are done.

Hydroxychloroquine is used in the treatment of:

But when grapefruit and lemon rinds are boiled in water, a natural chemical compound known as limonene is obtained.

Therefore, hydroxychloroquine cannot be made from grapefruit and lemon rinds,

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Answer:

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.

Explanation:

Answer:

Orange

Explanation:

It has the highest frequency out of all the options.

Molar mass

No of moles

Volume

The volume of the gas in the cylinder is less than the volume of the room, the gas will not displace all the air in the room.

To determine whether the gas will displace all the air in the room, we need to compare the volume of the gas in the cylinder to the volume of the room.

First, we need to convert the volume of the gas cylinder from liters to cubic meters:

V_cylinder = 65 L = 0.065 m^3

Next, we can use the ideal gas law to calculate the number of moles of gas in the cylinder:

PV = nRT

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

Rearranging this equation,

n = PV/RT

where P, V, and T are the initial conditions of the gas in the cylinder.

n = (3.6 × 10^3 kPa)(0.065 m^3)/(8.31 J/(mol K) × 283 K) ≈ 0.89 mol

Next, we can use the volume of one mole of gas at SATP (i.e., 24.8 L/mol) to calculate the volume of gas that was initially in the cylinder:

V_initial = n × 24.8 L/mol ≈ 22.1 L

Since the volume of the gas in the cylinder is less than the volume of the room, the gas will not displace all the air in the room.

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The density of the solid is  6.724 g/ml.

Density is the number of factors which can be people, animals, vegetation, or objects in a sure place. To calculate density, you divide the number of objects by the dimension of the place. The populace density of a rustic is the wide variety of human beings in that us of a divided by means of the location in square kilometers or miles.

The density of an amount to being counted is its mass divided by means of its quantity. it also includes measured at zero °C and at 1 atmosphere of stress. Density is vital in figuring out the buoyancy of materials in fluids, as well as in evaluating materials and other measurements.

The density of an object is certainly one of its maximum crucial and easily-measured physical properties. Densities are extensively used to perceive natural substances and to represent and estimate the composition of many varieties of combos.

density = mass/ volume

      = 975g/145ml

      = 6.724 g/ml

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Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

mass of metal = 35.60 g

volume = 4 mL

The density of the metal is

\(density = \frac{35.60}{4} \\ \)

We have the final answer as

Hope this helps you