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
Murrr4er [49]
1 year ago
8

at 55 years what mass remains of a 200.0 g sample of a radioactive isotope with a half life of 10.0 years

Chemistry
1 answer:
Harman [31]1 year ago
3 0

Answer:

4.419 g

Explanation:

     55 years is 5.5 half lives

200 g   *   (1/2)^5.5 = 4.419 g

You might be interested in
Calculate how many moles of Ca(OH)2 are needed to produce 4.8 x 1024 NH3 molecules, according to the following equation
bonufazy [111]

Answer:

66.33

Explanation:

5 0
3 years ago
What do hydroelectric plants use to turn a turbine when producing electrical energy?
oksian1 [2.3K]
A. water
the word hydro means water
7 0
3 years ago
1. Carson completed conductivity testing on the solutions shown in the data table below and recorded his findings in the conduct
pishuonlain [190]

Answer:

See below :)

Explanation:

There is an evident reason why some of the solutions Carson's has listed and observed, does conduct electricity and some that do.

A flow of electrical charge is called an electric current. Ions are atoms, or sets of atoms, that contain an electrical charge. There are two types of ions, cation or a positively charged ion containing a deficiency of electrons, and anion or a negatively charged ion which contains a surplus of electrons. When a solution conducts electricity the charge is carried within by ions that move through the solution. The larger the number of ions in the solution, the better the conductivity of the solution is. Pure water does not conduct very well because it contains very few ions, but when table salt (NaCl) is dissolved in the water, this solution does conduct well because the solution contains a more abundance of ions. The majority of the ions come from the table salt, chemically names sodium chloride. Because Sodium contains its sodium ions, and these are positive charge and chloride ions which is a negative charge, it is called an ionic substance. Not every substance is made up of ions, one such example is sugar (C12H22O11). Sugar is made up of uncharged particles also called molecules. Although sugar is a substance its molecules do not hold a charge, thus when sugar is dissolved in water, the solution does not conduct electricity, due to the lack of ions in the solution.

Therefore, depending on the ions that make up the compound, the substance would or would not conduct electricity.

4 0
3 years ago
This is methane, Methane is gas that is found in small quantities in Earth's atmosphere. Methane is the simplest hydrocarbon,
const2013 [10]

Answer:

CH4

Explanation:

I looked it up and took the test

5 0
3 years ago
Because the moon travels around Earth,it is a an blank
Lunna [17]
The answer could be a satellite
6 0
3 years ago
Other questions:
  • A generic gas, x, is placed in a sealed glass jar and decomposes to form gaseous y and solid z. 2x(g)↽−−⇀y(g)+z(s) how are these
    6·2 answers
  • Which is the best term to use when describing the energy of position?
    15·2 answers
  • How might temperature changes in the human body have an impact on human health ?
    14·1 answer
  • Using the words Kool Aid, sugar, and water, explain how a solution can be:
    5·1 answer
  • True or false the strength and concentration of an acid or base describe the same property.
    15·2 answers
  • 17 POINTS (SERIOUS ANSWER ASAPP)
    9·1 answer
  • Charlotte is driving at 56.0 mi/h and receives a text message. She looks down at her phone and takes her eyes off the road for 3
    15·1 answer
  • Which chemical can be added to an acidic soil to make it neutral ​it's easy
    15·1 answer
  • How many miles of a gas at 100 c does it take to fill a 1.00 l flask to a pressure of 152kPa
    15·1 answer
  • How many miles of Fe are in 11.8 g of Fe
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!