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
Lesechka [4]
3 years ago
9

The element beryllium (Be, atomic number 4 and atomic mass 9) is right above magnesium (Mg, atomic number 12 and atomic mass 24)

in the periodic table. How many more electrons does magnesium have than beryllium?
Chemistry
2 answers:
tia_tia [17]3 years ago
7 0

the answer is 8 electrons

belka [17]3 years ago
5 0

The answer is 8 electrons

You might be interested in
Calcium (Ca) and oxygen (O) combine to form an ionic compound. Which best describes the electron dot formula for this compound
Blizzard [7]
CaO because oxygen have 2 dots and calcium as well
(oxygen valency -2
calcium valncy +2)= CaO
3 0
2 years ago
Which one is NOT part of the cell theory?
worty [1.4K]

<u>Answer:</u>

All living things are not made of cells.

5 0
2 years ago
A graduated cylinder was filled with 25.0 mL of water. A solid object was immersed in the cylinder, raising the water level to 3
yawa3891 [41]

Answer:

Density of the object is 8759.494 grams/L

Explanation:

As we know density of an object is mass of the object divided by its volume

Given

Volume of the object is equal to the change in volume of water with in the cylinder when the object was immersed in water.

Hence, volume of object is equal to

32.9 -25 = 7.9 mL

Mass of the object is 69.2 grams

Density

= \frac{69.2}{7.9 *10^{-3}}\\= 8759.494 grams/L

Density of the object is 8759.494 grams/L

7 0
3 years ago
Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?<br> A,B,C,or D?
ad-work [718]

Answer:

B

Explanation:

5 0
2 years ago
Methylamine (ch3nh2) is a weak base. at equilibrium, which expression equals the base dissociation constant (kb) of methylamine?
Molodets [167]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Below are the choices that can be found elsewhere:

a. [CH3NH-] * [OH-] / [CH3NH3+] 
<span>b. [CH3NH3+] / ([CH3NH2] * [OH-]) </span>
<span>c. [CH3NH3+] * [OH-] / [CH3NH2] </span>
<span>d. [CH3NH3+] * [OH-] / [CH3NH2] * [H2O] 
</span>
The answer is C. 
4 0
3 years ago
Other questions:
  • Ethanol, CH.0, is common beverage alcohol. At its boiling point of 78.5 °C, the enthalpy of vaporization of ethanol is 38.6 kJ/m
    8·1 answer
  • Which has the lowest freezing point?
    13·1 answer
  • Calcium is found in your bones. This is an example of a mineral being used for ________ purposes.
    13·2 answers
  • Which of the following is not a common use of gypsum? a. wallboard/drywall for homes b. a primary ingredient for toothpaste c. s
    8·1 answer
  • A scientific theory is _____.What have chemists done to help people conserve energy?
    7·1 answer
  • True or False: Cohesion is the attraction between particles of the same<br> substance
    11·1 answer
  • What do electric forces do​
    15·1 answer
  • An element with 3 valence electrons would be a
    9·1 answer
  • How was each element's atomic number determined?
    14·2 answers
  • 13. List the following ions in order of increasing radius: Li+, Mg2+, Br"
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!