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
Alexus [3.1K]
3 years ago
9

Please help guys!!! Points + Brainliest

Mathematics
2 answers:
Bas_tet [7]3 years ago
8 0
Protons and electrons are 12. For neutrons, there are 12 of them. 
<span>Magnesium has an </span>atomic number<span> of 12, which means there are 12 protons.
You subtract the atomic number from the mass number in order to find neutrons.
</span>Atomic mass is 24. 24-12=12
Electrons always match the number of protons.
Ipatiy [6.2K]3 years ago
5 0

Answer:

Part 2:

There are 19 protons in the element K, you can tell because of the number 19 above the elements abbreviation. There are also 19 electrons in this element, you can tell because the number of protons is the same number of electrons. Last, to find the number of neutrons an atom possesses, you have to round the atomic mass ( 39.089 to 39 ). Then you take your Mass number ( 39 ) and subtract it from your number of protons (19). 39 - 19 = 29, there are 29 neutrons in the element K.

Hope that this helps! :)

Also if you need part 1 :)

Part 1:

The two-element that has the same properties as Magnesium are Calcium (Ca) and Strontium (Sr). These three elements are all Alkaline earth metals, they are not as reactive as Alkali metals but they are too reactive to be found in nature.

You might be interested in
Need help Will give you the brainliest
marshall27 [118]

Answer:

The missing area for both sides is 48ft²

the missing dimension is 12ft

Step-by-step explanation:

Add all the areas up

12+36+12+36=96

192-96=96

96÷2=48

48÷4=12

5 0
3 years ago
Convert the decimal to a fraction in simplest form. 0.25 =
Yuliya22 [10]
The answer in simplest form is 1/4.
4 0
3 years ago
Read 2 more answers
Help asap!!!!!!!!!!<br><br> Properties of exponents <br><br> Simplify
maksim [4K]

Answer:

C) 4a^{6}b

Step-by-step explanation:

\frac{(4b^{3} 3a^{4}b^{2})}{3a^{-2} b^{4}} Copy the original equation

\frac{12a^{6}b^{5}}{3b^{4} } Combine like terms

\frac{12a^{6}b}{3} Simplify the b, then divide by 3

4a^{6}b

If this answer is correct, please make me Brainliest!

4 0
3 years ago
What the answer I don’t know it
meriva
The answer is B since a negative number being subtracted cancels out and becomes a number, for example: since its -(-3) it becomes positive.
5 0
3 years ago
Read 2 more answers
It takes 41 minutes for 9 people to paint 9 walls. How many minutes does it take 14 people to paint 14 walls?
VikaD [51]
If each person is painting their own wall that means that it takes each person 41 minutes to paint their wall. That means it would take 41 minutes for 14 people to paint 14 walls.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equivalent expression for 4(3a+7)+3 (2a+5) if a=5, is the the solution to both expressions the same
    12·1 answer
  • Write an expression for the model. Find the sum.
    8·1 answer
  • Thomas buys a case of water. A case contains 36 bottles of water and costs $4.69. Thomas will sell each bottle of water for $0.7
    13·1 answer
  • Write the opposite of -1/2 explain
    7·1 answer
  • Write a whole number and a fracción greater than 1 to name the para filled.think.1 container= 1
    9·1 answer
  • Carlos saved 12 dollars last week and 24 this week time as much as he saved last week
    13·1 answer
  • A fair die is tossed once, what is the probability of obtaining neither 5 nor 2?​
    5·1 answer
  • The sum of 2 numbers is 100. Twice the first number plus twice the second number is 200. What are the numbers?
    13·2 answers
  • HELPP PLZZ
    9·1 answer
  • Can you crack the code? question in attached file.​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!