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
inessss [21]
4 years ago
15

Why did oceans not exist on Earth nearly 4 billion years ago?

Chemistry
1 answer:
rusak2 [61]4 years ago
7 0
B. water remained a gas because earth was very hot
You might be interested in
HELP !<br> 85g of NiCl2 dissolves in 350ml of H2O. What is the Molarity? Show your work
trapecia [35]

Answer:

1.874 M.

Explanation:

<em>Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.</em>

<em />

M = (no. of moles of solute)/(V of the solution (L)).

<em>∴ M = (mass/molar mass)of NiCl₂/(V of the solution (L)).</em>

<em></em>

∴ M = (mass/molar mass)of NiCl₂/(V of the solution (L)) = (85.0 g / 129.59 g/mol)/(0.35 L) = 1.874 M.

7 0
3 years ago
I WILL GIVE BRAINLIEST!!!!
lions [1.4K]

The correct answer is option c, that is, nucleus.  

A usual atom comprises three subatomic particles, that is, the neutrons, protons, and electrons. According to Bohr's model, the majority of the mass of an atom is in the nucleus, that is, a small, dense region at the center of each atom, comprising nucleons.  

The nucleons incorporate neutrons and protons. All the positive charge of an atom is found in the nucleus and arises from the protons, the neutrons are neutrally-charged, and the electrons are the negatively charged particles found outside of the nucleus.  


3 0
4 years ago
¿Cuál será la masa molar del agua?, si el hidrógeno tiene una masa atómica H=1.0 uma y el Oxigeno de 16 uma. * 1 punto
nataly862011 [7]

Answer:

18

Explanation:

Sabemos que la fórmula química del agua es H2O.

Usando la información que; H = 1, O = 16, podemos calcular la masa molar del agua de la siguiente manera

[2 (1) + 16] = 18

Por tanto, la masa molar del agua es 18

3 0
3 years ago
Energy due to the position of an object is called
Katena32 [7]
It’s A. potential energy
because it can move, due to how it’s placed,
it has “potential” for being able to gain energy
4 0
3 years ago
Carlos stomps a soda con flat and throw it away. Which of the following statements BEST describes the change made in the soda ca
NemiM [27]

Answer:

The soda can kept the same mass as it changed in shape only

Explanation:

Law of Conservation states "mass cannot be created or destroyed" therefore this is why the mass hasn't changed, but when it was smashed the shape changed.

6 0
3 years ago
Other questions:
  • The vapour pressure of pure benzene at 20 °C is 75 Torr and that of pure methylbenzene is 25 Torr at the same tempera-ture. In a
    10·1 answer
  • Alkali metals
    14·2 answers
  • For which of the following activities might you want to hire a chemist?
    6·2 answers
  • What element is located in group 2, period 2?
    5·1 answer
  • What is a system of knowledge and the methods of find that knowledge
    8·1 answer
  • The combustion of octane, C8H18, proceeds according to the reaction
    13·2 answers
  • Which of the following is not a factor that affects thermal energy of a substance?
    13·1 answer
  • The equation shows neutralization of an acid and a base to produce a salt and water
    5·1 answer
  • 9. Circle the atom in each pair that has the greater ionization energy.
    7·1 answer
  • Why chlorine has high electroaffinity than flourine​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!