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
BARSIC [14]
2 years ago
12

A sample is in the second half-life. What percent of the sample is stable at this point?

Chemistry
1 answer:
Kruka [31]2 years ago
8 0

Answer:

75%

Explanation:

on edg :)

You might be interested in
onsider the reaction, NO2(g) + CO(g) → NO(g) + CO2(g), for which the rate law has been determined to be: Rate = k[NO2]2[CO]. Whi
nlexa [21]

Answer:

The correct answer is option D.

Explanation:

Rate of the reaction is a change in the concentration of any one of the reactant or product per unit time.

NO_2(g) + CO(g)\rightarrow NO(g) + CO_2(g)

Rate of the reaction:

R=-\frac{1}{1}\times \frac{d[NO_2]}{dt}=-\frac{1}{1}\times \frac{d[CO]}{dt}

Rate of decrease in nitrogen dioxide concentration is equal to the rate of decrease in carbon monoxide.

Given rate expression of the reaction:

R = k[NO2]^2[CO]

Rate of the reaction on doubling concentration of nitrogen dioxide and carbon monoxide : R'

R'=k(2\times [NO_2])^2(2\times [CO])=8\times k[NO2]^2[CO]=8R

Doubling the concentrations of nitrogen dioxide and carbon monoxide simultaneously will increase the rate of the reaction by a factor of eight.

Hence, none of the given statements are true.

6 0
3 years ago
Read 2 more answers
Write a question you have about Titan or about methane that could help you determine what happened to the lake
Sergeeva-Olga [200]

Answer: what would swimming in mathane lake on titan feel like.

Explanation:

8 0
3 years ago
Question 12 (4 points)
kozerog [31]

Answer:

100grams

Explanation:

law of conservation of mass

if the chemical or whatever, quantity is given then it stay the same in the beginning and the end. Just add them in the end and if something is missing that means you have done something wrong i am just telling for experiment

6 0
2 years ago
Topic: Room Preparation Select one physician assisted examination or procedure, can be routine or surgical. Create a checklist o
kvasek [131]
I don't know the answer. Can I ask your help to answer that question? pls.
8 0
3 years ago
An endothermic reaction occurs when water and ammonium nitrate are combined. Which of the following statements correctly
rosijanka [135]

Answer:

C.Energy is absorbed because the products have more chemical energy than the reactants.

Explanation:

7 0
2 years ago
Other questions:
  • The area of the gold electrodes on the quartz crystal microbalance at the opening of Chapter 2 is 3.3 mm^2. One gold electrode i
    13·1 answer
  • A(n) ____ is an abbreviation for the name of an element and has either one or two letters.
    6·1 answer
  • Why is it important that acids and bases have certain naming rules? Why shouldn't we just call them whatever we want?​
    7·2 answers
  • Why must sample spots be above the solvent in paper chromatography
    11·1 answer
  • Determine the moles of NH3 that can form from 70.0 grams N2.
    9·1 answer
  • An electrochemical cell is constructed using electrodes with the following half-cell reactions.
    8·1 answer
  • Substance X has a fixed volume, and the attraction between its particles is strong. Substance Y has widely spread out particles
    6·2 answers
  • if 15.8 grams of sodium react with excess water, how many liters of hydrogen gas can be produced at 303 Kelvin at 1.30 atmospher
    11·1 answer
  • 5. A box with a volume of 22.4 L contains 1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C. Which of the following statements
    13·1 answer
  • How many formula units are there in 212 grams of mgCl2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!