All categories

3 years ago

What are the two most abundant elements in the universe

Chemistry

2 answers:

disa [49]3 years ago

5 0

Oxygen and hydrogen....Please mark brainliest...

Yuri [45]3 years ago

4 0

The two most abundant elements in the universe are HYDROGEN AND HELIUM. Hydrogen is the most abundant element followed by helium.
Hydrogen is the lightest of all element and the first element to be formed, followed by helium which has just two atoms.

You might be interested in

List the numbers of protons, neutrons, and electrons in Chlorine-18.

OLEGan [10]

17 protons 17 electrons 18 neutrons

7 0

3 years ago

In Universe , recently discovered by an intrepid team of chemists who also happen to have studied interdimensional travel, quant

tiny-mole [99]

Answer:

Check the explanation

Explanation:

When talking about our universe there are 5 d orbitals. The element of first transition series moves away from the universal principles of Hund's rule and Aufbav's principle. So in order to attain stability these elements tend to form half or full filled orbitals.

In our universe the ground state electronic configuration of sixth transition metal, Iron (Fe) : [Ar] $3d^{6} 4s^{2}$

and the electronic configuration of seventh transition metal, Cobalt (Co) : [Ar] $3d^{7} 4s^{2}$

=================================

In universe L there are seven orbitals.

Ground state electronic configuration of sixth and seven transition element.

Sixth transition metal: [Ar] $3d^{7} 4s^1 or [X] 3d^{7} 4s^1$

Seventh transition metal: [Ar] $3d^{7} 4s^{2}or [X] 3d^{7} 4s^{2}$

7 0

3 years ago

Please help me with this chemistry problem

Margarita [4]

Answer:

50 g of K₂CO₃ are needed

Explanation:

How many grams of K₂CO₃ are needed to make 500 g of a 10% m/m solution?

We analyse data:

500 g is the mass of the solution we want

10% m/m is a sort of concentration, in this case means that 10 g of solute (K₂CO₃) are contained in 100 g of solution

Therefore we can solve this, by a rule of three:

In 100 g of solution we have 10 g of K₂CO₃

In 500 g of solution we may have, (500 . 10) / 100 = 50 g of K₂CO₃

6 0

3 years ago

an, 13 Students set up two environments see which one best supports growth of hibiscus flowers. One environment is created as a

Assoli18 [71]

B. The Enviroment. The Soil and Humidity are differant. They both have high tematures, they use the same flowers in both, Hibiscus. The tropical environent should help the Hiviscus grow better.

8 0

3 years ago

Which of the 4 macromolecules is the most important for a cell to carry out metabolism and maintain homeostasis?

azamat

Answer:

Carbs,lipids,proteins,nuclei acids

Explanation:

3 0

2 years ago