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
Blizzard [7]
3 years ago
5

Which element has a complete valence electron shell? selenium (Se) oxygen (O) fluorine (F) argon (Ar)

Chemistry
2 answers:
asambeis [7]3 years ago
5 0

Answer:

Argon (Ar)

Explanation:

kirill115 [55]3 years ago
3 0

Answer:

oxygen (O)

Explanation:

.

You might be interested in
When making an observation you should provide a general description of the subject rather than going into too much detail true o
vodka [1.7K]
In an observation in an experiment, you want to write down as much detail as possible. So the answer would be false.
8 0
2 years ago
Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100 cm3. What is the concentration of nitrate io
Soloha48 [4]

Answer : The correct option is, (b) 22.5 M

Explanation : Given,

Mass of calcium nitrate tetrahydrate = 266 g

Molar mass of calcium nitrate tetrahydrate  = 236.15 g/mole

Volume of solution = 100cm^3=100mL

Molarity : It is defined as the moles of solute present in one liter of solution.

Formula used :

Molarity=\frac{\text{Mass of calcium nitrate tetrahydrate }\times 1000}{\text{Molar mass of calcium nitrate tetrahydrate }\times \text{volume of solution in ml}}

Now put all the given values in this formula, we get:

Molarity=\frac{266g\times 1000}{236.15g/mole\times 100ml}=11.26mole/L=11.26M

As calcium nitrate tetrahydrate dissociate to give 1 mole of calcium ion, 2 moles of nitrate ion and 4 moles of water.

The concentration of nitrate ion = 2\times 11.26M=22.5M

Thus, the concentration of nitrate ion is, 22.5 M

4 0
3 years ago
What type of chemist studies how materials conduct electricity?
e-lub [12.9K]

Explanation:

The study of interaction between the chemical substances is known as chemistry and the person who does this study is called a chemical scientist. Everything around us is made up of matter and the interaction between this matters for one or different substances.

Conduits lead electrical flow in all respects effectively as a result of their free electrons. Separators restrict electrical flow and make poor transmitters. Some basic channels are copper, aluminium, gold, and silver. Some regular encasing are glass, air, plastic, elastic, and wood.

3 0
3 years ago
Read 2 more answers
Someone please help me I got a few minutes
HACTEHA [7]

Answer:

30 feet /second

Explanation:

60 feet/ 2 sec = 30 feet/sec

6 0
3 years ago
Read 2 more answers
2 unicellular no autotrophic It uses a flagellum. A. Kingdom animalia B. kingdom fungi B. kingdom plantae D. kingdom protista
Pachacha [2.7K]
I know the answer to the question
8 0
3 years ago
Other questions:
  • In the laboratory, a student adds 19.7 g of barium acetate to a 500. mL volumetric flask and adds water to the mark on the neck
    13·1 answer
  • What part of an atom is detected by stm?
    8·1 answer
  • What is the relationship between where the element is located within a "block" in the Periodic table and the superscripted value
    12·2 answers
  • What is the limiting reactant if 10 moles of NH 3 react with 30.0 moles of NO ?
    10·1 answer
  • If a bowing ball hits a wall with a force of 6 N, the wall exerts a force of ____ back on the bowing ball
    6·1 answer
  • Which products are the same in both the copper carbonate and the calcium carbonate reactions shown above
    8·1 answer
  • Is anyone good at chemistry if so can someone help me please ?<br><br> (NO LINKS)
    13·1 answer
  • STEP 5: LEAD
    12·2 answers
  • How much heat is required to raise the temperature of 1,500 g of water from 25°C to 52°C? The specific heat of water is 4.184 J/
    10·2 answers
  • crystals of anhydrous chromium(iii) chloride are violet and insoluble in aqueous solution. the coordination geometry of chromium
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!