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
Dmitrij [34]
3 years ago
5

What is radio isotopes?

Chemistry
2 answers:
Evgesh-ka [11]3 years ago
7 0
<span>Radioactive isotope, also called radioisotope, radionuclide, or radioactive nuclide, any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays.</span>
Julli [10]3 years ago
4 0
Any of the same chemical element with different masses whose nuclei are unstable and gets energy by emitting radiation in the form of alpha, beta, and gamma rays.
You might be interested in
Which is NOT an assumption of matter made by the kinetic molecular theory of gases?
sertanlavr [38]

Answer:

a. the Kinetic energy of particles is determined by their mass and their velocity.

6 0
3 years ago
How many grams of water will be produced from 50 g hydrogen reacting with 50 g oxygen?
DanielleElmas [232]

We need to first come up with a balanced equation:


4H+O_{2} → 2H_{2}O


We know that the molar ratio of hydrogen to oxygen to water now is 4:1:2.


Converting the amount of grams given to moles is as follows:


Hydrogen: \frac{1mole}{1.008g}*50g=49.6mol


Oxygen: \frac{1mole}{15.999g}*50g=3.125mol


We know now that the limiting reactant is oxygen. We can then know that the number of moles of water are produced are double the number of moles of oxygen used due to the ratio that we established at the beginning - 4:1:2.


So we now can use 6.25 moles of water as the amount produced.


Then we convert moles of water to grams:


\frac{18.015g}{1mole} *6.25mol=112.59g


Now we know that there are 112.59g of water produced when we start with 50g of hydrogen and 50g of water.

4 0
3 years ago
A 25.225 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 75.815 g of wa
Rudik [331]

Answer:

1.43 (w/w %)

Explanation:

HCl reacts with NH3 as follows:

HCl + NH3 → NH4+ + Cl-

<em>1 mole of HCl reacts per mole of ammonia.</em>

Mass of NH3 is obtained as follows:

<em>Moles HCl:</em>

0.02999L * (0.1068mol / L) = 3.203x10-3 moles HCl = <em>Moles NH3</em>

<em>Mass NH3 in the aliquot:</em>

3.203x10-3 moles NH3 * (17.031g / mol) = 0.0545g.

Mass of sample + water = 22.225g + 75.815g = 98.04g

Dilution factor: 98.04g / 14.842g = 6.6056

That means mass of NH3 in the sample is:

0.0545g * 6.6056 = 0.36g NH3

Weight percent is:

0.36g NH3 / 25.225g * 100

<h3>1.43 (w/w %)</h3>
6 0
3 years ago
13) Find the mass, in grams, of 5.75 liters of N2.
faltersainse [42]
Molecular weight of N2
gram Atomic weight of N is 14 g.
gram Molecular weight = 14 g×2
= 28 g
Liter concepts
1 liter of gas always occupies 1 gram molecular weight .
Application of the concept
5.75 liter gives 0.257g


1 mole will occupy 28 g

0.257 will occupy 28 g × 0.257
= 7.196 g

The mass of the gas is 7.196 g.

Hope it helps you
8 0
3 years ago
A negative change in entropy indicates that...
vovangra [49]

Answer:

B. the products have a smaller number of available energy microstates than the reactants.

4 0
3 years ago
Read 2 more answers
Other questions:
  • The following observations are made about two hypothetical elements A and B: The A?A and B?Bbond lengths in elemental A and B ar
    6·1 answer
  • What is part of every cell
    9·2 answers
  • How does the density or aluminum compare to the density of gold
    14·1 answer
  • How does repeatability have an affect on scientific research?
    15·1 answer
  • What is 5L to mL ( chemistry )
    13·2 answers
  • Please help!! Will name brainliest!! Lots of points. Please I need really quick!! I'd really appreciate it
    6·1 answer
  • Apply Concepts H2O and H2O2 are binary molecular compounds generally known by their common names, “water” and “hydrogen peroxide
    14·1 answer
  • At 35°C and 2 atm of pressure, the volume of gas is 200 ml. If the temperature changes to
    15·1 answer
  • How many moles are equal to 9.11 x 1022 formula units of cadmium peroxide?
    14·1 answer
  • A high school girl was getting ready for a big date but discovered with horror that her silver necklace was tarnished. having ju
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!