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
anzhelika [568]
3 years ago
5

Plz help I need to bring up my grade, this will help bring up my grade !!!!!!!

Chemistry
1 answer:
BartSMP [9]3 years ago
3 0

Answer:

WHY: You can abbreviate an element's electron configuration using the noble gas notation method because when you get down to the lower elements, specifically the d's and the f's, the electron configuration will be very long. The noble gas notation method is a faster answer while also being correct.

HOW: We can abbreviate an element's electron configuration by finding the last noble gas a specific element passed, for example calcium would have just passed Argon. Once you have the "address" of the previous noble gas, then you add on the difference between the element chosen and the noble gas, for example calcium would be [Ar] 4s^2.

Explanation:

You might be interested in
The rate constant for a certain reaction is k = 5.40×10−3 s−1 . If the initial reactant concentration was 0.100 M, what will the
IceJOKER [234]

Answer : The concentration after 17.0 minutes will be, 4.05\times 10^{-4}M

Explanation :

The expression for first order reaction is:

[C_t]=[C_o]e^{-kt}

where,

[C_t] = concentration at time 't'  (final) = ?

[C_o] = concentration at time '0' (initial) = 0.100 M

k = rate constant = 5.40\times 10^{-3}s^{-1}

t = time = 17.0 min = 1020 s (1 min = 60 s)

Now put all the given values in the above expression, we get:

[C_t]=(0.100)\times e^{-(5.40\times 10^{-3})\times (1020)}

[C_t]=4.05\times 10^{-4}M

Thus, the concentration after 17.0 minutes will be, 4.05\times 10^{-4}M

4 0
3 years ago
What is the product of the reaction of hydrobromic acid and 2-bromo-1-butene in the presence of acid and ether?
sergejj [24]

Answer: The major product of the reaction between Hydrobromic Acid and 2-bromo-1-butene in the presence of ether and acid is 2,2-dibromobutane.

Explanation:

The mechanism of the reaction is supported by the Markovnikov's rule which explains that in the addition reaction of alkenes by hydrogen-halogen compounds, the incoming halogen substituent goes to the more substituted Carbon. It can also be stated that incoming hydrogen atom goes to the Carbon with more Hydrogen atoms.

The only case when the reverse of Markovnikov's rule takes place is when Hydrogen peroxide is present and the addition reagent is HBr.

This case is not like that and it simply follows the Markovnikov's rule.

I'll add an attachment of the reaction to this now.

6 0
4 years ago
Read 2 more answers
A ball is rolling across the floor. Every 3 seconds it travels 12 meters. Its speed, therefore, is 36 m/s. Is this problem solve
kirill [66]
No because you are supposed to do this

d = t)v
T for time and V for velocity or acceleration so what you do is take the two numbers

D= 3/12 it goes 12 meters every 3 seconds so you devide 12/3
12 \div 3 = 4
So for every second the ball roles 4 meters!
Hope this helps! :)
7 0
3 years ago
Which solution has a molality of 0.25m nacl?
Solnce55 [7]

Molality can be expressed by moles of solute over kilograms of solvent. The question asks the molality of 0.25m NaCl. 0.25m NaCl is equal to 0.25 moles of NaCl over 1 kg of water.

5 0
4 years ago
Read 2 more answers
POSSIB
siniylev [52]

Answer:

96.99 C degree change

Explanation:

  480 cal  / ( 150 g * .033 cal/g-C )  = 96.99 C

8 0
2 years ago
Other questions:
  • If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3
    10·1 answer
  • Which of the following is not a valid conversion factor? 1/100 centimeter 1mL/1cm^3 1kilometer/1000 meters 1meter/10 milimeters
    9·2 answers
  • Keep an emergency kit and fresh water in your car in the event of _____.
    8·1 answer
  • Tips for high school
    9·2 answers
  • The currently accepted model of the atom includes an electron cloud.<br> A. True<br> B. False
    13·2 answers
  • What does he want? change into passive ​
    12·1 answer
  • Which statement accurately describes what happens when ice melts in terms of energy?
    11·1 answer
  • Someone pls help me I will make you brain
    13·1 answer
  • If your sweat glands suddenly got clogged or blocked, what function of the Integumentary system might not work anymore?
    14·1 answer
  • Lake Baikal in Siberia is the largest freshwater body on Earth by volume, at 5666 mi³
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!