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
Nostrana [21]
3 years ago
5

the valence electrons of an atom of which element would feel a smaller effective nuclear charge than the valence electrons of a

calcium (ca) atom? a. magnesium (mg) b. potassium (k) c. scandium (sc) d. strontium (sr)
Chemistry
1 answer:
Dvinal [7]3 years ago
5 0
D. Strontium is the right answer
You might be interested in
What volume (mL) of concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of
zalisa [80]

❤Answer

<u>Volume </u><u>of</u><u> 106.9 mL from the concentrated solution should be taken and diluted to 350 </u><u>mL.</u>

⠀

⠀

<u>Main I'd On Indian Brainly Is - HeartCrush</u>

⚡ Explantion

<u>We can use the </u><u>formula.</u><u> </u>

c1v1 =c2v2

<u>Where c1 is the concentration and v1 is volume of the concentrated </u><u>solution.</u><u> </u>

c2 is the concentration

and v2 is the volume of the diluted solution to be prepared

9.00 M x V1 = 2.75 M x 350 mL

V1 = 106.9 mL

<u>Volume of 106.9 mL from the concentrated solution should be taken and diluted to 350 </u><u>mL</u><u>.</u>

3 0
2 years ago
Why do the inner walls of a vacuum flask have a silver coating?
Citrus2011 [14]

<u>Answer</u>:

The inner walls of a vacuum flask have a silver coating to reduce heat loss by radiation.

<u>Explanation</u>:

The vacuum flask has an inner silver lining to prevent the transfer of  heat by radiation. Radiation is a process where the emission or transformation of energy happens in the form of wave or the  particles through the material medium.

Vacuum flask being working as thermal insulator helps in maintaining the substance its actual temperature for a long time. The silver lining acts as a reflector .It  prevents the heat radiation to released out of the flask.  

5 0
3 years ago
Read 2 more answers
27 g of Al will react with how much mass of O2 to produce Al2O3
snow_tiger [21]
24g 4Al+3O2=2Al2O3
27g x(g)
108 96
X=24g
5 0
3 years ago
Jayden says that the dentist can shine a special light on his teeth that will make his teeth become whiter. Can light change Jay
arsen [322]

Answer:

No

Explanation:

This is because light cannot not whiten Jayden's teeth but light can change materials by hearing it up. There are some substances or tooth paste that can be use to whiten the teeth because of the content they are made off which whitens the teeth. Some of it include baking soda, hydrogen peroxide toothpaste, tumeric toothpaste, toothpaste that contain fluoride.

5 0
3 years ago
Describe the energetics of covalent and ionic bond formation and breakage?
Luda [366]

Answer:

The strength of a covalent bond is measured by its bond dissociation energy, that is, the amount of energy required to break that particular bond in a mole of molecules.  The enthalpy of a reaction can be estimated based on the energy input required to break bonds and the energy released when new bonds are formed.

Explanation:

8 0
3 years ago
Other questions:
  • What happens as a result of the kinetic energy of the particles in a liquid being comparable with the intermolecular attractions
    15·2 answers
  • What is the most common substance found in natural gas
    8·2 answers
  • Plz help me woth these 2 questions they r killing me!!!!!
    15·1 answer
  • Just need a letter so no that does not help
    13·1 answer
  • How many molecules of water are released during the polymerization of a 20 monomer-long cellulose molecule?
    11·1 answer
  • According to the atomists, the entire physical world was made of:
    9·1 answer
  • Helppppp with this pleasee
    9·1 answer
  • How can you improve the percent yield of copper in this lab? Check all possible strategies that will help you do so.
    12·2 answers
  • A 18.00 g g milk chocolate bar is found to contain 11.00 g g of sugar.1. How many milligrams of sugar does the milk chocolate ba
    14·1 answer
  • Why is much of the ocean floor so difficult to see?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!