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
AfilCa [17]
2 years ago
10

(20 POINTS) I NEED IT TODAY!

Chemistry
1 answer:
Dafna11 [192]2 years ago
5 0
Please stop scamming people it clearly says it’s ten points
You might be interested in
2.In a titration, 25.00 cm3 of a solution of hydrochloric acid reacted with 18.40 cm3 of sodium hydroxide solution of concentrat
telo118 [61]

Answer:

0.11mol/dm³

Explanation:

The reaction expression is given as:

             HCl   +  NaOH  →  NaCl + H₂O

Volume of acid  = 25cm³  = 0.025dm³

Volume of base  = 18.4cm³ = 0.0184dm³

Concentration of base  = 0.15mol/dm³

Solution:

The concentration of hydrochloric acid = ?

 To solve this problem, let us first find the number of moles of the base;

 Number of moles  = concentration x volume

 Number of moles  = 0.15mol/dm³ x 0.0184dm³  = 0.00276mol

From the balanced reaction equation;

          1 mole of NaOH will combine with 1 mole of HCl

Therefore,  0.00276mol of the base will combine with  0.00276mol of HCl

 So;

  Concentration of acid  = \frac{number of moles }{volume}   = \frac{ 0.00276}{0.025}   = 0.11mol/dm³

4 0
2 years ago
Aluminum has a face-centered cubic unit cell. How many atoms of Al are present in each unit cell
Serjik [45]

Answer:4

Explanation:

As shown in the image attached, a face-centred cubic structure has 8 atoms at the corners and 6 face center atoms.

Each corner atom contributes to eight cell, so per unit cell 1/8 ×8 =1atom

Face center atoms contributes to two unit cells 1/2 × 6=3atoms

Total atoms =3+1=4atoms

Therefore the atoms in Al FCC per unit cell is 4

7 0
3 years ago
Which statement best describes how today’s scientific community views light?
arlik [135]
ITS A SIMPLE.............................
FuFu Boys
5 0
3 years ago
Read 2 more answers
14. What volume (mL) of water do I need to add to 425
Reptile [31]

Answer:

212.5 mL

both the original and the diluted solution have 0.765 moles of KCl

Explanation:

c1V1 = c2V2

V2 = c1V1/c2 = (1.8 M×425 mL)/1.2 M = 637.5 mL

(637.5 - 425) mL = 212.5 mL

n = (1.8 mol/L)(0.425 L) = 0.765 moles of KCl

since it's a dilution, the diluted solution has the same number of moles as the original solution, 0.765 moles of KCl

7 0
3 years ago
What forms when iron-53 decays?
amm1812
It depends on the type of decay that is taking place if its a β+ it will decay into Mn-52 β- decays into Co-59
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following statements is not correct?
    6·1 answer
  • 7 seres vivos ejemplo
    9·1 answer
  • What is the mass of 1.72 moles of BaSO4?
    14·1 answer
  • How does our understanding of genetics influence psychological research
    15·1 answer
  • Explain why two thin sweaters feel warmer then one thick sweater​
    10·1 answer
  • explain why the offsrping with Gg genes for pod color look the same as a pea plant with GG genes for pod color
    11·1 answer
  • An object's _______ depends on gravity, but an object's _______ does not. A. volume; density B. mass; weight C. weight; mass D.
    7·2 answers
  • The formula for binary ionic compound formed between cesium and fluorine
    12·1 answer
  • I need help lol, I’ll brainlist u!
    9·1 answer
  • Which of these is not a structural adaptation? A) Horns B) Thick white fur C) Seasonal migration D) A long beak
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!