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
exis [7]
2 years ago
6

Can someone help me please

Chemistry
2 answers:
Irina18 [472]2 years ago
7 0
True
Hope I helped you
borishaifa [10]2 years ago
7 0

only wave A you have given ....wave B ?

You might be interested in
Which components of a galaxy move in circular patterns or revolve around a star?
Novosadov [1.4K]

Answer:

B

Explanation: hoped this helped!!!

8 0
2 years ago
Please help I need a answer to both
irga5000 [103]

Hi , I’m really sorry because I just have the first question... so here it is :

So it is 0.52 mol .

Have a nice day .

3 0
2 years ago
What is the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65% oxygen?
aliya0001 [1]
Li2CO3 ; variance= 1.26x10^-3
8 0
3 years ago
Which of these is a ball and stick model?
Tanzania [10]

Answer:

say she in love with me say she just want compuny].

Explanation:

7 0
3 years ago
Read 2 more answers
How to find how many electrons are in an element
Murljashka [212]

Explanation:

1) Locate the atomic number in the upper left corner of the square. The atomic number will tell you the number of protons

2) In a neutral state, the element will contain the same number of protons as it will electrons.

--> Boron (B) has an atomic number of 5, so it has 5 protons.

--> Having 5 protons (+1 charge each) means to be balanced, it must have 5 electrons (-1 charge each)

However, what if it's not in a neutral state?

If it's not in a neutral state, it will look something like this:

Ca ^ 2+

<em>Btw, the "^" means that it will be written like it's an exponent. That confuses people sometimes.</em>

Anyways, the "2+" means it's an ion with a positive charge of 2. For us to have a positive charge, it means it's lost two electrons (cause electrons are negative, so taking them away means we are left with a more positive charge).

To get the number of remaining electrons, subtract the 2 from the atomic mass. In this case, that would be 20.

20 - 2 = 18 electrons

Another example:

N ^3-

Atomic Number: 7

7 + 3 = 10 electrons.

Why did I add here instead of subtracting? It's cause the 3- means we have added electrons, resulting in the ion having a negative charge. It's got more electrons than usual.

Hopefully this helps a bit.

5 0
3 years ago
Other questions:
  • A liter is the same as a _____.
    11·2 answers
  • Need help with chemistry question
    5·1 answer
  • What is the formula for 2-methylnonane
    13·1 answer
  • Which is NOT an agent of chemical weathering?
    9·1 answer
  • How many valence electrons does this atom have? (Urgent plz help)
    12·1 answer
  • B) Sodium + Oxygen Sodium Oxide + Type of Reaction :
    7·1 answer
  • Consider the reaction Mg₂Si(s) + 4 H₂O(ℓ) → 2 Mg(OH)₂(aq) + SiH₄(g). How many grams of silane gas (SiH₄) are formed if 25.0 g of
    6·1 answer
  • PLEASEEE HELP ?!?!?!
    6·2 answers
  • Volcanic island acres are associated with which type of plate boundary
    13·1 answer
  • State charles's law. If a balloon occupies 885 cm3 volume at 20°C and 794 cm3 at - 10°C , prove that this is according to charle
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!