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
Natali5045456 [20]
3 years ago
6

How many hydrogen atoms are contained in 0.40 mL of water, given that the density of water is 1 g/ml?

Chemistry
1 answer:
Paladinen [302]3 years ago
3 0

Answer:

2.676e22 atoms of Hydrogen

Explanation:

Knowing the density of water is 1g/ml, 1(g/ml)*0.4ml=0.4 grams of H2O. Knowing that there are 16 grams of H2O in 1 mole of H2O, we can set up a unit conversion of 0.4 Grams H2O * \frac{1 mol H_2O}{18 grams H_2O}*\frac{2 mol H}{1 mol H_2O} *\frac{6.022e23 atoms of H}{1 mol H}=

2.676e22 atoms of Hydrogen.

You might be interested in
Describe how water molecules interact with sodium chloride molecules in order for water to dissolve salt.
Phantasy [73]

Answer:

Sodium chloride is an ionic salt that completely dissociates in water.

Explanation:

Sodium chloride in water dissociates according to the equation.

NaCl (aq) → Na + (aq) + Cl- (aq)

While water stays in balance according to the equation

2H2O (l) ⇄ H3O+(aq)  +  OH-(aq).

By dissociating the solute in the solvent, the water molecules pick up the sodium cations as well as the chloride anions to break the bonds in the salt crystals and thus produce the dissolution

If the ions are analyzed separately, we see that Na + interacts with water, so it would be producing sodium hydroxide, releasing protons.  

If the reaction goes in the sense of products, the Na + would increase the concentration of [H +], however being a neutral salt the pH does not vary from 7, so the reaction would never go in the sense of products, but only reagents. That's why as the sodium hydroxide is a strong base, it only promotes the formation of water and the cation.

Na+  +  H2O  ←  NaOH  +  H+

The same situation occurs with chloride, since no matter how much you want to form hydrochloric acid, it dissociates by promoting the formation of water plus the corresponding anion. Na + and Cl- act as too weak conjugate acid and base, so the reaction would never go in the direction of products

Cl-  +  H2O  ←  HCl  +  OH-

3 0
3 years ago
NEED HELP!!! PLEASE, AND THANK YOU!!! ^^ <3
Aneli [31]

Answer:

B

Explanation:

7 0
3 years ago
Read 2 more answers
The molar mass of a hydrocarbon is 58.0 g/mol. If it contains 18.0 grams of Carbon and 3.75 grams of hydrogen. what is its MOLEC
tangare [24]

Answer:

Carbon is neutral regular gas vapors arent

Explanation:

7 0
2 years ago
These are large chemical compounds, primarily consisting of carbon and hydrogen, that exist in living organisms.
TEA [102]
It is called a Biomolecule
4 0
3 years ago
Read 2 more answers
It takes a person 35 seconds to swim in a straight line from the east end of a pool to the west end of the pool, a distance of 5
viktelen [127]

Answer:

1.42m/s

Explanation:

velocity=displacement/time

v=50/35=1.42m/s

4 0
3 years ago
Other questions:
  • A blank observation is when you describe something
    7·1 answer
  • Compared to a 0.1 M aqueous solution of NaCl, a 0.8 M aqueous solution of NaCl has a
    12·1 answer
  • How many milliliters of .085 m naoh are required to titrate 25 ml of .072 m hbr to the equivalence point?
    5·1 answer
  • Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 1.40 L of solution.
    10·1 answer
  • 1. Explain how groups 1A-8A in the periodic table are organized by their number of valence electrons.
    15·1 answer
  • PLEASE HELP HELP I NEED THIS ASAP
    11·2 answers
  • Curium-242 undergoes alpha decay. In addition to the alpha particle, which
    8·2 answers
  • Help!!!! What type of compound is N2O3? And what is its name?​
    9·1 answer
  • The number of bonds in nitrogen molecule is:
    12·2 answers
  • Which compound has both covalent and ionic bonds? pls give the explanation thx :)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!