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Svetach [21]
3 years ago
12

When salt dissolves in water, what type of substance is formed? A heterogeneous mixture, because the different components are mi

xed unevenly within the substance a heterogeneous mixture, because the different components are mixed evenly within the substance a homogeneous mixture, because the different components are mixed unevenly within the substance a homogeneous mixture, because the different components are mixed evenly within the substance?
Chemistry
1 answer:
Rudik [331]3 years ago
6 0
<h3>Answer:</h3>

            When Salt dissolves in water <u>a homogeneous mixture</u> is formed, because the different components are mixed evenly within the substance. Hence, last option is the correct answer.

<h3>Explanation:</h3>

                   When solute is dissolved in solvent then a mixture is formed. This resulting mixture can be Homogeneous or Heterogeneous. Homogeneous mixtures results when the solute particles are uniformly distributed throughout  the mixture while, in heterogeneous mixture the solute particles are unevenly distributed.

                   Therefore, water soluble salts when added to water dissociates into corresponding cations and anions as,

                                MN    --------water-------->   M⁺₍aq₎  +  N⁻₍aq₎

Where;

           MN  =  Salt

           M⁺  =  Cation

           N⁻  =  Anion

           aq  =  dissolved in water

After dissociation the cations formed interact with the partial negative oxygen atom of water molecule and anions interacts with the partial positive hydrogen atom of water molecules respectively. Hence, these charged ions are uniformly distributed throughout the mixture.

You might be interested in
What is the concentration of no3- ions in a solution prepared by dissolving 15.0 g of ca(no3)2 in enough water to produce 300. m
r-ruslan [8.4K]

Ca(NO3)2 -------> Ca²⁺ +2NO3⁻

M(Ca(NO3)2)= M(Ca) + M(N) + 6M(O)= 40.0 +14.0 +6*16.0 = 150 g/mol

15.0 g Ca(NO3)2 * 1mol/150 g = 0. 100 mol Ca(NO3)2


Ca(NO3)2 -------> Ca²⁺ +2NO3⁻
1 mol                               2 mol
0.100 mol                           0.200 mol

We have 0.2 mol NO3⁻ in 300. mL=0.300 L of solution,
so
0.200 mol NO3⁻ / 0.300 L solution ≈ 0.667 mol NO3⁻ /L solution = 0.667 M

Concentration of NO3⁻ is 0.667 M.



4 0
3 years ago
Why do you think most lampshades are made of translucent materials instead of transparent materials?
Gala2k [10]

Explanation:

because translucent shades lets the light through easily (gentle diffusion)

6 0
2 years ago
2
nignag [31]

Answer:

D

Explanation:

I think it is D. Think about it- if a human jumps, they are less than the gravitational force. But, if you are greater than the gravitational force, I think you will go into space.

4 0
3 years ago
An antacid tablet contains 640.0 mg of magnesium oxide per tablet.
Salsk061 [2.6K]

Answer:

317.6 mL

Explanation:

Step 1: Write the balanced neutralization equation

MgO + 2 HCl ⇒ MgCl₂ + H₂O

Step 2: Calculate the mass corresponding to 640.0 mg of MgO

The molar mass of MgO is 40.30 g/mol. The moles corresponding to 640.0 mg (0.6400 g) of MgO are:

0.6400 g × (1 mol/40.30 g) = 0.01588 mol

Step 3: Calculate the moles of HCl that react with 0.01588 moles of MgO

The molar ratio of MgO to HCl is 1:2. The moles of HCl are 2/1 × 0.01588 mol = 0.03176 mol

Step 4: Calculate the volume of 0.1000 M HCl that contains 0.03176 moles

0.03176 mol × (1 L/0.1000 mol) = 0.3176 L = 317.6 mL

3 0
3 years ago
12.00 moles of naclo3 will produce how many grams of O2? (Moles to Grams)
Sergeu [11.5K]
2NaClO₃   →  2NaCl  +  3O₂

mole ratio of NaClO₃  to  O₂  is  2  :  3

∴  if moles of NaClO₃  =  12 mol

then moles of O₂  =  \frac{12 mol   *   3}{2}
      
                             =  18 mol


Mass of O₂  =  mol of O₂  ×  molar mass of O₂
 
                    =  18 mol  × 16 g/mol
 
                    =  288 g

So I wasn't sure which equation to use since you did not specify so I just used the decomposition reaction.  If you should have used another reaction then just follow the same steps and you'll get your answer.




4 0
3 years ago
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