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
vovikov84 [41]
3 years ago
12

What is the definition of star

Chemistry
1 answer:
Tanya [424]3 years ago
8 0

Answer:

A luminous ball of gas in space

Explanation:

This luminous ball of gas is held by its own gravity.

You might be interested in
elements on the right side of the periodic table differ from the elements on the left side in that elements on the right side
yarga [219]

Element  on the right side  of the periodic  table  differ from the elements on  the left side  in that elements on the <em>right  side  are non   metallic  and tends to be gases at room  temperature.</em>


<em>  </em><u>Explanation</u>

In the periodic table there element in  the right side , left side and those  which are in between.

  •  Example of element  in the right side is  fluorine  chlorine, neon, Argon   among others.
  • This element have higher  effective nuclear  charges   and  stabilize electrons more effectively.
  • there electrostatic  intermolecular  forces  are generally weak  therefore they  exist in  liquid or gaseous state.
7 0
3 years ago
PLEASE HELP I REALLY NEED THIS IM LATE
ANTONII [103]

Answer:

Pitch:it refers to the highest and lowness of a sound.

Wavelength: It is the distance measured from one crest to another, or from one trough to another.

Refraction of Light: The light bends as it travels from one medium to another.

Reflection of Light: It happens when light bounces back after hitting a well-polished surface.

Crest: The highest point of the wave from the center.

<u>I hope this helps! :)</u>

4 0
3 years ago
How many grams of gasoline would you need to burn to move your car 2.5 miles which takes 5,375 kJ? (Hrxn= 47kJ/g)
docker41 [41]

Answer:

1.1 × 10² g

Explanation:

The combustion of gasoline releases energy that is used to move the car. The enthalpy of reaction (ΔH°rxn) of the combustion of gasoline is 47 kJ/g, that is, 47 kiloJoule are produced per gram of gasoline burned. The mass of gasoline to be burned to release 5,375 kJ is:

5,375 kJ × 1 g Gasoline/47 kJ = 1.1 × 10² g

4 0
3 years ago
Which of the following terms best describes air? (1 point) element compound mixture none of the above
Anna11 [10]
Air is considered a homogeneous mixture. Hope that helps :)
4 0
4 years ago
The pressure of 1 mol of gas is decreased to 0.5 atm at 273 K. What happens to the molar volume of the gas under these condition
m_a_m_a [10]

Answer : The molar volume of the gas will be, 44.82 L

Solution :

Using ideal gas equation,

PV=nRT

where,

n = number of moles of gas  = 1 mole

P = pressure of the gas = 0.5 atm

T = temperature of the gas = 273 K

R = gas constant = 0.0821 Latm/moleK

V = volume of the gas.

Now put all the given values in the above equation, we get the molar volume of the gas.

(0.5atm)\times V=(1mole)\times (0.0821Latm/moleK)\times (273K)

V=44.82L

Therefore, the molar volume of the gas will be, 44.82 L

6 0
3 years ago
Other questions:
  • Which of the following statements about subatomic particles best characterizes electrons? A positive charge, light, circling the
    7·2 answers
  • Question 6(Multiple Choice Worth 3 points)
    14·2 answers
  • Water found in streams, depressions,and from the ground must first bepurified since all water sources should be considered as be
    11·1 answer
  • Dogs can have different coloured coats, this is known v________
    11·1 answer
  • Which of the following is a correct statement about collision theory?
    13·2 answers
  • Which following substances is covalently bonded??
    11·1 answer
  • The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been ad
    7·1 answer
  • N the reaction Mg + 2HCl -&gt; MgCl2 + H2 which element’s oxidation number does not change?
    8·1 answer
  • Which option best describes the water cycle?
    12·1 answer
  • BONUS: SHOW D.A. SETUP AND CORRECT ANSWER FOR +2 POINTS
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!