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
LekaFEV [45]
2 years ago
8

According to the big bang theory, which statement is accurate about how the universe came to be?

Chemistry
2 answers:
DIA [1.3K]2 years ago
8 0

Answer:

The term Big Bang defines that the Universe has expanded from the ancient hot and thick primary situation at some fixed time in the past.

Big Bang theory refers to the origin of the Universe. In the beginning, universe is very heavy and small hot ball of matter. It was a point no bigger than the head of a pin when all the things squished with each other and universe is expanded with huge explosion of energy. Due to expansion, it is cooled and results in the formation of Stars and galaxies. After sometime, atoms formed like helium and hydrogen.

Thus, statement (1), (3) and (4) is correct whereas statement (2) and (5) is incorrect. the right answer is - (It expanded slowly), (Stars and galaxies formed,) (Atoms such as hydrogen and helium formed.)

Explanation:

IrinaK [193]2 years ago
8 0

Answer:

The answer is A.It expanded slowly

Explanation:

I just took the test edge

You might be interested in
A sample of ethane (C2H6)was combusted completely and the water that formed has a mass of 1.61 grams.How much ethane, in grams,
ruslelena [56]

Answer:

0.89 g of ethane

Explanation:

The balanced reaction equation is

C2H6(g) + 7/2 O2(g) -----------> 2CO2(g) + 3H2O(g)

From this balanced reaction

30g of ethane yields 54g of water

Therefore mass of ethane necessary to obtain 1.61g of water we have:

30 × 1.61/54 = 0.89 g of ethane

5 0
3 years ago
Convert 19,864 mm to m​
navik [9.2K]
19.864 meters would be the correct answer
3 0
2 years ago
Read 2 more answers
Balance chemical equation Calcium hydroxide + carbon dioxide = calcium carbonate + water
dmitriy555 [2]

Answer:

yaeh

Explanation:

a)Ca(OH)

2

​

+CO

2

​

⟶CaCO

3

​

+H

2

​

O

No. of atoms:Ca−1;O−4;H−2;C−1

b)Zn+AgNO

3

​

⟶ZnNO

3

​

+Ag

No. of atoms:Zn−1;Ag−1;N−1;O−3.

7 0
3 years ago
Given that a for HCN is 6. 2×10^−10 at 25 °C. What is the value of b for cn− at 25 °C?
Kay [80]

If Ka for HCN is 6. 2×10^−10 at 25 °C, then the value of Kb for cn− at 25 °C is 1.6 × 10^(-5).

<h3>What is base dissociation constant? </h3><h3 />

The base dissociation constant (Kb) is defined as the measurement of the ions which base can dissociate or dissolve in the aqueous solution. The greater the value of base dissociation constant greater will be its basicity an strength.

The dissociation reaction of hydrogen cyanide can be given as

HCN --- (H+) + (CN-)

Given,

The value of Ka for HCN is 6.2× 10^(-10)

The correlation between base dissociation constant and acid dissociation constant is

Kw = Ka × Kb

Kw = 10^(-14)

Substituting values of Ka and Kw,

Kb = 10^(-14) /{6.2×10^(-10) }

= 1.6× 10^(-5)

Thus, the value of base dissociation constant at 25°C is 1.6 × 10^(-5).

learn more about base dissociation constant :

brainly.com/question/9234362

#SPJ4

4 0
2 years ago
In part A of the experiment you will need to make a 4.80 x 10-4 M KSCN solution starting with a 2.00 x 10-3M KSCN solution. You
ryzh [129]

Answer:

Answer to you need to make a 6.00 x 10-4 M KSCN solution starting with a 2.00 x 10-3 M KSCN solution. You will be making up the so. ... X 10-3 M KSCN Solution. You Will Be Making Up The Solution In A 25 ML Volumetric Flask And Using 0.5 M HNO3 As The Diluent. What Volume Of 2.00 X 10-3 M KSCN Will You Need?

Explanation:

7 0
3 years ago
Other questions:
  • The energy required to remove an electron from an atom is known as
    12·1 answer
  • Choose the words that make each statement true.
    10·1 answer
  • A sample of i-131 decays from 12 microcuries to 3.0 microcuries in 16 days. what is the half-life of i-131?
    11·1 answer
  • How do i find the square root of a number
    13·1 answer
  • In a constant‑pressure calorimeter, 70.0 mL of 0.770 M H2SO4 is added to 70.0 mL of 0.420 M NaOH. The reaction caused the temper
    9·1 answer
  • According to the equation 2Na + 2H2O mc012-1.jpg 2NaOH+H2, what mass of Na is required to yield 22.4 L of H2 at STP? (The atomic
    9·2 answers
  • Convert 3.4 kg to grams
    6·1 answer
  • How many moles are in 563.9 grams of arsenic?
    10·1 answer
  • What is molarity? .​
    13·1 answer
  • 9. Triacylglycerols are
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!