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
SVEN [57.7K]
3 years ago
13

An unidentified element has four valence electrons. identify this atom.

Chemistry
2 answers:
Mice21 [21]3 years ago
7 0
The answer is lead. 
Every element in Group 14 (Group IVA) has four valence electrons, s^(2)p^(2)<span>.</span>
Evgesh-ka [11]3 years ago
5 0

Yeah it Lead!!!

Hope this helps!!!

You might be interested in
Which observation indicates that the kinetic-molecular theory has limited use for describing a certain gas? Gas particles are ac
soldier1979 [14.2K]

My answer to the question is "Gas particles are acting like tiny,solid spheres".

7 0
3 years ago
Read 2 more answers
Which statement correctly describes compounds?
vampirchik [111]

Answer:

A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means. A compound is not a pure substance because it is not an element, and only elements are pure substances.

6 0
3 years ago
How does water help us live
SSSSS [86.1K]

Your body uses water in all its cells, organs, and tissues to help regulate its temperature and maintain other bodily functions. Because your body loses water through breathing, sweating, and digestion, it's important to re-hydrate by drinking fluids and eating foods that contain water.

4 0
3 years ago
In the titration of wine to determine the acid concentration, 10.0 mL of wine was placed in a beaker and diluted with 40.0 mL of
BARSIC [14]

Answer:

0.0042 M is the molarity of tartaric acid in this sample of wine.

Explanation:

To calculate the concentration of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is tartaric acid

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH.

We are given:

n_1=2\\M_1=?\\V_1=10.0+40.0 mL=50.0 mL\\n_2=1\\M_2=0.051 M M\\V_2=8.20 mL

Putting values in above equation, we get:

2\times M_1\times 50.0 mL=1\times 0.051 M\times 8.20 mL

M_1=\frac{1\times 0.051 M\times 8.20 mL}{2\times 50.0 mL}=0.0042 M

0.0042 M is the molarity of tartaric acid in this sample of wine.

6 0
3 years ago
a wood board that is 5.1 cm x 10.2 x 243.8cm has a mass of 11.8kg will this board float in water? show all your proof
kolezko [41]
Your answer is in the image.

5 0
2 years ago
Other questions:
  • In a water solution, HCl and NaOH react to form H2O and NaCl. Radium-226 undergoes alpha decay to form radon-222. The temperatur
    6·2 answers
  • Which term describes the maintenance of a steady internal state in the body?
    6·1 answer
  • In a group of water molecules, where do hydrogen bonds form?
    6·2 answers
  • oth hydrogen sulfide (H2S) and ammonia (NH3) have strong, unpleasant odors. Which gas has the higher effusion rate? If you opene
    14·2 answers
  • Molecules tend to move from areas of ____ concentration to areas of _____ concentration.
    9·1 answer
  • Please help this is very important​
    14·1 answer
  • Which statement best explains why an object appears green in sunlight?
    10·1 answer
  • Analyze the following chemical combinations<br>a) MgO<br>b)CaCl2<br>c) Na2O​
    13·1 answer
  • Is Water a mixture or compound​
    10·1 answer
  • What volume of air is needed to burn completely 100cm of propane?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!