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
MA_775_DIABLO [31]
3 years ago
11

All the elements of a family in the periodic table have what feature in common?a)they all have similar chemical properties.b)the

y all have the same number of protons in the nucleus.c)they are all located in the same horizontal row or period.d)they all have the same number of electrons in the electron cloud.
Chemistry
2 answers:
Studentka2010 [4]3 years ago
8 0

A) They all have similar chemical properties.


Vadim26 [7]3 years ago
5 0
<span>Answer: D. They all have the same number of electrons in the electron cloud</span>
You might be interested in
What is the greenhouse effect?
Vladimir [108]

Answer:

Answer:

C

Explanation:

Greenhouse gases allow for sunlight, and the heat radiation to enter the atmosphere, and then prevent it from exiting the atmosphere. Known as the greenhouse effect.

Explanation:

4 0
2 years ago
Read 2 more answers
Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. the nacl so
stira [4]
1)

<span>m(NaCl) = 1.95 g
V(H2O) = 250mL
M(NaCl) = </span><span>58.5 g/mole

Since waters density value is 1g/mL, it can be assumed that volume and mass of water are same values:

</span>V(H2O) = 250ml = 250g = 0.25 kg<span>

</span><span>molality of NaCl:
</span><span>
n(NaCl)=m/M=1.95/58.5= 0.033 mole

</span>molality b(NaCl)=n(NaCl) / V (H2O)= 0.033/0.25 = 0.132 mol/kg
<span>
milimolality of NaOH = 0.132/0,001 = 132 mmole/kg
</span>
milliosmolality of NaOH = milimolality x N of ions formed in dissociation

Since NaCl dissociates into 2 ions in solution:
<span>                                        
</span>milliosmolality of NaOH = 132 x 2 = 264  osmol<span>es/kg
</span>
2)

m(gl) = 9 g
V(H2O) = 250mL
M(NaCl) = 180 g/mole

Since waters density value is 1g/mL, it can be assumed that volume and mass of water are same values:

V(H2O) = 250ml = 250g = 0.25 kg

molality of glucose:

n(gl)=m/M=9/180= 0.05 mole

molality b(gl)=n(gl) / V (H2O)= 0.05/0.25 = 0.2 mol/kg

milimolality of glucose = 0.132/0,001 = 200 mmole/kg

milliosmolality of glucose = milimolality x N of ions formed in dissociation

Since glucose does not dissociate, milimolality and milliosmolality are same:
                                        
milliosmolality of glucose = 200 osmoles/kg

3)

The osmosis represents the diffusion of solvent molecules through a semi-permeable membrane that allows passage solvent molecules but does not to the dissolved substance molecule. The osmosis occurs when the concentrations of the solution on both sides of the membrane are different. Since the semi-permeable membrane only permeates the solvent molecules, but not the particles of the dissolved substance, it occurs the solvent diffusion through the membrane, i.e. the solvent molecules pass through the membrane to equalize the concentration on both sides of the membrane. Solvents molecules move from the middle with a lower concentration in the middle with a higher concentration of dissolved substances.

In our case, osmosis will occur because the concentration of NaCl solution and the concentration of glucose solution do not have same values. Osmosis will occur in the direction of glucose solution because it has a lower concentration.

3 0
3 years ago
The energy of moving atoms is
balandron [24]

The answer is Thermal Energy :)

4 0
3 years ago
Read 2 more answers
Based on what you’ve determined regarding one mole of sand and one mole of water, which statements must be correct? Select all t
Igoryamba

Answer:

-The mole is appropriate only for counting things that are very small.

-One mole is a very large number of something.

-A molecule of water is much smaller than a grain of sand.

Explanation:

8 0
2 years ago
How many sulfur atoms are there in 3.90 mol of sulfur?
Ilya [14]
 <span>In a mole of anything, there are 6.023 x 10^23 units. So, in 3.9 moles of sulfur, there are 3.9 * 6.023 x 10^23 = 23 x 10^23 = 2.3 x 10^24 atoms (keeping only 2 sig figs).  Hope I help!!
</span>
6 0
3 years ago
Other questions:
  • When dissolved in water, hydrogen bromide (hbr) forms hydrobromic acid. determine the hydroxide ion concentration in a 4,500 ml
    5·1 answer
  • suppose you mix two colorless liquids together and a green solid settles to the bottom of the container. explain why you might b
    7·1 answer
  • Which phase change has more kinetic energy:boiling or melting?
    14·1 answer
  • Which of these is a physical property?
    11·2 answers
  • Which of the following reactions involves two or more substances combining to form a new compound?
    9·1 answer
  • Which one is it? Please? ​
    11·2 answers
  • What happens to energy and temperature when molecules collide
    10·1 answer
  • Which of the following is NOT one of the three main global climate zones?
    12·1 answer
  • I FORGOT HOW TO SHOW THE SLIDE BUT -Yosef is so intrigued by what he sees in his microscope that he walks to a nearby pond and c
    13·1 answer
  • In an endothermic reaction, what happens to the surroundings?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!