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
Bess [88]
3 years ago
13

Mm, does anyone know this?

Chemistry
1 answer:
adelina 88 [10]3 years ago
8 0
I think it’s Be, Mg, Ca, Sr because they are all alkaline earth metals
You might be interested in
Need help balancing these ​
kari74 [83]
The answer would be 1,3,1,3
3 0
2 years ago
Read 2 more answers
How much of a sample remains after three half-lives have occurred? 1/16 of the original sample 1/9 of the original sample 1/8 of
Drupady [299]
For this question, assume that you have 1 compound. This compound is divided in half once, so you are left with 0.5. That 0.5 that remains is divided in half again, this is the second half-life, and you are left with 0.25. The final half life involves dividing 0.25 in half, which means you are left with 0.125. For the answer to make sense, you need to know your conversions between decimals and fractions. To make it simple, if you have 0.125 and you times it by 8, you are left with your initial value of 1. Therefore, after three half-lives, you are left with 1/8th of the compound.
5 0
3 years ago
Read 2 more answers
Water is called compound why?​
qaws [65]

Answer: because it consists of more than one element, which are hydrogen and oxygen in a covalent bond.

5 0
2 years ago
Read 2 more answers
How can i find the number of neutrons in an element ​
lawyer [7]

Answer:

The mass number is the sum of protons and neutrons. This means to find the number of neutrons you subtract the number of protons from the mass number. On the periodic table, the atomic number is the number of protons, and the atomic mass is the mass number.

Explanation:

7 0
3 years ago
Read 2 more answers
How to tell if a compound is ionic or molecular?
zhenek [66]
<span>When naming compounds, the first thing you need to do is decide if the compound is ionic or molecular. *Ionic compounds will contain both metals and non-metals, or at least one polyatomic ion. *Acids will always include the (aq) symbol beside the formula, and the name will include the word acid.</span>
5 0
3 years ago
Other questions:
  • If the flask has a volume of 0.25 l , what is the minimum mass of ph3bcl3(s) that must be added to the flask to achieve equilibr
    9·1 answer
  • How many liters of 0.85 M HCI solution would react completely with 3.5 moles Ca (OH)2?
    5·1 answer
  • Please help ASAP!!!
    12·2 answers
  • How many molecules of ethane ( C2H6) are present in 0.197g of C2H6?
    9·1 answer
  • Calculate the enthalpy of the reaction
    14·1 answer
  • Describe the electronic structure of halogen how it changeS down the group
    11·1 answer
  • Which is a substance that could be found in air , water , or soil that is harmful to humans or animals?
    8·2 answers
  • Which phrase describes air density?
    13·2 answers
  • The density (mass/volume) of aluminum is 2.70 times. 103 kilograms per cubic meter (kg/m3). what is the mass of an aluminum cyli
    8·1 answer
  • Which of the following best describes how an ionic compound dissolves in water?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!