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
aalyn [17]
2 years ago
13

Which element is one of the most abundant in both solid parts of earth and in living matter?.

Chemistry
1 answer:
SVEN [57.7K]2 years ago
7 0

carbon, hydrogen, oxygen, and nitrogen are the most important elements!
You might be interested in
What represents the hemisphere
Natasha_Volkova [10]
A line. You can even check a map

6 0
3 years ago
PLEASE HELP THIS IS AN EMERGENCY!!!!!
otez555 [7]

Answer:

D

Explanation:

i think its D because 3p33d74s2

6 0
2 years ago
The equilibrium for the indicator methyl orange is HC14H14SO3(red) + H2O C14H14SO3−(yellow) + H3O+ The reaction is exothermic.
muminat

Answer:

The solution will turn red.  

Explanation:

HC₁₄H₁₄SO₃ + H₂O ⇌ HC₁₄H₁₄SO₃⁻ +H₃O⁺

     (red)                           (yellow)

Methyl orange is a weak acid in which the ionized and unionized forms are distinct colours and are in equilibrium with each other,

At about pH 3.4,  the two the forms are present in equal amounts, and the indicator colour is orange.

If you add more acid, you are disturbing the equilibrium.

According to Le Châtelier's Principle, when you apply a stress to a system at equilibrium, it will respond in such a way as to relieve the stress.

The system will try to get rid of the added acid, so the position of equilibrium will move to the left.

More of the unionized molecules will form, so the solution will turn red.

 

4 0
3 years ago
Explain why 5.00 grams of salt does not contain the same number of particles as 5.0 grams of sugar​
Tom [10]

Answer:

5.00 grams of salt contain more particles than 5.0 grams of sugar​

Explanation:

Salt = NaCl

Molar mass = 58.45  g/mol

Sugar = C₁₂H₂₂O₁₁

Molar mass = 342.3 g/mol

Sugar's molar mass is higher than salt.

So 1 mol of sugar weighs more than 1 mol of salt

But 5 grams of salt occupies more mole than 5 grams of sugar

5 grams of salt = 5g / 58.45 g/m = 0.085 moles

5 grams of sugar = 5g/ 342.3 g/m = 0.014 moles

In conclusion, we have more moles of salt in 5 grams; therefore there are more particles than in 5 g of sugar.

3 0
3 years ago
If the energy of photon emitted from the hydrogen atom is 4.09 x 10-19 J, what is
Aliun [14]

Answer:

486 nm

Explanation:

From the question given above, the following data were obtained:

Energy (E) = 4.09×10¯¹⁹ J

Wavelength (λ) =?

Next, we shall determine the frequency of the photon. This can be obtained as follow:

Energy (E) = 4.09×10¯¹⁹ J

Planck's constant (h) = 6.63×10¯³⁴ Js

Frequency (f) =?

E = hf

4.09×10¯¹⁹ = 6.63×10¯³⁴ × f

Divide both side by 6.63×10¯³⁴

f = 4.09×10¯¹⁹ / 6.63×10¯³⁴

f = 6.17×10¹⁴ Hz

Next, we shall determine the wavelength of the photon. This can be obtained as follow:

Frequency (f) = 6.17×10¹⁴ Hz

Velocity of photon (v) = 3×10⁸ m/s

Wavelength (λ) =?

v = λf

3×10⁸ = λ × 6.17×10¹⁴

Divide both side by 6.17×10¹⁴

λ = 3×10⁸ / 6.17×10¹⁴

λ = 4.86×10¯⁷ m

Finally, we shall convert 4.86×10¯⁷ m to nm. This can be obtained as follow:

1 m = 1×10⁹ nm

Therefore,

4.86×10¯⁷ m = 4.86×10¯⁷ m × 1×10⁹ nm / 1 m

4.86×10¯⁷ m = 486 nm

Therefore, the wavelength of the photon is 486 nm

7 0
3 years ago
Other questions:
  • tell how a voltaic cell works. be sure to mention the various parts of the voltaic cell and what they have to do with how it wor
    7·1 answer
  • What would indicate that a physical change takes place when copper is drawn into wire? Copper is heated, changing its molecular
    10·2 answers
  • How many atoms are there in 1.3 x 10^22 molecules of N(O)2
    11·2 answers
  • the characteristic ions present in water solutions of acids are A) oxide ions B) chloride ions C)hydronium ions D)nitride ions
    15·1 answer
  • What solutions do we need to work on to get accurate results?<br> A) concentrated<br> B) diluted
    12·1 answer
  • 1pt Which is an example of an alloy?<br> O A. steel<br> OB. salt water<br> O C. air<br> O D. iron
    7·1 answer
  • The diagram below shows the different phase transitions that occur in matter. Three bars are shown labeled Solid, Liquid, and Ga
    15·1 answer
  • What is the formula for chromium (II) acetate?
    12·1 answer
  • How valence electrons does oxygen have.
    15·2 answers
  • g in the combustion of 0.398 mol c4h8, how many moles of o2 would be required to completely react with the fuel?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!