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
amm1812
2 years ago
15

What element has the electron configuration 1s2 2s2 2p6 3s2 3p1?

Chemistry
1 answer:
Westkost [7]2 years ago
3 0
1s2 2s2 2p6 3s2 3p1 is the electron configuration of Aluminum, written as Al.
You might be interested in
A flask with a volume of 125.0 mL contains air with a density of 1.298 g/L. what is the mass of the air contained in the flask?
horsena [70]
A flask with a volume of 125.0 mL contains air with a density of 1.298 g/L. what is the mass of the air contained in the flask<span>The given are: </span>
<span><span>1.      </span>Mass = ?</span><span><span /></span>
<span><span>2.      </span>Density = 1298 g/L</span>
3.      Volume = 125mL to L
a. 125 ml x 0.001l/1ml = 0.125 L

<span>Formula and derivation: </span><span><span>
1.      </span>density = mass / volume</span> <span><span>
2.      mass </span>= density / volume</span>

<span>Solution for the problem: </span><span><span>

1. mass = </span></span> <span> 1298 g/L / 0.125 L = 10384g
</span>


8 0
3 years ago
Balance each of these equations.
Oksanka [162]

Answer:

A. 2NO + O2 -> 2NO2

B. 4Co + 3O2 -> 2Co2O3

C. 2Al + 3Cl2 -> Al2Cl6

D. 2C2H6 + 7O2 -> 4CO2 + 6H2O

E. TiCl4 + 4Na -> Ti + 4NaCl

8 0
2 years ago
In the reaction FeCl2 + 2NaOH -&gt;Fe(OH)2(s) + 2NaCl, if 6 moles of FeCl2 are added to 6 moles of Na0H, how many moles of NaOH
pogonyaev

Answer : The correct option is, (B) 6 mole

Explanation :

Given moles of FeCl_2 = 6 moles

Given moles of NaOH = 6 moles

First we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

FeCl_2+2NaOH\rightarrow Fe(OH)_2+2NaCl

From the given balanced reaction, we conclude that

As, 1 moles of FeCl_2 react with 2 moles of NaOH

So, 6 moles of FeCl_2 react with \frac{2}{1}\times 6=12 moles of NaOH

From this we conclude that, FeCl_2 is an excess reagent and NaOH is a limiting reagent because the given moles are less than the required moles and it limits the formation of product.

Thus, the number of moles of NaOH used up in the reaction = Required moles of NaOH - Given moles of NaOH

The number of moles of NaOH used up in the reaction = 12 - 6 = 6 moles

Therefore, the number of moles of NaOH used up in the reaction will be, 60 moles

4 0
2 years ago
Read 2 more answers
Okay help please will give brainlist
pashok25 [27]

Answer:

b.

Explanation:

hope that helped you

3 0
2 years ago
10. Which of these measurements have four significant figures? *
anastassius [24]

Answer:

3.050 g

Explanation:

6 0
3 years ago
Other questions:
  • Which of the following substances would best be measured using mole quantities?
    10·1 answer
  • Determine % yield if a student obtains 45 g of product in an experiment and the theoretical amount is determined to be 50 g
    6·1 answer
  • During the synthesis of a triglyceride from its subunits, how many molecules of water are produced from dehydration synthesis?
    11·1 answer
  • Carbonic acid dissolves limestone and other rocks. This is an example of _____. chemical errosion
    15·1 answer
  • Which statement about oxidation and reduction in a voltaic cell is true? Both oxidation and reduction occur at the anode.
    8·1 answer
  • The goal of this experiment was to answer the
    12·1 answer
  • What is the formula for calculating the energy of a photon?
    11·1 answer
  • What are middle-latitude cyclones?
    11·1 answer
  • How is the air in tube 4 kept out of contact with the nail​
    13·1 answer
  • Help please! :)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!