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
Sphinxa [80]
3 years ago
5

How fast did the universe expand?​

Chemistry
2 answers:
Sidana [21]3 years ago
7 0

Answer:

Actually there is no answer but there is so much theories but people mostly says Bug Bang

VARVARA [1.3K]3 years ago
6 0
In 2001, Dr. Wendy Freedman determined space to expand at 72 kilometers per second per megaparsec - roughly 3.3 million light years - meaning that for every 3.3 million light years further away from the earth you are, the matter where you are, is moving away from earth 72 kilometers a second faster.
You might be interested in
How are atoms of the same element with different mass numbers called?
ELEN [110]

Answer:

Isotopes

Explanation:

Isotopes are the same element with different masses because of the different number of neutrons. Also, the element doesn't change. If we change the protons, the element will change and then it won't be an isotope. Hope it helps!

7 0
3 years ago
Explain how the following changes would affect the rate of the reaction of 2-bromo-3-methylbutane with methanol: Part A The alky
swat32

Answer:

The reaction will be slower because the leaving group will be poorer.

Explanation:

One Important thing to put at the back of our mind is that weak bases are good leaving groups. Another thing to take note is that in the halogen series(which is our main subject in this question) as you go down the group the greater or the more heavy the halide is and the heavier halides are more stable that is Bromine will be more stable than chlorine.

Now, we are now told that the bromo halide is been replaced by the chloro halide which means that the rate of Reaction will surely decrease because the leaving group. The cl^- is a stronger base.

6 0
3 years ago
2Ni(OH) → Ni2O + H2O <br> How many moles of water forms from 4.20 mol of nickel (I) hydroxide?
butalik [34]

Answer:

2.1 moles of water formed.

Explanation:

Given data:

Moles of water formed = ?

Moles of Ni(OH) = 4.20 mol

Solution:

Chemical equation:

2Ni(OH)    →  Ni₂O + H₂O

Now we will compare the moles of Ni(OH)  with water.

             Ni(OH)           :            H₂O

                2                 :              1

              4.20             :            1/2×4.20 = 2.1 mol

2.1 moles of water formed.

5 0
2 years ago
Plz answer quick
SCORPION-xisa [38]
It’s baron I got it right on edg
8 0
3 years ago
Read 2 more answers
Describe three different scenarios where a chemical process or reaction shows an increase in entropy.
Jet001 [13]
The request is characterized as knowing where things are and having the capacity to discover and utilize the things. 
In a compound procedure, there is more issue, more entropy when the particles 
1. warm up, increment in temperature. The atoms are more disorganized 
2. get stirred up and must be isolated with exertion. Bedlam. 
3. state changes, dissolves, vaporizes. The atoms are more turbulent 
4. respond to frame a pack of various particles. More disorder
4 0
3 years ago
Other questions:
  • What would happen if an atom of fluorine (F) came into contact with an atom of neon (Ne)?
    14·1 answer
  • What is unsaturated solution​
    12·2 answers
  • An igneous rock is composed primarily of quartz and feldspar. what type of magma most likely formed this rock?
    9·2 answers
  • A 6.40 g sample of solid KCl was dissolved in 42.0 g of water. The initial temperature of the water was 20.60°C. After the compo
    6·1 answer
  • What is other word for carefully looking at an object or process beginning with the letter O and is 11 letters long
    15·1 answer
  • Which of the following would cause a physical change in a bar of steel?
    10·2 answers
  • A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 19.78 nm. What is the total wi
    9·1 answer
  • Is a backpacking tent a structure of mass, frame, or shell?<br> Which one would it be?
    6·1 answer
  • 7. What would the pH of soap be if its (OH-) = 1 x 10 M ?
    14·1 answer
  • Prepare a dialogue between two friends about development of society .​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!