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
hoa [83]
3 years ago
5

ANSWER ASAP (20 POINTS)

Chemistry
1 answer:
SIZIF [17.4K]3 years ago
5 0

Answer:

a chemical formula

Explanation:

You might be interested in
A box contains identical balls of which 12 are red, 18 white and 8 blue. Three balls are drawn from the box one after the other
svet-max [94.6K]

Answer:

a) 12/323

b) 8/233

Explanation:

a) The probability of a red ball being drawn is 12/38, or in a simplified fraction, 6/19. To find the probability that 3 are red you would multiply the probability of the fraction for each, except subtracting one from the total each time as the drawn is done without replacement. This is done as follows: 6/19 × 6/18 × 6/17= 12/323

b) The probability of drawing a blue ball is 8/38, or 4/19. To find that the first one is blue and the rest are red, the equation is done as follows: 4/19 × 6/18 × 6/17 = 8/233

(hopefully I did this right)

8 0
3 years ago
F a shell can hold a maximum of 32 electrons, what is the value of n? 2 3 4 5
Arte-miy333 [17]

Answer: 4

Explanation:

Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.

Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as m_l. The value of this quantum number ranges from (-l\text{ to }+l). When l = 2, the value of m_l will be -2, -1, 0, +1, +2.

Given : a f subshell, thus l = 3 , Thus the subshells present would be 3, 2, 1, 0 and thus n will have a value of 4.

Also electrons give are 32.

The formula for number of electrons is 2n^2.

2n^2=32

n=4

Thus principal quantum no will be n= 4.

8 0
3 years ago
Read 2 more answers
Which element is in period 1, group 8
tatuchka [14]
<span> iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). They are all transition metals.</span>
5 0
3 years ago
How does body temperature, energy level, and water level affect a person’s ability to survive?
kifflom [539]
U won’t get hyperthermia or a heat stroke when ur hot u use up more energy but when ur cold u use up less
4 0
3 years ago
Ammonium nitrate dissociates in water according to the following equation:
Viktor [21]

Answer:

Explanation:

NH₄NO₃ = NH₄⁺ +NO₃⁻

heat released  by water = msΔ T

m is mass , s is specific heat and ΔT is fall in temperature

= 50  x 4.18 x ( 22 - 16.5 )  ( mass of 50 mL is 50 g )

= 1149.5 J .

This heat will be absorbed by the reaction above .

q for the reaction = + 1149.5 J

2 )

molecular weight of NH₄NO₃ = 80

No of moles reacted = 5/80 = 1 / 16 moles.

3 )  

5 g absorbs 1149.5 J

80 g absorbs 1149.5 x 16 J

= 18392 J

= 18.392 kJ.

= + 18.392 kJ

ΔH =  18.392 kJ / mol

6 0
3 years ago
Other questions:
  • The atoms of which element will typically form ions
    14·1 answer
  • Which doesn't belong in the group?
    5·1 answer
  • What is this: changing state from liquid to gas; gas bubbles form in the liquid
    11·1 answer
  • The total number of atoms represented by the formula Fe3(PO4)2 is
    9·2 answers
  • Who was the first to propose the idea of atoms?
    5·2 answers
  • How does a catalyst increase the rate of a reaction?
    9·1 answer
  • What type of factors affect the speed of light? explain
    7·1 answer
  • What affects the nervous system? and how does it affect the nervous system?
    10·2 answers
  • Each particle of water in an ocean wave moves in a circle true or false
    13·1 answer
  • 1. What is the Charlotte?<br> A. A train<br> B. A car<br> D. An airplane<br> C. A ship
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!