The molecular formula for the structure show below is:

1. CF
2. CF2
3. CF3
4. CF4

Answer:

To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above. Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored.

Explanation:

Answer:

Surface Water - water that collects on the surface of the ground. Hope it helped!

Answer:  surface water is when water is located of top of the Earth for example rivers, creeks, and wetlands.

The first major contributor to the Sun's apparent motion is the fact that Earth orbits the Sun while tilted on its axis. The Earth's axial tilt of approximately 23.5° ensures that observers at different locations will see the Sun reach higher-or-lower positions above the horizon throughout the year.

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Answer:

Because the earth rotation, when we move around the sun for a whole 365 times then we will have passed 1 year.

Answer:

the answer would be ;B compare the volumes of the three cylinders

Answer:

controls stem height in peas, for example, has one allele for tall stems and one allele for short stems. Each pea plant inherits a combination of two alleles from its parents either two alleles for tall stems, two alleles for short stems, or one of each. Individual alleles control the inheritance of traits

Explanation:

Answer:

thermal

Explanation:

Thermal energy is due to the motion of an object's particles, due to the random movement of molecules in a system, thermal energy also known as random or internal kinetic energy is produced, hence option A is correct.

Atoms or molecules in motion are the source of thermal energy. An object's thermal energy rises as its temperature rises because the movement of its molecules or atoms accelerates. It is possible to transmit an object's thermal energy to another.

Thermal energy, also known as random or internal kinetic energy, is created when molecules in a system move randomly, as a result of the motion of an object's particles.

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Answer: [tex]1s^22s^22p^63s^23p^64s^2[/tex] , oxidation state = +2

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom. The electrons are filled according to Afbau's rule in order of increasing energies.

The electronic configuartion of Calcium with atomic number 20  is :

[tex]Ca:20:1s^22s^22p^63s^23p^64s^2[/tex]

As calcium can easily lose its two valence electrons to attain stability , its oxidation state is +2.

[tex]Ca^{2+}:18:1s^22s^22p^63s^23p^6[/tex]

Answer:

(D) a chemical reaction in which both the reactants and products are not being produced or used in any active metabolic pathway

Explanation:

A) a reaction in which the free energy at equilibrium is higher than the energy content at any point away from equilibrium

B) a chemical reaction in which the entropy change in the reaction is just balanced by an opposite entropy change in the cellʹs surroundings

C) an endergonic reaction in an active metabolic pathway where the energy for that reaction is supplied only by heat from the environment

D) a chemical reaction in which both the reactants and products are not being produced or used in any active metabolic pathway

E) no possibility of having chemical equilibrium in any living cell

The correct answer for a reaction that describes chemical equilibrium in a cell would be a chemical reaction in which both the reactants and products are not being produced or used in any active metabolic pathway .

A reaction in chemical equilibrium is a bi-directional reaction in which both the reactants and the products are present in a stoichiometrically balanced way within the system at a given period of time under specific conditions.

From the definition, a reaction would be in equilibrium if

The correct option is, therefore, D

Answer:

They represent the valence electrons, so s and p sublevels only! This does not include the d block!

Answer:

NA=72.264x1023

Explanation:

I got you

Answer:

Explanation:

That in the liquid, the sugar is completely dissolved. Lemon juice, water, and sugar are combined together and form a solution. A solution is a mixture in which the various types of matter are evenly spread out. Water is considered the solvent of lemonade.

Answer:

[2]HBr + [ ] Ba(OH)2 ➖ [ ] BaBr2 + [2] H20

Hope it will help :)

Answer:

Omodium

Explanation:

It’s Umodium

Answer:

the total weight of matter is conserved.

Explanation:

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Answer:

C. Water has a greater density than alcohol.

Explanation:

From the experiment, it can be shown that water has a greater density than the alcohol.

The ice cube is able to float in the water because, the density of the ice is less than the density of the water.

 Density of ice < Density of water

So, the ice cube sinks in alcohol because the density of the ice cube is greater than the density of the alcohol.

 Density of ice > Density of alcohol

Therefore, we can assume that since the density of ice is greater than density of alcohol, then the density of water is greater than that of the alcohol.

Answer:

Boron

Explanation:

The group III A is also known in the periodic table as group 13. The members of the group begin to appear in the second period.

At the beginning of this group III A is boron. Boron is a member of group III A as well as a member or period 2.

Boron is a metalloid and has only three valence electrons as other group III A elements.

Answer:

The heat absorbed to raise temperature : Q = 31350 J

Given

m = mass = 150 g

Δt = Temperature difference : 50 °C

Required

Heat absorbed

Solution

Heat can be formulated

Q = m.c.Δt

The specific heat of water = c = 4.18 J/g °C  

Input the value :

Q = 150 x 4.18 x 50

Q = 31350 J

According to the stoichiometry of the given chemical equation, 13.9939 grams of NaOH would be made with 8.0465 g of Na.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample. It is useful in balancing chemical equations and making solutions of different concentrations.As according to the given chemical equation 46 g sodium gives 80 g sodium hydroxide, thus,  8.0465 g of sodium will give 8.0465×80/46=13.9939 grams.

Thus, 13.9939 grams of NaOH would be made with 8.0465 g of Na.

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Answer:

A

Explanation:

Atoms of elements can lose or gain electrons making them no longer neutral, they become charged. A charged atom is called an ion. When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons.

Answer:

0.67mole

Explanation:

Given parameters:

Mass of potassium permanganate  = 105.66g

Unknown:

Number of moles  = ?

Solution:

To find the number of moles of the given compound;

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of KMnO₄   = 39 + 55 + 4(16) = 158g/mol

  Number of moles = [tex]\frac{105.66}{158}[/tex]   = 0.67mole

Answer:

he molar mass is defined as the mass in grams of 1 mol of that substance. One mole of isotopically pure carbon-12 has a mass of 12 g

Explanation:

Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces.

Answer:

B.Unbalanced .............

Answer:

When 20.0 grams of aluminum and 30.0 grams of chlorine are reacted according to the above equation, the chlorine is the limiting reactant and the maximum yield of aluminum chloride is 0.28 moles or 37.33 grams.

Temperature does not change, remains 264 K

Given

V₁= 1.2 L

P₁ = 1.8 atm

T₁ = 264

Required

The new temperature

Solution

The volume was doubled = 2V₁ = 2 x 1.2 = 2.4 L(V2)

The pressure was halved = 0.5P₁ = 0.5 x 1.8 = 0.9 atm(P2)

Combined gas law :

P₁V₁/T₁=P₂V₂/T₂

Input the value :

[tex]\tt \dfrac{1.8\times 1.2}{264}=\dfrac{0.9\times 2.4}{T_2}\\\\T_2=264[/tex]

Answer:

7. isotonic

8. hypertonic

9. hypotonic

10. isotonic

11. hypotonic

12. hypertonic

Answer:online research

Explanation: