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
nevsk [136]
3 years ago
13

What is the mass of an original 5.60-gram sample of iron-53 that remains unchanged after 25.53 minutes?

Chemistry
1 answer:
olga_2 [115]3 years ago
4 0
Answer is 0.7 g

Reason: Given: mass of Fe = 5.60 gWe know that, half life of Fe-53 = t1/2 (Fe-53) = 8.51 min.
Thus, after 25.53 mins, number of half life passed = 25.53/8.51= 3

Now, Amount left after first half life = 5.60g/2 = 2.80 g
Amount left after second half life = 2.80g/2 = 1.40 g
Amount left after third half-life = 1.40g/2 = 0.7g.
You might be interested in
Pb + Fe(SO4) =Pb(SO4) + Fe what type of reaction is this ?
VikaD [51]

Answer:

Single replacement

Explanation:

3 0
2 years ago
In the Reaction CuCl2 + 2 NaNO3 —> Cu(NO3)2 + 2 Naci
Lunna [17]

Explanation:

The molar mass of the compounds are incorrect

5 0
2 years ago
An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a(n)
ss7ja [257]
The answer is C: Valence electron
3 0
3 years ago
Please help with this question ;/
aev [14]
The link above is a hacker
8 0
2 years ago
A sealed helium balloon with an internal pressure of 1.00 atm and a volume of 4.50 L at 293 K is moved. What volume will the bal
bixtya [17]

Answer:

6.48 L

Explanation:

From the question,

Applying

PV/T = P'V'/T'......................... Equation 1

P = initial pressure of the helium balloon, V =  Initial volume of the balloon, T = Initial temperature of the balloon, P' = Final pressure of the balloon, T' = Final temperature of the balloon, V' = Final volume of the balloon.

make V' the subject of the equation

V' = PVT'/P'T......................... Equation 2

Given: P = 1 atm, V = 4.5 L, T' = 253 K, T= 293 K, P' = 0.6 atm

Substitute these values into equation 2

V' = (4.5×1×253)/(0.6×293)

V' = 1138.5/175.8

V' = 6.48 L

8 0
2 years ago
Other questions:
  • When there is less visible land along a coastline, it is because of what kind of coastline?
    11·2 answers
  • Which of these changes would cause a decrease in the pressure of a contained gas?
    12·1 answer
  • Which of the following is and example of a chemical change
    13·1 answer
  • Gaseous methane (CH_4) will react with gaseous oxygen (O_2) to produce gaseous carbon dioxide (CO_2) and gaseous water (H_2O). S
    7·1 answer
  • Bob the chemist ran a TLC plate of his product, but the spot would not move off the baseline. The eluent he used consisted of a
    15·1 answer
  • Why diamond has a very high melting point than aluminium??
    11·1 answer
  • Hi i am from India which country are you from​
    9·2 answers
  • A change of state does not affect an object's what?
    14·1 answer
  • The structure of an atom is
    15·1 answer
  • Which of the following statements is false?<br>​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!