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
mariarad [96]
3 years ago
7

Given that the antacid milk of magnesia contains 400. mg of Mg(OH)2 per teaspoon, calculate the number of milliliters of stomach

acid that are neutralized by 1 tablespoon of milk of magnesia. (1 tablespoon 3 teaspoons.) Express the volume in millilite rs to two significant figures.
Chemistry
1 answer:
dem82 [27]3 years ago
4 0

Answer:

1.5 ml

Explanation:

Assuming that the stomach acid is HCl then:

Mg(OH)₂ + 2HCl → MgCl₂ + H₂O

since

number of moles of Mg(OH)₂ = mass / molecular weight of Mg(OH)₂ = 3*400 mg / 58.3 gr/mol = 20.583 m mol

thus

number of moles of HCl required = number of moles of Mg(OH)₂*2 = 41.166 m mol  = 41.166 m moles

knowing that

density = mass / volume = (molecular weight* moles) / volume

volume =(molecular weight* moles)/ density

thus for HCl

volume =  (36.46 gr/mol * 41.166*10^-3 moles)/( 1 gr/cm³)= 1.5 cm³= 1.5 ml

You might be interested in
Which type of atom has the strongest attraction for electrons in bond formation
castortr0y [4]
The atom with the strongest attraction for electrons in bond formation is the atom with the most positive charge since an electron has a negative charge. Unlike attracts like. Among these, Sr and ba has 2+ and has the greatest charge but ba<span> has a stronger electron affinity (decreasing from top to bottom). answer is barium.</span>
4 0
3 years ago
Possible isomers of C4H9I​
amm1812

Answer:

there are 4 possible isomers

5 0
2 years ago
A sample of gas occupies 17 mL at -122°C. What volume does the sample occupy at 70°C?
aev [14]

Answer: 38.6 ml

Explanation:

Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.


V\propto T    (At constant pressure and number of moles)

\frac{V_1}{T_1}=\frac{V_2}{T_2}

V_1= initial volume = 17 ml

V_2= final volume = ?

T_1= initial temperature =-122^0C=273+(-122)=151K

T_2=final temperature=70^0C= 70+273=343K

\frac{17}{151}=\frac{V_2}{343}

V_2=38.6ml

Thus final volume is 38.6 ml at 70^0C




7 0
3 years ago
Explain how the attractive forces between the particles in a liquid are related to the equilibirum vapour pressure of that liqui
drek231 [11]

Answer:

Attractive forces between particles are inversely proportional to vapour pressure.

Explanation:

Inside a liquid, molecules undergo random motion (thermal motion), but also interact with one another via electromagnetic forces of different kinds, like Van der Waals forces, ion-dipole interactions, hydrogen bonds, etc. These forces keep the liquid together, giving it a definite volume, in distinction to gases, which take the volume of the vessel that contains them.

Now, some molecules in a liquid can attain a high velocity as a random outcome of thermal motion, if this molecule is at the liquid's surface, it might actually escape! actually, many molecules might do that, and form a vapour over the liquid's surface.

Now, we know that liquids exist, therefore this process has to reach an equilibrium, that means, once the vapour becomes <em>dense </em>(or <em>concentrated</em>)<em> </em>enough, it would be as likely for a vapour molecule to re-enter the liquid as it is likely for a liquid molecule to leave the liquid and enter into the vapour.

This is called vapour-liquid equilibrium.  

How can we measure how "concentrated" the vapour is? by measuring the pressure above the liquid. We know by the ideal gas law that the number of molecules in a gas is proportional to pressure at constant volume and temperature.

But how does vapour pressure relate to intermolecular forces?

Simply, the stronger the intermolecular forces, the less likely a molecule at the liquid's boundary will be to shoot of into the vapour phase! and viceversa, if intermolecular forces are very weak, the molecules won't hold together much and many molecules will leave the liquid.

As an extreme case imagine a solid, for which intermolecular forces are the strongest, what's the vapour pressure of a solid? Do solids evaporate into the air?  The answer is no, solids (with few exceptions) don't evaporate, and their vapour pressure is extremely small.

Cheers!

5 0
3 years ago
What does the speed of seismic wave depend on
juin [17]
Waves depends on density and elasticity of the medium
6 0
3 years ago
Other questions:
  • For a hydrogen atom, which electronic transition would result in the emission of a photon with the highest energy?
    11·1 answer
  • How many neutrons does element X have if its atomic number is 26 and its mass number is 76
    9·1 answer
  • which contains the most amount of energy a glass of water at 20C or a glass of water at 80C. EXPLAIN ANSWER
    11·1 answer
  • Explain the steps involved In the purification and treatment of drinking water<br>​
    13·2 answers
  • What may be expected when k &gt; 1.0?
    12·1 answer
  • Balance the combustion reaction between octane and oxygen. 2C8H18 + O2 → CO2 + H2O
    12·2 answers
  • Why do orb webs hav non-sticky radius threads ?
    6·1 answer
  • What is the mass in grams of 2.21 mole of Ca3(PO4)4?
    8·1 answer
  • What happens during nuclear reaction that does not happen during a chemical reaction?
    15·1 answer
  • Provide the correct IUPAC name for Sr(OH)2 - 7H20.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!