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
amm1812
3 years ago
5

The rate constant for the decomposition of n2o is 2.30 s−1. What is the half-life of the decomposition?

Chemistry
1 answer:
Alchen [17]3 years ago
3 0

Answer:

0.3 s.

Explanation:

Half-life of a first order reaction is defined as the the time taken for any fraction of the reaction to complete is independent of the initial concentration.

Half-life of a first order reaction, t° = 0.693/k

where,

t° = half-life of the reaction

k = rate constant

= 2.3 s^-1

Therefore,

t° = 0.693/2.3

= 0.30 s.

You might be interested in
Where can you find the information needed to change grams of a substance to moles?
vlada-n [284]
Oxidation numbers is the right answer 
7 0
3 years ago
In a chemical equation, the arrow
muminat

In a chemical equation, the arrow  


A. can be read as "yields" or "makes."  

B. always points toward the products.  

C. separates the products and reactants.  

D. all of these


all of these options are right.

7 0
3 years ago
Read 2 more answers
Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
Anuta_ua [19.1K]

NaH(s)+ H2O (l)=>NaOH(aq)+H2(g)

You want to calculate the mass of NaH, I assume.  Otherwise, the question isn't clear.  It simply says calculate the mass(??)

 

So, calculate the moles of H2 gas that satisfy the conditions of 982 ml at 28ºC and 765 torr.  But you must subtract the vapor pressure of water at 28º to get the actual pressure of the H2 gas.  So, the actual conditions are 982 ml (0.982 L) and 301 K and 765-28 = 737 torr.

PV = nRT

n = PV/RT = (737 torr)(0.982 L)/(62.4 L-torr/Kmol)(301 K)

n = 0.0385 moles H2

 

moles NaH needed = 0.0385 moles H2 x 1 mole NaH/mole H2 = 0.0385 moles NaH required

mass of NaH needed = 0.0385 moles x 24 g/mole = 0.925 g NaH

Brainliest Please :)

7 0
3 years ago
Read 2 more answers
Which of these is a product of photosynthesis and a requirement
arsen [322]

Answer:

glucose

Explanation:

7 0
2 years ago
Answer these questions based on 234.04360 as the atomic mass of thorium-234. The masses for the subatomic particles are given. R
Scilla [17]

How many protons does Thorium have? 90

How many neutrons does Thorium-234 have? 144

Calculate the mass defect for the isotope thorium-234 1.85864 amu

4 0
3 years ago
Read 2 more answers
Other questions:
  • If you have 0.56 moles of an ideal gas at 87 ° C and a pressure of 569 torr, what volume will the gas take up?
    5·2 answers
  • What observations would lead you to believe that the ink is actually a mixture?
    6·1 answer
  • Which pair of substances would most likely result in the production of a solid when reacting with a base?
    9·2 answers
  • Sulfur trioxide can react with atmospheric water vapor to form sulfuric acid that falls as acid rain. Calculate the mass in gram
    12·1 answer
  • Suppose you have a liquid solution containing two components, acetone and nonane. The boiling point of pure acetone is 56 C and
    13·1 answer
  • Determine how many moles of hydrogen are needed to produce 50 grams of ammonia.
    10·1 answer
  • Explain why a steel object continues to rust even after its outer layers have corroded.
    6·1 answer
  • Assuming that a sample of ethanol weighs 560 grams. What is the mass of hydrogen in grams for the sample?
    6·1 answer
  • An atom has a mass number of 9 and 5 neutrons. What is its atomic number?
    12·1 answer
  • Answer truthfully:))​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!