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
oee [108]
2 years ago
6

How much of a 0.74mg sample of uranium-235 will remain after 2.8x10^9

Chemistry
1 answer:
ankoles [38]2 years ago
5 0
Of Uranium-235 remains after 2.8 x 10^9 years, what was the original mass of the sample of Uranium-235? The half-life of Uranium-235 is 7.0 x 10^8 years. Uranium-232 has a half life of 68.8 years.
You might be interested in
Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once.
andre [41]

Answer:

fefeff

Explanation:

wdwdwfefe

5 0
3 years ago
How many cups are in a pound of flour?
Andrej [43]
There are <span>4 1/2 cups of flour in a pound of flour. </span>
8 0
3 years ago
What role does the activation energy play in chemical reactions?
Tatiana [17]
The activation energy is the minimum amount of energy that particles must have in order for them to participate in a chemical reaction. During chemical reactions bonds are broken and formed. Particles must collide with sufficient energy in order for the initial bonds to be broken. The activation energy is that that initial minimum energy that the particles can have in order for the bonds to be broken. Stronger bonds would require more energy to be broken and therefore the activation energy for such would be higher.
7 0
3 years ago
What are properties of a base
Ilya [14]
Maybe this we’ll help?

5 0
2 years ago
Read 2 more answers
Electrons are attracted to ________________. protons other electrons neutrons all the particles
rjkz [21]
Protons .because electron has negative charge and proton has positive charge.
6 0
3 years ago
Other questions:
  • The —— of melting is freezing
    13·2 answers
  • What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?
    10·1 answer
  • A solution is prepared by dissolving 7.14 g KClO in 318 g of water. What is the molality of this solution? You do not need to sh
    6·1 answer
  • 18 g of argon occupy 750 ml at a particular temperature and pressure. How many grams of methane would occupy the same volume at
    8·1 answer
  • Magnesium oxide is a binary ionic compound. From its formula, MgO, how do you know that Mg is the metal?
    15·2 answers
  • Using the brønsted theory, classify the compounds as either an acid or a base
    13·1 answer
  • How much fencing material does fiona need in meters?
    7·1 answer
  • 2. Scientist use ________ to measure the distance between stars.
    15·1 answer
  • 22.17 grams of Mercury (II) Nitrate, Hg(NO3)2, reacts with an excess of Potassium, K.
    9·1 answer
  • Adding enough _____ to a system can change the substance in a system
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!