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
LenaWriter [7]
2 years ago
10

You start out with 800 moles of a radioactive substance. After 24 hours, 100 moles remain. What is the half-life of the substanc

e in hours?
Question 1 options:

12 hours


4 hours


8 hours


6 hours
Chemistry
2 answers:
steposvetlana [31]2 years ago
7 0

Answer:

The correct answer would be 8 hours

Explanation:

Ludmilka [50]2 years ago
4 0

Answer:

12 hours

Explanation:

It would take 12 hours for half of the substance to remain

You might be interested in
The only nonmetal in group 1
r-ruslan [8.4K]

Answer:

Hydrogen

Explanation:

Hydrogen is the only non metal in group on of the period table of elements.

3 0
3 years ago
Balance the following equations
Shtirlitz [24]
2K + Cl₂ ⇒ 2KCl

2Ca + O₂ ⇒ 2CaO
6 0
4 years ago
Given the reaction at equilibrium: 2H2(g) + O2(g) ↔ 2H2O(g) + energy Which concentration changes occur when the temperature of t
ivanzaharov [21]
Both the H2 and O2 increases!
4 0
3 years ago
If a body travel 60m on a straight line in 20 seconds. Find its velocity.​
g100num [7]

Answer:

v = distance/time = 60m/20s = 3 m/s

4 0
3 years ago
Hydrogen gas and nitrogen gas react to form ammonia gas. What volume of ammonia would be produced by this reaction if 5.53 mL of
lina2011 [118]

Answer:

5.53 mL of hydrogen will produce 3.6867 mL of Ammonia

Explanation:

The complete balance equation for the given reaction is

N2 + 3H2 --> 2 NH3

Thus, 3 moles of hydrogen produces 2 moles of NH3

Hence, the volume of ammonia produced = 5.53 * (2/3) = 3.6867 mL

Hence, 5.53 mL of hydrogen will produce 3.6867 mL of Ammonia

6 0
3 years ago
Other questions:
  • What is the original source of energy that is stored in the food that animals eat?
    11·1 answer
  • Is aluminum homogeneous or heterogeneous?
    8·1 answer
  • Calculate the moles and grams of solute in each solution. D. 2.0 L of 0.30M Na2SO4. I already have A, B, and C. Thanks!
    13·2 answers
  • "You measure 48.9 mL of a solution of sulfuric acid with an unknown concentration, and carefully titrate this solution using a 1
    5·1 answer
  • Is layers of sediment forming at the bottom of the ocean erosion?
    9·1 answer
  • Which structural formula does not represent benzene? a hexagon with nothing drawn inside it a hexagon with a dotted circle drawn
    8·2 answers
  • Cual es el propósito de la línea escalonada gruesa de la tabla periódica
    11·1 answer
  • Temperature and kinetic energy have a relationship.
    15·2 answers
  • Explain what it means to have a positive percent error value and a negative percent value.
    12·1 answer
  • ______________ is a durable material and is widely used for casting, which is a process by which the melted material is poured i
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!