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2 years ago

What are the 4 parts of cell theory???? List like 1. 2. 3. 4.

Chemistry

1 answer:

pishuonlain [190]2 years ago

5 0

Answer:

1. Cells contain DNA that is passed cell to cell during cell divison.

2. Cells are similiar in chemical composition and reactions that maintin homeostasis.

3. All basic chemical and physiological functions are carried out inside the cell.

4. Cell activity depends on the oragnelles withen the cell.

Hope this helps!

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Psychologist work with "neurotics" more than psychotics. A-True B-False

dexar [7]

It would be FALSE!!!

3 0

2 years ago

Which of the following changes will always be true for a spontaneous reaction? (3 points)

Alika [10]

Answer is: - delta G.
The change in Gibbs free energy (ΔG), at constant temperature and pressure, is: ΔG=ΔH−TΔS.
ΔH is the change in enthalpy.
ΔS is change in entropy.
T is temperature of the system.
When ΔG is negative, a reaction (occurs without the addition of external energy) will be spontaneous (exergonic).

3 0

2 years ago

Which type of reaction occurs in the following equation?

Tema [17]

The type of reaction which occurs is referred to as redox reaction. This kind of reaction involve both oxidation and reduction.
Al(s) is oxidized to alluminium ions, while cu2+ is reduced copper metal.Reduction occurs at the cathode while oxidation occurs at the anode.

3 0

2 years ago

Read 2 more answers

Arrange the elements in decreasing order of first ionization energy.

just olya [345]

Answer:

The decreasing order of first ionization energy: Se > Ge > In > Cs

The decreasing order of first ionization energy: x > y > z

Explanation:

Ionization energy refers to the energy needed to completely pull out an electron from the valence shell of a neutral gaseous atom.

First ionization energy is the energy involved in the removal of first valence electron.

In the periodic table, down the group, as atomic radius of elements increases, the ionization energy decreases

Whereas, across a period, as atomic radius of elements decreases, the ionization energy increases.

PART (A):

Position of the given elements in the periodic table:

Indium (In): Group 13, period 5

Germanium (Ge): Group 14, period 4

Selenium (Se): Group 16, period 4

Caesium (Cs): Group 1, period 6

Thus, the increasing order of atomic radius: Se < Ge < In < Cs

Therefore, the decreasing order of first ionization energy: Se > Ge > In > Cs

PART (B):

Given elements:

element x: radius = 110 pm

element y: radius = 199 pm

element z: radius = 257 pm

Thus, the increasing order of atomic radius: x < y < z

Therefore, the decreasing order of first ionization energy: x > y > z

5 0

2 years ago

If an iron nail was placed in the copper sulfate solution, would you see a

EleoNora [17]

Answer:

Iron displaces copper ions

Explanation:

which means that iron in more reactive than copper.

(Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

8 0

1 year ago