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
Alexxandr [17]
3 years ago
14

What was the half-life of a new isotope?

Chemistry
1 answer:
REY [17]3 years ago
8 0
The half-life of any substance is the amount of time taken for half of the original quantity of the substance present to decay. The half-life of a radioactive substance is characteristic to itself, and it may be millions of years long or it may be just a few seconds.

In order to determine the half-life of a substance, we simply use:
t(1/2) = ln(2) / λ

Where λ is the decay constant for that specific isotope.
You might be interested in
When 4.41g of phosphoric acid (H3PO4) react with 9.25g of barium hydroxide, water and insoluble barium phosphate form. [T/I-7] a
AnnZ [28]

Answer:

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

Explanation:

Let's consider the unbalanced equation that occurs when phosphoric acid reacts with barium hydroxide to form water and barium phosphate. This is a neutralization reaction.

H₃PO₄(aq) + Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

We will balance it using the trial and error method.

First, we will balance Ba atoms by multiplying Ba(OH)₂ by 3 and P atoms by multiplying H₃PO₄ by 2.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

Finally, we will get the balanced equation by multiplying H₂O by 6.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

3 0
3 years ago
40 g of CaCO3 is how many moles of CaCO3?<br> 10 moles<br> 0.4 moles<br> 40 moles<br> 100 moles
AleksandrR [38]

Answer:

0.4 moles

Explanation:

To convert between moles and grams you need the molar mass of the compound. The molar mass of of CaCO3 is 100.09g/mol. You use that as the unit converter.

40gCaCO3* 1mol CaCO3/100.09gCaCO3 = 0.399640 mol CaCO3

This rounds to 0.4 moles CaCO3

8 0
3 years ago
Which is a chemical property of iron
Whitepunk [10]

a chemical property of iron is the ability to change it, hammer it, roll it, shape it etc

5 0
3 years ago
Read 2 more answers
Is weathering long term or short term and why​
Marrrta [24]
Long term because if you leave something out to be weathered then it can’t be unweathered because of the drastic change of the object.
4 0
3 years ago
What is the study of acid-base chemistry called in the environment
Charra [1.4K]

Answer:

An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.

8 0
3 years ago
Other questions:
  • Select all the discoveries that J. J. Thomson is credited with making.
    6·2 answers
  • Explain the difference between a body fossil and a trace fossil. Give one example of each.
    13·1 answer
  • What volume of 1.25M HCl would be required to prepare 180 mL of a 0.500M HCl solution? A. 2.2 x 103 mL B. 450 mL C. 72 mL D. 0.0
    9·1 answer
  • Sodium metal reacts with aluminum chloride to produce sodium chloride and aluminum. The balanced reaction is: 3 Na(s) + AlCl3(aq
    9·1 answer
  • I need number 5,6 please thanks
    6·1 answer
  • 0.007 decigrams = ? micrograms
    7·1 answer
  • Put two books on top of your wooden block and calculate the sliding force of friction. Write your answer below. Sliding force of
    13·1 answer
  • balance by oxidation number method&lt;br /&gt;KMnO4 + Na2O₂ + H2 so4 ko2so4 +&lt;br /&gt;Mosou4 + Na2so&lt;br /&gt;4 + O2 + H₂O​
    7·1 answer
  • Some animals that live in extremely cold environments protect themselves from freezing by increasing the molality of certain che
    8·1 answer
  • What is the parent chain of the following compound? a. hexane b. heptane c. octane d. nonane e. decane
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!