Which characteristic of life is described as the transfer of DNA from parent to offspring, and is important for keeping a species alive

A. Homeostasis


B. Cell Organization


C. Heredity

Answer:

Below

Explanation:

Each liter contains .591 moles

   each mole is 6.02 x 10^23 particles

.591   x   6.02 x 10^23  = 3.56 x 10^23 particles

Answer:

The ground state electron configuration of Sr (Strontium) is 1s22s22p63s23p64s23d104p65s2. This means that the electrons in the Sr atom occupy the lowest possible energy levels available to them. The electron configuration is written as a series of numbers and letters that indicate the number of electrons in each orbital. In this case, the first electron goes in the 1s orbital, the next two electrons go in the 2s orbital, the next six electrons go in the 2p orbital, the next six electrons go in the 3s orbital, the next six electrons go in the 3p orbital, the next ten electrons go in the 4s orbital, and the final two electrons go in the 5s orbital. When Sr is heated and its electrons are excited, they absorb enough energy to jump to higher energy levels. When these electrons then return to the ground state, they emit light of a specific frequency or color.

Answer:

Infer and form a hypothesis

Explanation:

1 km = 1000m

55.6 km = x m

x = 55.6*1000

x = 55600m

Answer:

55,600 meters

Explanation:

1km=1,000 meters

55.6km= 55,600 meters

In order to find the answer for this question we will use the Molarity formula, which is:

M = n/v

where

M = molar concentration or molarity in mol/L

n = number of mols

v = volume in Liters

Now using the values given in the question we will have:

0.220 = n/0.225

n = 0.0495 moles of solute

Answer:

133.33 g/mol

Explanation:

Molar mass:

Molar is the sum of all the atomic masses of the atoms of the elements present in a compound.

Molar mass of AlCl₃:

Atomic mass of Al = 26.98 amu

Atomic mass of chlorine = 35.45 amu

There are 3 atoms of chlorine present.

35.45×3 = 106.35

Molar mass of AlCl₃ = 26.98  + 106.35  = 133.33 g/mol

The molar mass of AlCl₃ is 133.33 g/mol.

Molar mass of many compounds can be calculated by dividing the mass of the compound by the number of moles of the compound.

Atomic mass of Al = 26.98 amu

Atomic mass of chlorine = 35.45 amu

There are 3 atoms of chlorine present.

35.45 × 3 = 106.35

Molar mass of AlCl₃ = 26.98  + 106.35  = 133.33 g/mol

Thus, the molar mass of AlCl₃ is 133.33 g/mol.

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Explanation: The concentration of a solution helps us to determine the collision speed between particles in a molecule or compound. Knowing the concentrations of components in solutions can help determine the health of the world.

The final value for the enthalpy change of the formation of CO2 and 2H2O from their elements (C, H2, and O2) would be -1410 kJ per mole of CO2 and 2 moles of H2O formed.

The enthalpy change (ΔH) for the reaction CO2 + 2H2O → H2CO3 can be calculated by multiplying the stoichiometric coefficients of the balanced equation by the enthalpy values of the corresponding compounds involved in the reaction.

In the given reaction, the enthalpy change is -1410 kJ. However, it's important to note that this enthalpy change corresponds to a specific reaction and may not directly apply to the formation of CO2 and 2H2O from another reaction or process.

If we assume that the reaction is the formation of one mole of CO2 and two moles of H2O, we can say that the enthalpy change for this specific formation reaction is -1410 kJ.

Therefore, the final value for the enthalpy change of the formation of CO2 and 2H2O from their elements (C, H2, and O2) would be -1410 kJ per mole of CO2 and 2 moles of H2O formed.

It's worth mentioning that the enthalpy change can vary depending on the specific conditions (temperature, pressure, etc.) and the reactants involved in the reaction. Therefore, it's crucial to specify the conditions and reaction context when referring to enthalpy values.

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☁️ Answer ☁️

annyeonghaseyo!

Your answer is:

it can bond with oxygen to form rust or iron oxide. and it can bond with carbon to form steel.

Here's another one: Iron bonds with lots of things: Oxygen (Ferric Oxide = rust),Chlorine (Ferric Chloride]), Fluorine, ... , even other Iron (in aMetallic Bond or crystal).

