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
Alex787 [66]
2 years ago
10

Why do scientist describe the properties of elemts under "Standard Conditions"?

Physics
1 answer:
skad [1K]2 years ago
7 0
The standard states of elements are the forms that they adopt at a temperature of 25°C and pressure of 1 atmosphere. These forms of the elements are the reactants in the formation equations of multi-element substances. The heat of formation (∆Hf°) of an element in its standard state is zero
You might be interested in
A 4.44 l container holds 15.4 g of oxygen at 22.55°c. what is the pressure?
padilas [110]
We will use the ideal gas equation:
PV = nRT, where n is moles and equal to mass / Mr
P = mRT/MrV
P = 15.4 x 8.314 x (22.55 + 273) / 32 x 4.44
P = 266.3 kPa
5 0
3 years ago
How many elections are shared between one nitrogen atom and one carbon atom?
Charra [1.4K]

Answer:

3 electrons from nitrogen and 3 from carbon while carbon already has a lone pair along with a negative charge (called cyanide)

8 0
3 years ago
Which of the following is the BEST explanation for why oceans have two different types of currents?
ivanzaharov [21]

Answer:

sddww

Explanation:

szsswa

7 0
3 years ago
An alpha particle(the nucleus of a helium atom) has a mass of 6.64*10^-27kg and a charge of +2e. What are the magnitude and dire
emmasim [6.3K]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Weight = electric force 
<span>mg = qE </span>

<span>6.64x10^-27 x 9.81 = (2 x 1.60x10^-19) E 
</span>qE =mg, 
<span>E = mg/q = 6.64•10^-27•9.8/2•1.6•10^-19 =2.03•10^-7 V/m</span>
8 0
3 years ago
Read 2 more answers
A student is concerned about background radiation that she is exposed to. She claims that nuclear power plants have caused backg
denis-greek [22]
Based on the given statement or reasoning above made by a student, what makes her reasoning incorrect is the part where she mentioned that "if they had not been built, she would not be exposed to radioactivity." This is definitely false. What makes this incorrect is that background radiation is a kind of radiation that is emitted by the sun, stars, and other bodies outside the universe and therefore, no one can escape from this. Hope this helps.
5 0
3 years ago
Read 2 more answers
Other questions:
  • imagine that a tank is filled with water the hight of the liquid column is 7 meters and the area is 1.5 sq meters (m™). what's t
    14·1 answer
  • Astronomers initially had difficulty identifying the emission lines in quasar spectra at optical wavelengths because
    8·1 answer
  • a sound wave is determined to have a frequency of 1,000 hz and wavelength of 35cm. what is the speed of this wave?
    7·1 answer
  • What is the name given to a material with zero resistance that can conduct electricity without a loss of energy?
    7·1 answer
  • g A change in the initial _____ of a projectile changes the range and maximum height of the projectile.​
    15·1 answer
  • Which type of force can act through empty space?
    8·1 answer
  • A 100-W (watt) light bulb has resistance R=143Ω (ohms) when attached to household current, where voltage varies as V=V0sin(2πft)
    7·1 answer
  • At the local playground, a 21-kg child sits on the right end of a horizontal teeter-totter, 1.8 m from the pivot point. On the l
    6·1 answer
  • How are doctors both accurate and precise when preforming surgery or other things?
    13·1 answer
  • The main difference between distance and displacement is tat
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!