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m_a_m_a [10]
3 years ago
5

Which of the following is not a base?

Chemistry
2 answers:
Step2247 [10]3 years ago
6 0
I think its A bc alcohol is not a base
vlada-n [284]3 years ago
5 0

Answer:   A. alcohol

Explanation:  A Base is defines as the species which can accept positive species and donate its negative species.

It can also be defined as the species which can release hydroxide ions when dissolved in water. These are basically known as the Arrhenius bases.

Thus out of given options, alcohol (ROH) is the correct option which is not a base as it can donate its proton due to the fact that the hydrogen is attached to the electronegative atom oxygen making it a acidic proton.

Potassium hydroxide (KOH) and Sodium Hydroxide (NaOH) are basic in nature as these are the ionic species which releases hydroxide ions.

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Determine the average atomic mass of the following mixture of isotopes of Potassium:
dexar [7]

Answer

the first one (im pretty sure)

Explanation:

5 0
3 years ago
Assuming that sea water is a 3.5 wt % solution of NaCl in water, calculate its osmotic pressure at 20°C. The density of a 3.5% N
olga nikolaevna [1]

Answer:

π = 14.824 atm

Explanation:

wt % = ( w NaCL / w sea water ) * 100 = 3.5 %

assuming w sea water = 100 g = 0.1 Kg

⇒ w NaCl = 3.5 g

osmotic pressure ( π ):

  • π = C NaCl * R * T

∴ T = 20 °C  + 273 = 293 K

∴ C ≡ mol/L

∴ density sea water = 1.03 Kg/L....from literature

⇒ volume sea water = 0.1 Kg * ( L / 1.03 Kg ) = 0.097 L sln

⇒ mol NaCl = 3.5 g NaCL * ( mol NaCL / 58.44 g ) = 0.06 mol

⇒ C NaCl = 0.06 mol / 0.097 L = 0.617 M

⇒ π = 0.617 mol/L * 0.082 atm L / K mol * 293 K

⇒ π = 14.824 atm

7 0
3 years ago
A cup of coffee has 71 mL of coffee and 127 mL of water. What is the percent volume of the coffee solution?
Anna [14]

Answer:

35.9%

Explanation:

The percent volume of the coffee solution can be calculated as follows:

% volume of coffee solution = volume of coffee/total volume of coffee solution × 100

According to this question, a cup of coffee has 71 mL of coffee and 127 mL of water. This means that, the total volume of coffee solution is;

71mL + 127mL = 198mL

% volume = 71/198 × 100

= 0.359 × 100

Percent volume of coffee solution = 35.9%

3 0
3 years ago
Solute and solvent of C12H22O11
nasty-shy [4]

Answer:

<u>s</u><u>u</u><u>g</u><u>a</u><u>r</u> is the solute and <u>w</u><u>a</u><u>t</u><u>e</u><u>r</u> is the solvent

8 0
3 years ago
A gas has experienced a small increase in volume but has maintained the same pressure and number of moles. According to the idea
krek1111 [17]

Answer:

If a gas has experienced a small increase in volume but has maintained the same pressure and number of moles, the temperature of the gas will DROP.

Explanation:

According to Boyle’s law of ideal gases, volume and temperature of a gas is inversely related, as long as the pressure is kept constant;

P₁V₁/T₁ = P₂V₂/T₂

Therefore, if the volume of the gas increases, the temperature will definitely decrease due to the inverse relationship. The gas will get cooler.  

Learn More:

For more on Boyle's Law check out;

brainly.com/question/13362447

brainly.com/question/2568628

brainly.com/question/12049334

#LearnWithBrainly

4 0
3 years ago
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