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

Answer:

P = 14.3 atm

Explanation:

PV = nRT

T = 12 C + 273 = 285K

P = nRT/V

P = 14.0 mol H(0.08205 L * atm/mol * K)(285 K) / 22.9 K

mol, L, and K cancels out

P = 14.3 atm

Answer:

In artificial selection, humans have the capacity to influence certain characteristics of organisms by selective breeding. One can choose desired parental traits determined by genes, which are then passed on to offspring.

Answer:

C6H5S^-

Explanation:

This is because you are removing the hydrogen to make it a conjugate base.

The formula for conjugate base of C6H5SH is C6H5S⁻.

Conjugate base is defined as the substance which is formed when an acid liberate its protons.

The acid donate protons and the acid changes into base.

Conjugate acid is defined as the pair of compound that differs by its protons by gaining protons.

Conjugate acid and base are based in acid base theory.

Thus, the formula for conjugate base of C6H5SH is C6H5S⁻.

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Element which does involve in ionic or covalent bond is 18th group elements that is blue color here. Oxygen forms 2:1 ratio compound with the first group element, purple color. Elements having different charges are red and orange.

Periodic table classify all the known elements into different groups and periods. There are 18 groups. The first and second groups are metals. The middle groups from 3 -12 are transition metals showing variable charges.

Group 18 are all noble gases which are stable and does not takes part in bonding.

Here, the element which does not form ionic or covalent bond is blue, an 18th group element. Element showing variable charges are red and orange, the transition metals.

Oxygen forms compounds in the ratio of 2:1 with first group elements that is purple here.

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Answer:

97.7 L

I found the answer on some website and I got it right after turning it in.

Answer and Explanation:

Photosynthesis reaction involves two reactants, carbon dioxide and water. These two reactants yield two products, namely, oxygen and glucose.

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer: true

Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. An atom's electron shell can accommodate 2n2 electrons (where n is the shell level).

The specific heat capacity of the material is obtained as 0.15 J/g°C.

We know that the term specific heat capacity has to do with the heat that is able to cause the temperature of 1 Kg of a material to rise by 1K. We know that there are some materials that are able to rise in temperature much more than other substances when they are heated.

We are told that the heat that is absorbed by the material is 143 cal or 598 J

Thus;

H = mcdT

m = mass of the object

c = specific heat capacity of the material

dT = temperature change

Then;

598 = 111.4 * c * (65.6 -  29.5)

c = 598/111.4 * (65.6 -  29.5)

c = 0.15 J/g°C

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Answer:

I think its A. S and Cl

Explanation:

The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A

In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).

When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.

Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.

In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.

The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A

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When the equilibrium constant is higher than one, it indicates that the reaction prefers to produce products, whereas if the equilibrium constant is less than one, it indicates that the reaction prefers to produce reactants. If the equilibrium constant is equal to one, the reaction proceeds in both directions equally.

In a chemical reaction, exothermic reactions are defined as reactions that release heat into their environment. It implies that heat is given off when reactants are converted to products. At equilibrium, an exothermic reaction continues to be exothermic, meaning that heat is given off even after the reaction reaches a state of equilibrium.There are two types of reactions: exothermic and endothermic.

A reaction is classified as exothermic if it releases heat, and endothermic if it absorbs heat. The direction of the reaction is determined by whether it is exothermic or endothermic. At equilibrium, the reaction is no longer moving forwards or backwards. It's also worth noting that reactions can be exothermic in one direction and endothermic in the other.

The equilibrium constant (K) is defined as the ratio of the concentration of products to the concentration of reactants in the chemical reaction equation. It is used to express how much of the products is generated by the reaction in comparison to the reactants.  the equilibrium constant aids in the identification of the direction in which the reaction will proceed at equilibrium.

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A

think of this way: in Florida and many other costal places, people have sand in their backyards to limit flooding and things due to being so close to the ocean.

Molar mass of NH_3

\(\\ \sf\longmapsto 14u+3(1u)\)

\(\\ \sf\longmapsto 14u+3u\)

\(\\ \sf\longmapsto 17g/mol\)

We know.

