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
Natali5045456 [20]
3 years ago
15

How long will it take for a 40.0 gram sample of I-131 (half-life = 8.040 days) to decay to 1/100 its original mass? ( PLEASE WIT

H DETAILS)
Chemistry
1 answer:
masya89 [10]3 years ago
4 0
Idk how long will it
You might be interested in
Electromagnetic energy that travels in transverse waves which produces visible light is
Lubov Fominskaja [6]
Nuclear is the answer
8 0
2 years ago
How do purple stem plants use there energy
tatuchka [14]
Purple stem plants can be formed by genetics, they use their energy slightly different from other plants, they use less energy, but that may also be because of bad nutrition, and because they may be hungry for nutrients.
5 0
2 years ago
Read 2 more answers
Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of
KengaRu [80]

Answer:

i think it will increase the rate of chemical reaction as pressure is directly proportional to the reactivity of gas.

8 0
3 years ago
Read 2 more answers
Help <br> whoever answers all gets marked brainliest
Lelechka [254]

#1

  • See H and C have shared their electrons so it's Covalent bonding

#2

Yes here we can see the dots and crosses clearly.

  • Dot and crosses digram

#3

It's Methane or CH_4

  • 4 single bonds

#4

There is no double bond

6 0
2 years ago
Read 2 more answers
A 1.20-L container contains 1.10 g of an unknown gas at STP. What is the molecular weight of the unknown gas?
SOVA2 [1]

Answer:

M = 20.5 g/mol

Explanation:

Given data:

Volume of gas = 1.20 L

Mass of gas = 1.10 g

Temperature and pressure = standard

Solution:

First of all we will calculate the density.

Formula:

d = mass/ volume

d = 1.10 g/ 1.20 L

d = 0.92 g/L

Now we will calculate the molar  mass.

d = PM/RT

0.92 g/L = 1 atm × M / 0.0821 atm.L/mol.K ×273.15 K

M =  0.92 g/L × 0.0821 atm.L/mol.K ×273.15 K /  1 atm

M = 20.5 g/mol

8 0
2 years ago
Other questions:
  • 1 where does drinking water come<br> from? How might it become<br> polluted or contaminated?
    15·1 answer
  • HELPPPPP NEED FOR ESSAY Vicente is going to spend the afternoon in his yard. He has the choice to get in the pool, lay on a cott
    10·2 answers
  • All atoms of the same element have the same
    9·1 answer
  • 12. How is the melting point of a substance related to its freezing point? Both indicate the temperature at which the solid and
    11·2 answers
  • Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o
    14·1 answer
  • Question 2
    12·1 answer
  • Please help ASAP PLEASE
    9·1 answer
  • The student titrated 10 ml of standered 0.15 M HCl with his sodium hydroxide solution. When the titration reached the equivalenc
    8·1 answer
  • ____ occurs when the vapor pressure of a liquid is equal to the external atmospheric pressure.
    10·2 answers
  • What is the difference between a pure solvent and a solution? Do they have the same physical properties?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!