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
lozanna [386]
3 years ago
5

The pH of a 0.25 M (aq) solution of hydrofluoric acid, HF, at 25C is 2.03. What is the value of Ka for HF? Pls show all mathemat

ical calculations
Chemistry
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

Explanation:

b bhmj sjvkjwv

'

You might be interested in
First person to comment there crush name get brainlyest
aleksandr82 [10.1K]

Answer:

:0

Explanation:

David <3

5 0
2 years ago
1. BaBr2(aq) + H2SO4(aq) →?<br> please balance the equation and predict the products
Andrew [12]

Answer:

BaBr2 (aq) + H2SO4 (aq) → BaSO4 (s) + 2 HBr (aq)

Explanation:

This is a precipitation reaction: BaSO4 is the formed precipitate.

4 0
3 years ago
0.785 moles of N2,fill a balloon at 1.5 atm and 301 K.<br> What is the volume of the balloon?
Tcecarenko [31]

Answer:

V = 12.93 L

Explanation:

Given data:

Number of moles = 0.785 mol

Pressure of balloon = 1.5 atm

Temperature = 301 K

Volume of balloon = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will put the values.

V = nRT/P

V = 0.785 mol × 0.0821 atm.L/ mol.K × 301 K / 1.5 atm

V = 19.4 L /1.5

V = 12.93 L

7 0
2 years ago
What evidence do you see that a chemical reaction is taking place when you add hydrogen peroxide to potassium ioxide??
Yuri [45]

Answer:

Bubbling/Foaming

Heat is produced

Explanation:

A chemical reaction has occurred if

1. There is a change in colour

2. Formation of a precipitate

3. Formation of a gas

4. Change in temperature

5. Change of smell

In the reaction of hydrogen peroxide and potassium iodide, the solution quickly rises which shows the formation of gas. This means it is a chemical reaction.

The beaker/test tube/whatever you used should also become warm because it is an exothermic reaction. This means its a chemical reaction

3 0
3 years ago
How many electrons does H have with a -1 charge
pentagon [3]

Answer:The electron has a negative charge and the proton has a positive charge, and these charges work against each other to make the electromagnetic force that holds the entire atom together.

Explanation:

This is the answer

5 0
2 years ago
Other questions:
  • How many moles of nh3 can be produced from 13.5 mol of h2 and excess n2?
    9·1 answer
  • What is the symbol for resistance?
    13·1 answer
  • Select the single best answer. When 2-heptyne was treated with aqueous sulfuric acid containing mercury(II) sulfate, two product
    7·1 answer
  • There are two beakers that contain the same liquid substance at the same temperature. The larger beaker is 1,000ml and the small
    15·1 answer
  • Dependent variable definition
    9·2 answers
  • Which of the following geological features can form at a subduction zone?
    13·1 answer
  • 9. Calculate the frequency of light with a wavelength = 12 km. (kilo = 10')
    11·1 answer
  • Do you think the ingredients changing into a cake
    14·1 answer
  • Help, The question is down below
    14·2 answers
  • The number of cobalt atoms in 0.00103 mole of cobalt​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!