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
Dennis_Churaev [7]
3 years ago
13

On which energy level are the valence electrons for calcium (Ca) ?

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
7 0
The fourth (last) one in 2-8-8-2.
You might be interested in
Single and double replacement
MrMuchimi

Answer:

Explanation:

A single replacement or single displacement reaction is a reaction in which one substance replaces another.

            A  +   BC →   AC + B

The replacement of an ion in solution by a metal higher in the activity series is a special example of this reaction type.

The relative positions of the elements in the activity series provides the driving force for single displacement reactions.

A double replacement reaction is one in which there is an actual exchange of partners between reacting species. This reaction is more common between ionic substances;

              AB + CD → AC + BD

Such reactions are usually driven by;

  • formation of precipitation
  • formation of water and a gaseous product
3 0
3 years ago
How many grams of Al(OH)3 are produced from 3.00 g of AlCl3 with excess of NaOH?
Blizzard [7]

Answer:

1.772 gram is the approximate answer

Explanation:

molecular mass of AlCl3 is 132 g per mole and of Al(OH)3 is 78 g per mole

the reaction is

AlCl3 + 3 NaOH ---> Al(OH)3 + 3 NaCl

from the reaction it is clear that 1 mole AlCl3 makes 1 mole Al(OH)3

implies 132g AlCl3 gives 78g Al(OH)3

Implies 3g AlCl3 gives

3*122/78 = 1.772 grams

3 0
3 years ago
Name the following compound:
igomit [66]

Answer:

3,5-dimethyl-2-octene

Explanation:

When naming an organic molecule with a double bond, the chain has to include the double bond.  This means that there are 8 carbon atoms on the central chain.  The molecule is octene.  The double bond is after the second carbon, making it 2-octene.  You can't say that its 6-octene because you want to have the smallest number possible in front.

The molecules attached are two methyl groups.  Since you have two methyl groups, the name will be dimethyl.  Start counting from the side closest to the double bond.  This gives you a 3, 5-dimethyl group.

5 0
4 years ago
"Which statement is true about the removal of a terminal phosphate" from ATP? Choose one: A. The reaction is associated with a p
Mamont248 [21]

Answer:

C. The reaction is energetically favorable.

Explanation:

The reaction which shows the removal of the terminal phosphate from the ATP is shown below:

ATP+H_2O\rightarrow ADP+P_i+\ energy

The Gibbs' free energy change of this reaction, \Delta G^0=-7.3\ kcal/mol

Hence, Option A is not correct.

It is a type of hydrolysis reaction in which water is being added to the molecule.

Hence, Option B is not correct.

The Gibbs' free energy change is negative which means that the reaction is energetically favorable.

Option C is correct.

6 0
4 years ago
What happens to the molecules within a gas when the gas condenses
kifflom [539]

When gas molecules condenses, they lose energy.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What replaced the early pharmacists role in the production of medicine
    6·1 answer
  • Deciding that she was thirsty, Ms. Smith decided to mix up some lemonade using 2 tablespoons of lemonade, and 2 cups of water. W
    14·1 answer
  • The big bang theory is one of the most accepted theories on the origin of the universe because of scientific evidence, such as _
    7·1 answer
  • Reactions that affect the nucleus of an atom are called
    14·1 answer
  • On the locating the epicenter exploration what city was near the epicenter?
    9·1 answer
  • Read the Casestudy Conservation Planning and summarize it - 5 sentence minimum.
    8·1 answer
  • Help plz I have to get this done before 2:30 The diagram shows different forms of thermal energy transfer.
    9·2 answers
  • Please help!!! I’ll mark brainlist
    13·1 answer
  • A sample of gas has a volume of 400 liters when its temperature is 20.C and its pressure
    10·1 answer
  • Somone PLZZZ BELP ME asappp
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!