No of moles=Given mass/Molar mass

\(\\ \sf\longmapsto Given\;Mass=17(5)\)

\(\\ \sf\longmapsto Given \:Mass\:of\:NH_3=85g\)

Now

Lets write the balanced equation

\(\\ \sf\longmapsto N_2+3H_2=2NH_3\)

Now

\(\boxed{\sf No\:of\:Molecules =No\:of\;moles\times Avagadro\:no}\)

For Hydrogen

\(\\ \sf\longmapsto 3\times 6.023\times 10^{23}\)

\(\\ \sf\longmapsto 18.069\times 10^{23}\)

\(\\ \sf\longmapsto 1.8\times 10^{22}molecules\)

For Ammonia

\(\\ \sf\longmapsto 2\times 6.023\times 10^{23}\)

\(\\ \sf\longmapsto 12.046\times 10^{23}\)

\(\\ \sf\longmapsto 1.2\times 10^{22}molecules\)

For Nitrogen

\(\\ \sf\longmapsto 1\times 6.023\times 10^{23}\)

\(\\ \sf\longmapsto 6.023\times 10^{23}molecules\)

1.25 moles of \(CO_{2}\) are required to react with 2.50 moles of \(NH_{3}\).

What are the moles?

Moles are a unit of measurement used in chemistry to express the amount of a substance. One mole of a substance is equal to its molecular weight expressed in grams. In other words, one mole of a substance contains 6.022 x \(10^{23}\) individual particles (atoms, molecules, or ions). The number of moles of a substance can be calculated by dividing its mass in grams by its molecular weight or by using the ideal gas law PV=nRT, where n is the number of moles.

The balanced chemical equation is:

\(2NH_{3}\)(g) + \(CO_{2}\)(g) → \((NH_{2})_{2}CO\)(aq) + \(H_{2}O\)(l)

From the balanced equation, we can see that 1 mole of \(CO_{2}\) reacts with 2 moles of \(NH_{3}\).

Therefore, to determine the moles of \(CO_{2}\) required to react with 2.50 moles of \(NH_{3}\), we need to use the mole ratio from the balanced equation:

2 \(NH_{3}\) : 1 \(CO_{2}\)

2.50 moles \(NH_{3}\) * (1 mole \(CO_{2}\) / 2 moles \(NH_{3}\)) = 1.25 moles \(CO_{2}\)

Therefore, 1.25 moles of \(CO_{2}\) are required to react with 2.50 moles of \(NH_{3}\).

What is molecular weight ?

Molecular weight, also known as molar mass, is the mass of one mole of a substance. It is expressed in units of grams per mole (g/mol). The molecular weight of a compound is determined by adding up the atomic weights of all the atoms in the molecule.

What is substance?

In chemistry, a substance is a form of matter that has constant chemical composition and characteristic properties. It may be an element or a compound made up of two or more elements chemically combined in a fixed proportion. Examples of substances include pure water, carbon dioxide gas, and sodium chloride (table salt).

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Answer:

A green liquid becoming a red liquid.

Explanation:

If the color change is unexpected it is a chemical change.

(If 2 clear liquids make a black, red, green, ect color it is a chemical change)

no normal color mix makes green turn red.

Answer:

1. Some combination of ions form a solid precipitate because it is not favorable for the ions to become solvated (dissolved). Large and lowly charged ions tend to form precipitates, especially metals such as lead, barium, and silver.

2.
a. Pb(NO3)2 + 2KI -> 2KNO3 + PbI2

b. PbI2 is a precipitate because no other combinations of cations and anions will make an insoluble compound. KI, KNO3, and Pb(NO3)2 are all soluble.

c.

\(Pb^{2+}(aq) + 2NO_3^{-}(aq) + 2K^+(aq) + 2I^-{aq} = > PbI_2(s) + 2NO_3^{-}(aq) + 2K^+{(aq)}\\\\\)

is the ionic equation. Spectator ions are NO3- and K+

d.

\(Pb^{2+}(aq)+ 2I^-{aq} = > PbI_2(s) \\\)  is the net ionic equation

ask questions in comments if you have any

Answer:

yes

Explanation:

clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals