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
Pachacha [2.7K]
3 years ago
13

Hydrogen 3 has a half life of 12.32 years a sample of h-3 weighing 3.02 grams is left for 15.0 years what will the final weight

of H-3 sample be?
Chemistry
2 answers:
yawa3891 [41]3 years ago
8 0

Answer:

The final mass of sample is 1.3 g.

Explanation:

Given data:

Half life of H-3 = 12.32 years

Amount left for 15.0 years = 3.02 g

Final amount = ?

Solution:

First all we will calculate the decay constant.

t₁/₂ = ln² /k

t₁/₂ =12.32 years

12.32 y =  ln² /k

k = ln²/12.32 y

k = 0.05626 y⁻¹

Now we will find the original amount:

ln (A°/A) = Kt

ln (3.02 g/ A) = 0.05626 y⁻¹ × 15.0 y

ln (3.02 g/ A) = 0.8439

3.02 g/ A = e⁰°⁸⁴³⁹

3.02 g/ A = 2.33

A = 3.02 g/ 2.33

A = 1.3 g

The final mass of sample is 1.3 g.

olga_2 [115]3 years ago
3 0

Answer:

The anwer is 1.30 in plato

Explanation:

You might be interested in
An independent variable is....
Irina18 [472]

Answer:

B - What we change

Explanation:

Dependent Variable - What we measure

Control Variable - what stays the same

Conclusion - what we conclude

<em>Hope</em><em> </em><em>this</em><em> </em><em>can</em><em> </em><em>Help</em><em>!</em>

<em>:</em><em>D</em>

5 0
3 years ago
Molten lava from a volcano includes pockets of gases. A sample of lava contains 0.75 L of water vapour at 1170°C. What volume wi
Lesechka [4]

Charle's law states the relationship between the temperature and the volume of the gas. The final volume occupied at 120 °C is 0.20 L.

<h3>What is Charle's law?</h3>

Charle's law is the ideal gas law that states the relationship between the volume of the gas occupied at a temperature.

Given,

V1 = 0.75 L

T1 = 1443 .15 K

T2 = 393.15 K

The final volume is calculated as:

(V1 × T2) ÷ T1

= 0.75 × 393.15 ÷ 1443.15

= 0.20 L

Therefore, 0.20 L is the final volume.

Learn more about Charle's law here:

brainly.com/question/14517633

#SPJ1

4 0
2 years ago
What two categories are used in classifying particulate matter?
Allushta [10]
<span>The two categories for classifying particulate matter are through analysis of the intensive and extensive properties. Intensive properties are independent properties that can be measured independent of the amount of matter while extensive properties are measured dependent on the amount.</span>
3 0
3 years ago
Meg goes swimming on a hot afternoon. When she comes out of the pool, her foot senses that the pavement is unbearably hot. Suppo
MA_775_DIABLO [31]
She needs to do more observations to find out what makes her foot burn before she analyzes the data or does anything else, so she should make observations next.
4 0
3 years ago
Read 2 more answers
MARKING BRAINLIEST!!!<br><br>Complete a combining ratio of Lithium and Oxygen.
cluponka [151]

Li₂O

Explanation:

Elements or ions exchange their combining powers or their simplest whole number ratio during the formation of a chemical formulae of compounds.  

  The combining power of lithium is 1

                                           Oxygen is 2

                                    Lithium                                       Oxygen

Combining

power                               1                                                  2

Exchange of

valencies                          2                                                  1

   

    Molecular formula of the compound gives Li₂O

Learn more:

Molecular formula brainly.com/question/5537295

#learnwithBrainly

7 0
4 years ago
Other questions:
  • The ka value for acetic acid, ch3cooh(aq), is 1.8Ã 10â5 m. calculate the ph of a 1.40 m acetic acid solution.
    10·1 answer
  • HELPPP
    14·1 answer
  • How many milligrams of CO exist in 12000 liters of air with 10 ppm of CO?
    13·1 answer
  • Silver nitrate reacts with calcium to make calcium nitrate and silver. The reaction is exothermic and produces 18.7 kJ/mol of en
    13·1 answer
  • PLZ HELP ME ANSWER THIS!!!
    6·2 answers
  • Aluminum reacts with excess copper(II) sulfate according to the unbalanced reaction
    8·1 answer
  • Why is the reaction of Iron and hydrochloric acid slow ​
    12·2 answers
  • 0.41g of neon is held in a 200. mL container at 11 °C. Calculate the pressure in atm.
    10·1 answer
  • What has to be true in order for a single replacement reaction to happen?
    15·1 answer
  • Hydrogen and iodine vapour exist in equilibrium with hydrogen iodide at a constant temperature in a gas syringe.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!