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
Genrish500 [490]
3 years ago
15

How many grams of co are in 125 ml of a 0.25 m solution? 0.87 g 1.1 g 14 g 880 g?

Chemistry
1 answer:
erma4kov [3.2K]3 years ago
6 0
   The number of  grams of Co that  are  in 125 Ml  of  0.25 M solution  is  0.87 grams                             

           calculation
find the number of moles
 moles= molarity  x  volume in liters
volume in liters =  125/1000 = 0.125 L
molarity =  0.25 M

moles  is therefore =  0.125 x 0.25=0.0313 moles
 mass  = moles   x molar mass

molar mass of Co= 12 +16  =28g/mol

mass   is therefore =  28 g/mol  x0.0313 moles= 0.87 grams
You might be interested in
Write a balanced equation describing each of the following chemical reactions:
shusha [124]

Explanation:

( a )

The decomposition reaction of KClO₃ to form diatomic oxygen gas is the following way -

2  KClO₃ ( s )  -------> 2 KCl ( s ) +  3O₂ ( g )

( b )

The reaction of solid metal of Aluminum with Iodine in the following way -

2 Al ( s )  +  3 I₂ ( s ) ------> Al₂I₆ ( s )

( c )

The reaction of sodium chloride with aqueous sulfuric acid is as follow -

2 NaCl ( s )   +  H₂SO₄ ( aq ) ------>  2 HCl ( g ) +  Na₂SO₄ ( aq )

( d )

The reaction of phosphoric acid with potassium hydroxide , in the following way -

H₃PO₄ ( aq ) + KOH ( aq ) ------> KH₂PO₄ ( aq ) + H₂O ( l )

8 0
3 years ago
What type of reaction is depicted by this equation?
const2013 [10]
It is a decomposition reactions
5 0
3 years ago
Define 'hellowin '<br>is it celebrated ?​
Thepotemich [5.8K]

Answer:

The word "Halloween" comes from All Hallows' Eve and means "hallowed evening."

Halloween's origins can be traced back to the ancient Celtic festival known as Samhain, which was held on November 1 in contemporary calendars. It was believed that on that day, the souls of the dead returned to their homes, so people dressed in costumes and lit bonfires to ward off spirits.

Explanation:

4 0
3 years ago
Read 2 more answers
238/93Np → 0/-1e + ?
diamong [38]

Answer:

looking for some pts

Explanation:

no problem

3 0
3 years ago
T or F: The mass of an answer is so small it is rounded to 0 amu
Nutka1998 [239]
True because it doesn’t count as a full number
6 0
3 years ago
Other questions:
  • A 0.465 g sample of an unknown compound occupies 245 mL at 298 K and 1.22 atm. What is the molar mass of the unknown compound?
    7·1 answer
  • Given the following reaction: 3D(g) + E(g) + 2F(g) → 5G(g) + 4H(g)
    6·1 answer
  • You are given an unknown type of clothing dye. How could you use the procedures in this lab to see if this dye is a mixture? Ple
    12·1 answer
  • The cells of multicellular organisms, like you and me, become specialized for particular tasks and communicate with one another
    9·1 answer
  • The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occu
    14·1 answer
  • Plz Answer all three questions thx ;)
    10·1 answer
  • Does plasma have high or low kinetic energy?
    10·1 answer
  • How many hydrogen atoms are contained in 0.40 mL of water, given that the density of water is 1 g/ml?
    6·1 answer
  • What is obesity and hemoglobin?​
    15·1 answer
  • Which two observers would be experiencing the same apparent solar time?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!