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
Rufina [12.5K]
3 years ago
11

Two friends are arguing about the structure of the universe. Caleb says that the universe is made of many galaxies that are made

of millions of stars and many galaxies that are made of millions of planets. Maria says that he is wrong because galaxies like the Milky Way are made up of millions of universes with millions of stars.
Chemistry
1 answer:
kiruha [24]3 years ago
6 0
I think that Maria is wrong
You might be interested in
Which system of measurement does the U.S. use?????
nasty-shy [4]
U.S customary system 
8 0
3 years ago
To create a program with block-based code, the programmer needs to drag the blocks of code into the _____.
padilas [110]

Editor. That’s where you make the code

8 0
3 years ago
42.9 liters of hydrogen are collected over water at 76.0 °C and has a pressure of 294 kPa. What would the pressure (in kPa) of t
BabaBlast [244]

Answer:

494.1 kPa

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (kPa)

P2 = final pressure (kPa)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

P1 = 294 kPa

P2 = ?

V1 = 42.9 liters

V2 = 22.8 liters

T1 = 76.0°C = 76 + 273 = 349K

T2 = 38.7°C = 38.7 + 273 = 311.7K

294 × 42.9/349 = P2 × 22.8/311.7

12612.6/349 = 22.8 P2/311.7

36.14 = 22.8P2/311.7

Cross multiply

36.14 × 311.7 = 22.8P2

11264.605 = 22.8P2

P2 = 11264.605 ÷ 22.8

P2 = 494.1 kPa

3 0
2 years ago
How many chlorine atoms are found in 8.3 moles of chlorine?
erik [133]

Answer:

5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 1 mole of the compound contains 6.023 * 10²³ atoms, 8.3 moles of the compound how many atoms does it have?

amount of atoms=\frac{8.3 moles*6.023*10^{23}atoms }{1 mole}

amount of atoms≅ 5*10²⁴ atoms

<u><em>5*10²⁴ chlorine atoms are found in 8.3 moles of chlorine.</em></u>

4 0
3 years ago
Who ever gets right gets brainliest
grandymaker [24]

Answer:

it's subduction

Explanation:

i know this because I just do lol

4 0
3 years ago
Other questions:
  • If 0.15 mol of I2 vapor can effuses through an opening in a heated vessel in 36 sec, how long will it take 0.15 mol of Cl2 to ef
    5·1 answer
  • Solid potassium hydroxide is slowly added to 175 mL of a 0.0621 M cobalt(II) nitrate solution. The concentration of hydroxide io
    13·1 answer
  • Voltaic cells and electrolytic cells are similar because:
    5·1 answer
  • How does a sample of helium at 15 degree Celsius compare to a sample of helium at 215 K?
    12·2 answers
  • In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH4 (g) + 2
    6·1 answer
  • In a chemical reaction, which symbol should be used to indicate a substance is in solution
    14·1 answer
  • Which option describes a similarity and a difference between isotopes of an element? A. same atomic number; different number of
    7·2 answers
  • 1. Matter can (change form/be created)
    10·1 answer
  • Can somebody please help me!!
    11·1 answer
  • All materials are made of _____________.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!