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
Zinaida [17]
2 years ago
9

Someone who knows how to do this please help me!!!!!

Chemistry
1 answer:
Sindrei [870]2 years ago
5 0
It may just be my internet but the picture is just white. maybe try reposting this..?
You might be interested in
Which direction does air circulate into low pressure zones in the northern and southern hemisphere
Yuri [45]
<span>Now consider a low pressure area on a disk as shown below.A parcel of air at point A would move toward the center of the low pressure area. That movement would take it farther away from the center of the disk and therefore it would move to the west. A parcel of air at B would move toward the center of the low pressure area which would also take it closer to the center of the spinning disk where its speed is greater than the surrounding points. It would appear to move to the east. With A moving to the west and B moving to the east the line from A to B is rotating counterclockwise.</span>
5 0
3 years ago
Read 2 more answers
What mass of compound must be weighed out to have a 0.0223 mol sample of H2C2O4 (M=90.04 g/mol)?
rodikova [14]
Mass of  H2C2O4 :

mm = 90.04 g/mol

number of moles : 0.0223 moles

m = n * mm

m = 0.0223 * 90.04

m = 2.007 g 

hope this helps!.

5 0
3 years ago
Snow melting is a physical change. True False
S_A_V [24]

Answer:

false

Explanation:

4 0
3 years ago
Read 2 more answers
Arrange the following atoms in order of increasing first ionization energy: He, Be, Se, Ne
Alex17521 [72]

Answer:

Be (899 kj/mol) , Se (940.9 kj/mol), Ne(2081 kj/mol), He (2370 kj/mol),

Explanation:

For noble gases as they have complete octet so they require high amount of energy to remove the electron.

Trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.

Trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

8 0
3 years ago
As the temperature is increased how does the substance move?
Karo-lina-s [1.5K]

Answer:

The movement of substances may occur across a semi‐permeable membrane (such as the plasma membrane). A semi‐permeable membrane allows some substances to pass through, but not others.

Explanation:

6 0
3 years ago
Other questions:
  • What does tectonic activity refer to
    14·1 answer
  • An atom of which element has the greatest attraction for the electrons in a bond with a hydrogen atom?
    13·1 answer
  • Convert each of the potentials. The silver–silver chloride and calomel reference electrodes are saturated with KCl,KCl, resultin
    9·1 answer
  • For the reaction 2 HCl + Ca ( OH ) 2 ⟶ CaCl 2 + 2 H 2 O how many grams of calcium hydroxide, Ca(OH)2, are needed to react comple
    6·1 answer
  • The alkanes are a homologous series of compounds containing only carbon and hydrogen that have the general formula <img src="htt
    11·1 answer
  • Which of the following is the fundamental element found in all living organisms? A-iron B-carbon C-calcium D-magnesium
    12·2 answers
  • Please help due tomorrow
    5·1 answer
  • 4.
    5·2 answers
  • Atoms have a neutral charge because they?
    5·1 answer
  • When electrical ___ betweens protons is greater than strong forces, the nucleus will be unstable.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!