1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill [66]
2 years ago
9

What does the cell theory state? Answer F All organisms are composed of a nucleus G All prokaryotes are composed of multiple cel

ls H All prokaryotes are single celled organisms J All organisms are composed of cells
Chemistry
1 answer:
Sav [38]2 years ago
3 0

Answer:

(J) All organisms are composed of cells

You might be interested in
How many moles of oxygen will occupy a volume of 2.50 liters?
loris [4]
Data:
n (number of mols) = ? 
V (volume) = 2.50 Liters 
If: 
1 L → 1000 g
2.50 L → y

y = 1000*2.50 = 2500 g

Therefore:
m (mass) = 2500 g

Now:
Molar Mass (MM) of oxygen = 16 g/mol

Formula:
n =  \frac{m}{MM}

Solving:
n = \frac{m}{MM}
n = \frac{2500\:\diagup\!\!\!\!\!g}{16\:\diagup\!\!\!\!\!g/mol}
\boxed{\boxed{n = 156.25\:mols}}\end{array}}\qquad\quad\checkmark




7 0
2 years ago
1. When two atoms with different electronegativities are bonded together, a bond dipole exists. These are displayed with an arro
Natali5045456 [20]

Answer:

In order: LOWER, HIGHER, NEGATIVE, POSITIVE, INCREASE

Explanation:

First you must consider the definition of electronegativity.

All in all, electronegativity is the ability of an atom to attract electrons to itself. For this explanation, let's just consider the groups 1, 2, 13-17, and the noble gases of the periodic table. Furthermore, let's also consider the octet rule. The octet rule says that the last orbit of an atom tends to have 8 electrons in order to be stable.

If you take an atom like Sodium (Na) and search its distribution of electrons by levels, you'll see these number in the last two orbits: 8.1

The penultimate orbit has 8 electrons and the last one has only 1. Therefore, in order to futfill the octet rule what do you think it's easier? Losing the last electron and leaving the 8 electrones of the penultimate orbit as last orbit? Or maybe taking 7 electrons for the last orbit and, hence, futfilling the octet? Well, the answer is the first case.

The more you move from group to group (i.e, rightwards in the periodic table), more electrons will have in their last orbit.

So, in order to respond your question: Yes you should display it like this:

A --> B

Consider A and B two random atoms, for which B's electronegativity is higher than A's. This arrow shows the tendency of the electron flow.

As electrons go to the more electronegative atom, the whole electronic ''cloud'' will tend to be closer to B, because this atom is more electronegative. Hence, there will be a partial (not fixed) negative charge on B rather than on A. This is due to B's high electronegativity. This means that the negative charge will spend more time on B rather than on A, this is what partial negative charge means.

The higher the electronegativity is, the higher the magnitudes of the partial charges --> Therefore, these partial charges are increased and sometimes it might lead to the chemical bond breakage.

8 0
3 years ago
Does anyone have the student exploration sheet answers for the Drug Dosage (Forensic Science) Gizmos lab?​
Novay_Z [31]

Answer:

sorry neither me ..........

8 0
3 years ago
When water decomposes into oxygen and hydrogen, the mass
Maurinko [17]
<span>When water decomposes into oxygen and hydrogen, the mass "Remains Constant" as according to Law of Conservation of mass, mass can neither be created not destroyed,.

In short, Your Answer would be Option A

Hope this helps!</span>
8 0
3 years ago
What was the purpose of the periodic table?
andre [41]

Answer:

A

Explanation:

The purpose of the periodic table was to organize elements as they were discovered into periods and groups, according to their properties. It was not just a naming of elements, as a list.

4 0
3 years ago
Other questions:
  • To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated
    6·1 answer
  • When must scientist conduct controlled experiments ?
    13·1 answer
  • The diameter of a hydrogen atom is approximately 1.06 ✕ 10−10 m, as defined by the diameter of the spherical electron cloud arou
    13·1 answer
  • Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding?
    13·2 answers
  • mass of 6.584 g. After it is heated, it has a mass of 4.194 g. What is the percentage by mass of water in the hydrate?
    13·1 answer
  • Which is the following summaries expresses the main points of the best passages
    6·2 answers
  • Atoms that make up a compound are bonded together; they cannot be separated by
    7·2 answers
  • Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. Th
    5·1 answer
  • How are heat, temperature, and thermal energy related?​
    5·1 answer
  • The melting point of the sample is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!