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
Monica [59]
2 years ago
8

Please help me with this

Chemistry
1 answer:
Sophie [7]2 years ago
7 0

Answer:

5.0 38 84.0 749.7 528.0 729.0 738.9 739.0

You might be interested in
Density of 30.00 mL of H2O
ohaa [14]

its not possible sorry

6 0
3 years ago
If a buffer solution is 0.220 M in a weak acid ( Ka=7.4×10−5) and 0.540 M in its conjugate base, what is the pH?
valkas [14]

Answer: the pH of the solution is 4.52

Explanation:

Consider the weak acid as Ha, it is dissociated as expressed below

HA     H⁺  +  A⁻

the Henderson -Haselbach equation can be expressed as;

pH = pKa + log( [A⁻] / [HA])

the weak acid is dissociated into H⁺ and A⁻ ions in the solution.

now the conjugate base of the weak acid HA is

HA(aq) {weak acid}     H⁺(aq)  +  A⁻(aq) {conjugate base}

so now we calculate the value of Kₐ as well as pH value by substituting the values of the concentrations into the equation;

pKₐ = -logKₐ

pKₐ = -log ( 7.4×10⁻⁵ )

pKₐ = 4.13

now thw pH is

pH = pKₐ  + log( [A⁻] / [HA])

pH = 4.13 + log( [0.540] / [0.220])

pH = 4.13 + 0.3899

pH = 4.5199 = 4.52

Therefore the pH of the solution is 4.52

6 0
3 years ago
In which state of matter do particles have the least amount of energy
kogti [31]

Answer:

solid

Explanation:

8 0
3 years ago
Compound element ratio of 1:2:6<br> Ba(NO3)2+Na2SO4
Karo-lina-s [1.5K]

1:2:6? Ba(NO3)2 +Na2SO4 -----> BaSO4 + 2NaNO3

Ba(NO3)2

BaSO4

NaNO 3

Na2SO4

5 0
3 years ago
Read 2 more answers
Sediment layers stop lateral spreading when:
Xelga [282]

Answer:

Peepee poopoo!

Explanation:

7 0
3 years ago
Other questions:
  • If you are given an ideal gas with pressure (p)259,392.00 pa and temperature (T)=200°c of 1 mole Argon gas in a volume 8.8dm3,ca
    15·1 answer
  • What would happen to a eukaryotic cell if its all mitochondria were destroyed 
    6·1 answer
  • What are the major difference between potential and kinetic energy?​
    11·1 answer
  • Why is it important for people to understand how to properly dispose of waste in a watershed?
    8·1 answer
  • Is D correct? Please helpppppppppppp
    11·2 answers
  • If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent? 2KNO3 + 10K 6K2O
    12·2 answers
  • How do I solve this?
    7·1 answer
  • Atoms of which of the following elements have the smallest atomic radius?
    8·1 answer
  • Which will not appear in the equilibrium constant expression for the reaction below?
    5·1 answer
  • Water and a nonpolar substance will need to be forcibly mixed. this best describes a(n):__________
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!