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
Blizzard [7]
3 years ago
8

Hydrofluoric acid (HF) can be prepared according to the following equation:

Chemistry
2 answers:
White raven [17]3 years ago
7 0

Answer:

The Hf is 34.78

Explanation:

first put it to moles with the grams times 1mol/ the atomic mass of the element or compound

Artemon [7]3 years ago
3 0

Given the balanced equation:

( Reaction type : double replacement)

CaF2 + H2SO4 → CaSO4 + 2HFI

We can determine the number of grams prepared from the quantity of 75.0 H2SO4, and 63.0g of CaF2 by converting these grams to moles per substance.

This can be done by evaluating the atomic mass of each element of the substance, and totaling it to find the molecular mass.

For H2SO4 or hydrogen sulfate it's molecular mass is the sum of the quantity of atomic mass per element. H×2 + S×1 + O×4 = ≈1.01×2 + ≈32.06×1 + ≈16×4 = 2.02 + 32.06 + 64 = 98.08 u (Dalton's or Da) or g / mol.

For CaF2 or calcium fluoride, it's molecular mass adds 1 atomic mass of calcium and 2 atomic masses of fluoride due to the number of atoms.

Ca×1 + F×2 = ≈40.07×1 + ≈19×2 = 40.08 + 38 = 78.07 u (Da or Dalton's) or g / mol.

You might be interested in
Both hydrogen sulfide (H2S) and ammonia (NH3)
faust18 [17]

Answer: The molar mass of H2S is greater than the molar mass of NH3, making the velocity and effusion rate of NH3 particles faster.

Effusion rate is inversely proportional to molar mass.

NH3 will have a higher average molecule velocity, so it will diffuse faster and will reach the other side of the room more quickly.

Explanation: change up your response a bit

4 0
3 years ago
Read 2 more answers
A negative △H means an exothermic reaction.<br><br> True<br> False
Nostrana [21]
Your answer is False I think
6 0
3 years ago
A disturbance in matter that carries energy from one place to another is called
siniylev [52]
The answer you're looking for is: a wave.
6 0
3 years ago
Review the equation below.
olchik [2.2K]

2KClO3 --> 2KCl + 3O2

3 moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose.

3 0
3 years ago
Read 2 more answers
Suppose that when you wake up in the morning, you are very hungry. You go to the refrigerator and remove an egg. On the way to t
Hunter-Best [27]
4- when you cook the egg because when you coook the egg it is no longer raw and you cant re do it so there for it is a chemical chabge
4 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose you are a food chemist working for a company that makes and manufactures soda. Your job is to create a new soft drink wi
    14·1 answer
  • As a liquid boils at its normal boiling point, it's temperature..1) remains the same2) increases 3) decreases
    15·1 answer
  • Suppose the concentration of the standard stock solution is 50.04 ppm and that you delivered 4.60 mL of this standard stock solu
    9·1 answer
  • 1.00 mL of a 250.0 µM solution of KCl is diluted to 50.0 mL. What is concentration of this solution?
    12·1 answer
  • Which element is oxidized and which is reduced in the following reactions? (Part A) N2(g) + 3H2(g) →2NH3(g) Express your answers
    13·2 answers
  • Which of the following metals is soluble in water with S2-?
    15·1 answer
  • People can hear ultrasound easily.<br><br> A. True <br> B. False
    7·1 answer
  • Need help with this problem asap ​
    11·1 answer
  • (there are 2 quetions) how is heat being transfered in:
    14·2 answers
  • Which part of the periodic table would contain an element with a partially filled f sublevel?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!