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
Elina [12.6K]
3 years ago
8

2a Define Radioactivity?​

Chemistry
2 answers:
Luda [366]3 years ago
8 0

Answer:

The emmision of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei

or

the giving off of rays of energy or particles by the breaking apart of atoms of certain elements

Gwar [14]3 years ago
7 0
Jekskowkqoanwknwkwnwownsksnsk
You might be interested in
According to the law of conservation of energy which is always true
Lerok [7]
The sum of all energies involved in breaking and or forming chemical bonds within the reactants side of the reaction is equal to the sum of all energies involved in the formation and rearranging of atoms within the product side of the chemical reaction.

The total energies of reactants = the total energies of products.
8 0
3 years ago
What is the volume of an oxygen tank if it contains 12 moles of oxygen at 273 K under 75 kPa?
Zina [86]
Given:
n = 12 moles of oxygen
T = 273 K, temperature
p = 75 kPa, pressure

Use the ideal gas law, given by
pV=nRT \\ or \\  V= \frac{nRT}{p}
where
V = volume
R = 8.3145 J/(mol-K), the gas constant

Therefore,
V= \frac{(12\,mol)(8.3145\, \frac{J}{mol-K} )(273\,K)}{75 \times 10^{3} \, Pa}= 0.3632\,m^{3}

Answer: 0.363 m³
    
5 0
4 years ago
What happens immediately after you dissolve acid in water​
emmainna [20.7K]

Explanation:

Weak bases, just like weak acids, dissociate slowly when dissolved with water. An Arrhenius acid is any substance that ionizes when it dissolves in water to give the H+, or hydrogen, ion. An Arrhenius base is any substance that gives the OH-, or hydroxide, ion when it dissolves in water

welp hope it helped (Q.Q)

4 0
3 years ago
Calculate the root mean square (rms) average speed of the atoms in a sample of xenon gas at 0.15 atm and -55c
GrogVix [38]
Answer:
Vrms is 149.7266 m/sec

Explanation:
The root means square velocity of a gas can be calculated as follows:
Vrms = \sqrt{ \frac{3RT}{M}}
where:
R is the ideal gas constant = 8.3145
T is absolute temperature = -55 + 273 = 118 degrees kelvin
M is the molar mass of the gas = 131.293 grams = 0.131293 kg

Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec

Hope this helps :)
7 0
4 years ago
Radon is: Select one: a. an alpha-emitting gas that penetrates the skin naturally. b. a naturally occurring gas produced during
inysia [295]

Answer:

A

Explanation:

Radon is an alpha emitter. It emits alpha particles giving off gamma ray. It is a radioactive byproduct of radium-222.

Radon also penetrates the skin. This is because radon is a gas and chemically unreactive with most materials, it moves easily through very small spaces, such as those between particles of soil and rock, to the soil surface

Option B is wrong. It is produced during radioactive decay of radium and not uranium.

Option C is wrong. Radon is not a metallic element.

Option D is wrong also. It is not produced from photochemical smog

Option E is wrong. This is an extension of option B. Uranium is generally used in nuclear plant operations and not radium

7 0
4 years ago
Other questions:
  • An atom of 34S has how many protons, neutrons, and electrons?
    7·1 answer
  • 4 kg equals blank L​
    6·1 answer
  • Stained glass consists of colored dyes mixed with
    9·2 answers
  • The millions of fossils that scientists have collected are called the fossil __.
    6·1 answer
  • Science question below
    11·2 answers
  • What characterizes an Arrhenius acid-base reaction?
    8·2 answers
  • Which of the following is TRUE about most gases?
    11·2 answers
  • When an atom _________<br> an electron, it charge is positive.
    11·1 answer
  • How many particles are in chemicals
    7·1 answer
  • Joaq...
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!