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
LuckyWell [14K]
3 years ago
15

A rock from the moon contains 12.5 percent of the potassium-40 it began with. how old is the rock

Chemistry
1 answer:
My name is Ann [436]3 years ago
4 0
1.25 billion years ago,2.5 billion years ago, 3.75 years ago,and 5 billion years ago.
You might be interested in
Write a balanced chemical equation for the standard formation reaction of solid sodium hydrogen carbonate Write a balanced chemi
4vir4ik [10]

Answer:

Na(s) + C(s, graphite) + 1/2 H₂(g) + 3/2 O₂(g) → NaHCO₃(s)

Explanation:

The standard formation reaction is the synthesis of 1 mole of a substance from its elements in their most stables forms under standard conditions. The balanced chemical equation is:

Na(s) + C(s, graphite) + 1/2 H₂(g) + 3/2 O₂(g) → NaHCO₃(s)

8 0
3 years ago
Which mixture can be separated based on differences in particle size of the components?
Aleksandr [31]
Heterogenous mixtures can separates due to differences in size of components
7 0
3 years ago
Help me Guys please I need help with this My step sister is here and she's a demon and annoying Can I have good ideas what to do
Nesterboy [21]

Answer:

Lock her in the bathroom

Explanation:

3 0
2 years ago
Read 2 more answers
How many atoms are in one mole of co2?
BigorU [14]

There are 3 atoms in 1 molecule of Co2.

6 0
3 years ago
Read 2 more answers
Where are elements that form molecules of two of the same atoms commonly found on the periodic table?
Sveta_85 [38]
Elements that form diatomic molecules, or molecules of two atoms each, are commonly found on the right side of the periodic table.
6 0
2 years ago
Read 2 more answers
Other questions:
  • Which part of the periodic table contains elements with the greatest metallic properties?
    11·1 answer
  • Explain why the population of trout might increase if the population of frogs decreased
    5·1 answer
  • Will NaBr, CO2, Ca3(PO4), or KZS raise a liquid's boiling point the most when
    5·1 answer
  • Find the natural abundance of Si-30.
    12·1 answer
  • Of the atoms below, __________ is the most electronegative.
    15·1 answer
  • The reaction between hydrogen gas and chlorine gas produces hydrogen chloride according to the following equation: H2(g) + Cl2(g
    9·1 answer
  • How does an object look when it is viewed through an opaque object ​
    8·1 answer
  • What is gold atomic number
    11·1 answer
  • Which of the following diatomic gases has the shortest bond between its two atoms?
    6·2 answers
  • Chemical properties can be used to
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!