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
mote1985 [20]
3 years ago
13

Theoretically, how many moles of carbonic acid will be produced by 3.00 g sample of NaHCO3?

Chemistry
1 answer:
Kryger [21]3 years ago
7 0
NaHCO3 = 22.99 + 1.008 + 16(3) = 83.99 g/mol 

Na = 22.99g/83.99 g weight of molecule =.2727 or 27.27% 

3.0 g* .2727 = 0.8211 grams of sodium in sample of NaHCO3 

0.8211 grams Na + 1.266 grams Cl = 2.087 grams
You might be interested in
A 0.56 M solution of AlCl₃ is determined to have a concentration of particles of 1.79 M. What is the van't Hoff factor for AlCl₃
Crank

Answer:

Van't Hoff factor for AlCl₃ = 3 (Approx)

Explanation:

Given:

Number of observed particular = 1.79 M

Number of theoretical particular = 0.56 M

Find:

Van't Hoff factor for AlCl₃

Computation:

Van't Hoff factor for AlCl₃ = Number of observed particular / Number of theoretical particular

Van't Hoff factor for AlCl₃ = 1.79 M / 0.56 M

Van't Hoff factor for AlCl₃ = 3.19

Van't Hoff factor for AlCl₃ = 3 (Approx)

3 0
3 years ago
An isotope has a half-life of 10 minutes. after 20 minutes, what percentage of the original nuclei remain?
Elena-2011 [213]
To solve this, we can use two equations.
t1/2 = ln 2 / λ = 0.693 / λ  
   
where, t1/2 is half-life and λ is the decay constant.

t1/2 = 10 min = 0.693 / λ

Hence, λ = 0.693 / 10 min              -         (1)

Nt = Nο e∧(-λt)    
                
Nt = amount of atoms at t =t time
Nο= initial amount of atoms
t = time taken

by rearranging the equation,
Nt/Nο = e∧(-λt)                  -  (2)

From (1) and (2),

Nt/Nο = e∧(-(0.693 / 10 min) x 20 min) 
Nt/Nο = 0.2500

Percentage of remaining nuclei = (nuclei at t time / initial nuclei) x 100%
                                                     
= (Nt/Nο ) x 100%
                                                      = 0.2500 x 100%
                                                      = 25.00%

Hence, Percentage of remaining nuclei is 25.00%
6 0
3 years ago
Identify the element that cannot participate in nuclear fission reactions. (Hint: Think about the size of the atom.)
chubhunter [2.5K]
A or C I’m pretty sure
8 0
3 years ago
What is the product of the reaction between arsenic and oxygen
Ivan

Answer:

d

Explanation:

As + O2 -------->as2o3

5 0
3 years ago
Read 2 more answers
If you rip a dollar bill in half is it qualified as 50 cents
omeli [17]
Yes, 50 pennies plus 50 pennies equals 100 pennies minus 50pennies equals 50 pennies.
7 0
3 years ago
Other questions:
  • What is the rate constant of a reaction if rate = 0.2 (mol/L)/s, [A] and [B] are each 3 M, m = 1, and n = 2?
    10·2 answers
  • He concentration of pb2+ in a commercially available standard solution is 1.00 mg/ml. what volume of this solution should be dil
    13·1 answer
  • Which of the following atoms:
    15·1 answer
  • Consider the molar solubility of SrCO3 in 0.10 M Sr(NO3)2 versus in pure water. Ksp SrCO3 = 5.4 x 10-10 Which statement is true?
    11·1 answer
  • You have a pot of pasta boiling in water on the stove. Which method will you use to separate the mixture of pasta and water?
    12·1 answer
  • Which statement is true with respect to the investigation?
    12·1 answer
  • The metal sample suspected of being aluminum is warmed and then submerged into water, which is near room temperature. The final
    14·1 answer
  • What is an accurate description of a period in the periodic table
    9·2 answers
  • THIS IS URGENT PLEASE HELPPPPPP (NO LINKS PLEASE)
    5·1 answer
  • Which type of energy is the tree changing the light energy into?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!