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
Romashka-Z-Leto [24]
3 years ago
11

Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,00

0,000,000,000. How is this number expressed in scientific notation? A. B. C. 6.02/1023 D. 6.02 × 1023 E. 6.02 × 10-23
Chemistry
2 answers:
djverab [1.8K]3 years ago
8 0

Answer : The correct option is, (D) 6.022\times 10^{23}

Explanation :

Scientific notation : It is defined as the way or representation of expressing the number that are too big or too small that is written in the decimal form. That means always written in the power of 10 form.

For example : 700 is written as, 7\times 10^2

As we are given that the value of Avogadro’s number is, 602,200,000,000,000,000,000,000

This number is written in scientific notation as :

6.022\times 10^{23}

Therefore, the correct option is, (D) 6.022\times 10^{23}

kondaur [170]3 years ago
5 0

Avogrado's number = 6.022 × 10^23



You might be interested in
How many grams of sulfur are required in the preparation of 35.7 moles of sulfur dioxide Sg + O2 SO2​
lidiya [134]
  • S+O_2-->SO_2

Its balanced already

So

  • 1 mol SO_2 require 1 mole sulphur
  • 35.7moles require 35.7mol sulphur

Mass of S

  • 35.7(32)
  • 1142.4g
6 0
2 years ago
Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.
zavuch27 [327]

15.63 mol. You need 15.63 mol HgO to produce 250.0 g O_2.

<em>Step 1</em>. Convert <em>grams of O_2 to moles of O_2</em>

Moles of O_2 = 250.0 g O_2 × (1 mol O_2/32.00 g O_2) = 7.8125 mol O_2

<em>Step 2</em>. Use the molar ratio of HgO:O_2 to convert <em>moles of O_2 to moles of HgO </em>

Moles of HgO = 0.8885 mol O_2 × (2 mol HgO/1 mol O_2) = <em>15.63 mol HgO</em>

7 0
3 years ago
Read 2 more answers
Plz help. I just need someone to check answer. :(
My name is Ann [436]
These substances can be separated by distillation, so your answer is A.
5 0
3 years ago
Part iv. Is the neutralization reaction enthalpy favored?
Burka [1]

Yes, it is a special case of enthalpy of neutralization.  

The enthalpy of neutralization (ΔHn) is the change in enthalpy that occurs when one equivalent of an acid and one equivalent of a base undergo a neutralization reaction to form water and a salt.

The standard enthalpy change of neutralization is the enthalpy change when solutions of an acid and an alkali react together under standard conditions to produce 1 mole of water.

5 0
2 years ago
Jelaskan perbedaan asam lemah dan asam kuat menurut teori arrhenius
AleksandrR [38]

<span>Explain the difference between a weak acid and a strong acid according to the Arrhenius theory his question in english</span>
6 0
3 years ago
Other questions:
  • Which of the following species is a molecular element? Which of the following species is a molecular element? sodium neon carbon
    15·1 answer
  • Fires in forests can sometimes be stopped by cutting down trees to make a gap (called a 'fire break'). Which part of the fire tr
    13·1 answer
  • A common radio wavelength observed coming from astronomical objects is 21 cm. What temperature is associated with this radiation
    9·1 answer
  • A solution containing sodium fluoride is mixed with one containing calcium nitrate to form a solution that is 0.015M in NaF and
    7·1 answer
  • When two volatile liquids (X and Y) are mixed, the solution process involves 1. breaking the intermolecular X---X and Y---Y attr
    13·2 answers
  • When the boat is placed on the scale, how does its weight compare to the weight of the water it displaced?
    12·2 answers
  • Hydrogen (H) and helium (He) are produced in the core of stars in a process called nuclear fusion. Over time stars begin to prod
    8·1 answer
  • The food that plants produce during photosynthesis is
    14·1 answer
  • What is the number of Carbon atoms in 9.837 x 1024 molecules of CO2
    13·1 answer
  • The reaction between calcium carbonate (CaCO3) and HCl produces calcium chloride (CaCl2), carbon dioxide (CO2), and water (H2O).
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!