0 Balance the following equation: CO2 (g) + H2O (1) → C12H24012 (s) + O2 (g) +​

Answer:

Groups 14, 15, and 16 have 2,3, and 4 electrons in the p sublevel (p sublevel has 3 "spaces" AKA orbitals), because Hunds says one in each orbital before doubling up if you had 2 electrons, group 14, they would both be in the first orbital, with 3 electrons, group 15, two in the first orbital one in the 2nd none in the 3rd. With 4 electrons, group 16, then you would have 2 in the first 2 orbitals and NONE in the 3rd.

Explanation:

If you are in group 13 you only have 1 electron so it can only be in one orbital. with group 17, you have 5 electrons, so 2 in the first 2 in the second and 1 in the 3rd, correct for Hunds rule anyway. Noble gasses, group 18, have 6 elecctrons, so every orbital is full any way you look at it.

Answer:

Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecul

Explanation:

Answer:

I did this but I dont remember

Explanation:

kk

Answer:

Alpha decay

Explanation:

That's the definition of alpha decay

Alpha decay would be an alpha product when released from an isotope. A further explanation is below.

Thus the above alternative is right.

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Answer:

That false they are solids so they don't pack

And i love the movie sci-ki the anime series

The statement "When air is dense, its molecules are packed tightly together" is true.

Air is a mixture of gases. Air is present in the atmosphere and everywhere except in a vacuum. Air is made up of different types of gases. It is necessary for life because it helps in breathing.

The air is also made up of atoms. The atoms are present in different places according to the temperature and pressure of the atmosphere. The atoms come closer when the temperature is low.

This is called density. The atoms become dense when the temperature is low, the molecules become packed tightly together. The air converts into water molecules or the air freezes. When the temperature becomes high, the molecules go far away from each other, which makes it less dense.

Thus, the statement is true.

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Answer:

I think the answer is period 7

Explanation:

The period in periodic table, in which no stable ions of elements exists is 7th period. They contains actinides.

Actinides are 7th period elements classified to F block of periodic table. A periodic table contains vertical columns called groups and horizontal rows called periods.  Each elements are classified into suitable groups based on their similarity in properties with other group elements.

There are four blocks in periodic table which are s, p, d and f block. S block elements are metals and d block contains transition metals and p block have non metals including gases and metalloids.

Actinides are f- block metals. All the elements in the period are radioactive. That's why they don't have a stable isotope or ion. They continuously undergo radioactive decay by the emission of charged particles.

Hence, the period containing unstable elements is 7th one.

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Answer:

B. 13 electrons

Explanation:

Bcoz protons are the same with electrons and the neutrons too.

Answer:

Explanation:chlorine

i think that the answer is D

Answer:

maybe "A" but I'm not sure

Light can be treated like a particle becuase it comes in chunks of energy called photons.

Light exists in dual form, as wave and particle. Light can exist as a wave becuase it transfer energy from one point to another.

Light can also exist as particle becuase it consists of packs of energy known photons.

Thus, we can conclude that, light can be treated like a particle becuase it comes in chunks of energy called photons.

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Answer:

neon gas is the closest noble gas to magnesium ( mg ) on the periodic table.

Explanation:

hope this answer will help you

Answer:

A. Solids can only change shape if forced to make a change

Explanation:

A solid substance is one of the states of matter.

Matter is anything that has weight and occupies a definite space.

There are three states of matter commonly known: solids, liquids and gases.

Answer:

270g

Explanation:

Given parameters:

Concentration of solution = 1.5M

Volume of solution  = 4.5L

Unknown:

Mass of NaOH added  = ?

Solution:

Concentration is the number of moles of solute found in a solution.

 To solve this problem, we need to find the number of moles of NaOH first;

 Number of moles  = concentration x volume

 Number of moles  = 1.5 x 4.5  = 6.75moles

 Now, to find the mass of NaOH;

  Mass of NaOH = number of moles x molar mass

       Molar mass of NaOH  = 23 + 16 + 1  = 40g

 Mass of NaOH  = 6.75 x 40  = 270g

Answer:

Violet light has the highest energy, and red light has the longest wavelength

Explanation:

The correct answer would be that violet light has the highest energy, and red light has the longest wavelength.

Among the visible light rays, red has the shortest wavelength while violet has the longest. There is an inverse relationship between the energy and the wavelength of a wave. Hence, red light with the longest wavelength would have the lowest energy while violet light with the shortest wavelength would have the highest energy.

Answer:

D) 0.9 L

Explanation:

At constant temperature,

PV = Constant

so,

P1.V1 = P2. V2

101 × 2.1 = 235 × V2

V2 = 0.9 L

Answer:

0.9L

Explanation:

Given parameters:

Initial volume = 2.1L

Initial pressure  = 101kPa

Final pressure  = 235kPa

Unknown:

Final volume  = ?

Solution:

The relationship is between pressure and volume. To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

        P₁V₁  = P₂V₂

P₁ is the initial pressure

V₁ is the initial volume

P₂ is the final pressure

V₂ is the final volume

 Now insert the parameters and solve;

        2.1 x 100 = 235 x V₂

            V₂ = 0.89L

Answer:

T-A-A-C-G-A or just TAACGA

Explanation:

A=T

G=C

C=G

T=A

This is the answer key to all complementary DNA strands.

Hope this helps you out.

Answer:

7.07585×10^24 molecules

Explanation:

# of Moles X Avogadro's Number= # of  Molecules

According to the concept of Avogadro's number, there are 7.075×10²⁴ molecules in 11.75 moles of water.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number. Number of molecules is calculated as:number of moles×Avogadro's number

∴number of molecules= 11.75×6.022×10²³=7.075×10²⁴ molecules.

Thus, there are 7.075×10²⁴ molecules in 11.75 moles of water .

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Answer:

directly proportional to one another

Explanation:

Volatility refers to how quickly a substance changes from liquid to gas.

If a substance has a high vapour pressure, the substance is highly volatile. Similarly, if a substance has a low vapour pressure, then the substance is much less volatile.

This implies that volatility and vapour pressure gives a direct proportionality.

Answer:

Answer:

Water would not be able to transport nutrients -‐-‐ in plants, or in our bodies -‐-‐ nor to dissolve and transport waste products out of our bodies. ... Cohesiveness, adhesiveness, and surface tension: would decrease because without the +/-‐ polarity, water would not form hydrogen bonds between H20 molecules.

Answer:

The distance covered when speedwalking for 10 minutes based on the 8 meters trial (assuming a speed of 1 m/s) is 600 meters.

Explanation:

The speed of a body is the distance it covers per unit time when it travels. Its formula is given as; speed = distance/time. Its unit is meters per second as distance is measured in meters while time is measured in seconds.

From this formula, the distance covered by a body travelling with a given speed over a specific time can be determined. Distance = speed × time. This formula applies generally in all cases given the speed of the body and the time it travels.

Speed walking means walking as fast as possible without jogging or running. In this experiment, the speed over the 8 meters trial is not given. However, some assumptions can be made.

Assuming the speed while speedwalking is 1 meters per second; time taken = 10 mins or 10 × 60 seconds = 600 seconds. Distance covered = 1 m/s × 600 s = 600 m

Therefore, the distance covered when speedwalking for 10 minutes based on the 8 meters trial (assuming a speed of 1 m/s) is 600 meters.

Answer:

conflict among characters

Explanation:

Answer:

Conflicting among characters

Explanation:

Answer:

Iridium and osmium have the highest densities.