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3 years ago

12

You are measuring the effects of salt on water's ability to freeze. To one of your water samples, you add sodium chloride (NaCl,

or salt). In this solution, which part is the solvent?
Question 8 options:

Water

NaCl

Both

Neither

1 answer:

yulyashka [42]3 years ago

7 0

Answer:

water

water is the worlds best solvent cause it can melt many different things also it is called the "Universal Solvent"

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Determine the net iconic equation for the following chemical reaction: HCl(aq) + NH4OH(aq)———-> NH4Cl(aq) + H2O(I) Hint: HCl(

katen-ka-za [31]

Answer : The net ionic equation will be,

$H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The given balanced ionic equation will be,

$HCl(aq)+NH_4OH(aq)\rightarrow NH_4Cl(aq)+H_2O(l)$

The ionic equation in separated aqueous solution will be,

$H^+(aq)+Cl^-(aq)+NH_4^+(aq)+OH^-(aq)\rightarrow H_2O(l)+NH_4^+(aq)+Cl^-(aq)$

In this equation, $NH_4^+\text{ and }Cl^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)$

5 0

3 years ago

In at least 4 complete sentences, describe the similarities and differences between Avogadro's Law and Charles' Law.

viktelen [127]

answer

Avogadro's law states that, at constant temperature and pressure, the volume of a gas is directly proportional to the number of moles present. In other words, equal volumes of gases at the same pressure and temperature contain the same number of molecules - this is true regardless of their physical properties or chemical nature.

This number of molecules is

6.022

⋅

10

23

and is known as Avogadro's number,

N

A

.

Matematically, Avogadro's law can be written like this

V

n

=

c

o

n

s

t

, or, better yet,

V

1

n

1

=

V

2

n

2

.

Avogadro's law, as well as Boyle's law and Charles' law, are special cases of the ideal gas law,

P

V

=

n

R

T

. If temperature and pressure are kept constant, and knowing that

R

is of course constant, then

P

V

=

n

R

T

→

P

V

n

=

R

T

→

V

n

=

R

T

P

=

c

o

n

s

t

, which represents Avogadro's law.

The ideal gas law can also be written to incorporate

N

A

, since the number of moles are actually the number of molecules divided by Avogadro's number

P

V

=

N

N

A

⋅

R

T

, where

N

represents the number of molecules.

7 0

3 years ago

What type of reaction occurs in a hand warmer?<br> Exothermic<br> Endothermic

storchak [24]

Answer:

The reaction is exothermic.

Explanation:

8 0

3 years ago

Of the elements: b, c, f, li, and na. the element with the smallest ionization energy is

love history [14]

B- 8.2980
C- 11.2603
F- 17.4228
Li- 5.3917
Na- 5.1391

I would say your answer is Na.

8 0

4 years ago

The following reactions take place in the ozone layer by the absorption of ultraviolet light.

____ [38]

Answer:

Option B will require a shorter wave length of light.

Explanation:

The bonding between Ozone (O3) and Oxygen (O2) can be used to explain why the breaking of oxygen into Oxygen radicals will require a shorter wave length.

The bond between Oxygen (O2) is a double bond while Ozone (O3) has an intermediate bond between a double bond and a single bond.

The bond order of Oxygen (O2) is equals 2 while that of Ozone (O3) is 1.5. Since the bond order of oxygen is higher, it will require more energy to break the bond compared to breaking the Ozone (O3) bond.

Recall that Energy is inversely proportional to wave length.

So it will require a shorter wave length to break the Oxygen (O2) into its radicals.

5 0

3 years ago