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
maria [59]
3 years ago
12

What is the rate constant of a first-order reaction that takes 5.50 minutes for the reactant concentration to drop to half of it

s initial value?
Chemistry
1 answer:
bulgar [2K]3 years ago
8 0
For a first order reaction, the half life is inversely proportional to the rate constant. 
The formula is
half life = ln(2)/k = 0.693/k
where k is the rate constant

t = 5.50 minutes

k = ln(2)/5.50 = 0.126 min^-1

Your rate constant is 0.126 min^-1.

You might be interested in
What are the answered to both 1 and 2
baherus [9]
By the lloks ofit you cant see it send a better picture
7 0
3 years ago
Difference between qualitative and quantitative data in chemistry
const2013 [10]
Quantitative data is numerical.
Qualitative data is non-numerical.
Hope this helps.
have a great day.
7 0
3 years ago
Sodium metal is added to a solution of magnesium chloride. Will a reaction occur? If so, what reaction will take place?
Black_prince [1.1K]
Yes, calcium chloride forms.
4 0
2 years ago
How do I calculate the standard enthalpy change for the following reaction at 25 °C ?
ladessa [460]
MgCl2(s) + H2O(l) → MgO(s) + 2 HCl(g) 

Using the standard enthalpies of formation given in the source below: 

(−601.24 kJ) + (2 x −92.30 kJ) − (−641.8 kJ) − (−285.8 kJ) = +141.76 kJ 
So: 

MgCl2(s) + H2O(l) → MgO(s) + 2 HCl(g), ΔH = +141.76 kJ
4 0
3 years ago
How many atoms of mercury are present in 3.2 cubic centimeters of liquid mercury? the density of mercury is 13.55 g/cc. answer i
jenyasd209 [6]

Answer:

             1.3 × 10²³ Atoms of Mercury  

Solution:

Step 1: Calculate Mass of Mercury using following formula,

                               Density  =  Mass ÷ Volume

Solving for Mass,

                               Mass  =  Density × Volume

Putting values,

                               Mass  =  13.55 g.cm⁻³ × 3.2 cm³                ∴ 1 cm³ = 1 cc

                               Mass  =  43.36 g

Step 2: Calculating number of Moles using following formula;

                               Moles  =  Mass ÷ M.mass

Putting values,

                               Moles  =  43.36 g ÷ 200.59 g.mol⁻¹

                               Moles  =  0.216 mol

Step 3: Calculating Number of Atoms using following formula;

                               Number of atoms  =  Moles × 6.022 ×10²³

Putting value of moles,

                               Number of Atoms  =  0.216 mol × 6.022 × 10²³

                              Number of Atoms  =  1.3 × 10²³ Atoms of Hg

7 0
2 years ago
Other questions:
  • Which words in the sentence are the adjective clause? Alessandra, whom everyone calls "Al," is the best tennis player on the tea
    13·1 answer
  • What volume of 2.5% (m/v) KOH can be prepared from 125 mL of a 5.0% KOH solution?
    10·1 answer
  • The six pollutants regulated under the Clear Air Act _____ between 1970 and 2001, while energy consumption increased 42 percent.
    5·2 answers
  • Balance the combustion reaction between octane and oxygen. 2C8H18 + O2 → CO2 + H2O
    12·2 answers
  • Which scientist was first to extensively develop the theory of continental drift?
    13·2 answers
  • Animals get energy from the food that they eat. However, when the molecules from the food enter your cells, how do the molecules
    15·1 answer
  • As the first five elements in Group 14 are considered in order from top to bottom, there are changes in both the
    7·1 answer
  • Help me pleaseeeeeeee​
    11·1 answer
  • C2O4-2 oxidation number of c​
    10·1 answer
  • Which of these best describe a flight that is approaching the speed of sound
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!