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
Andrews [41]
3 years ago
9

The Earth, the Sun, and the rest of the solar system are almost unimaginably old when viewed on a human time scale. While modern

humans first evolved approximately 200,000 years ago, the age of the Earth, the Sun, and the rest of the solar system is approximately what years
Chemistry
2 answers:
Nadusha1986 [10]3 years ago
8 0

Answer:

4.6 billion

Explanation:

i did it on study island

lord [1]3 years ago
4 0
That makes the Earth, the Sun, and the rest of the solar system
<span>something like  23 thousand times  as old as the human species !
</span><span>
</span>
You might be interested in
How do rivers become larger as they travel across land?
Kamila [148]
They rise as it rains
6 0
3 years ago
b) Si los ácidos nitroso y fluorhídrico están descritos como electrolitos débiles, ¿significa que en la disolución hay moléculas
viva [34]

Los electrolitos son sustancias que se disocian en agua para dar iones.

Generalmente en química, podemos clasificar sustancias como

  • Electrolitos
  • No electrolitos

Los electrolitos pueden disociarse en solución para producir iones, pero un no electrolito no puede hacer eso.

Entre los electrolitos hay dos clases;

  • Electrolitos fuertes
  • Electrolitos débiles

Los electrolitos fuertes se disocian completamente en solución, mientras que los electrolitos débiles no se disocian completamente en solución.

El hecho de que los electrolitos débiles no se disocien por completo significa que algunas moléculas de la sustancia no se disocian.

Por lo tanto, si los ácidos nitroso y fluorhídrico se describen como electrolitos débiles, esto significa que hay moléculas en la solución que no están disociadas.

Lea más: brainly.com/question/14566383

5 0
2 years ago
. Sulfur dioxide can be produced in the laboratory by the reaction of hydrochloric acid and a sulfite salt such as sodium sulfit
shutvik [7]

Answer:

Mass of SO₂ can be made from 25.0 g of Na₂SO₃ and 22 g of HCl = 12.672 g

Explanation:

SO₂( sulfur dioxide) can be produced in the lab. by the reaction of hydrochloric acid & sulphite salt such as sodium.

        the balanced chemical equation is as follows

                       Na₂SO₃ + 2 HCl → 2 NaCl + SO₂ + H₂O

Moles of Na₂SO₃ = \frac{Mass}{Molecular mass} =\frac{25}{126} = 0.198

Moles of HCl = \frac{mass}{molecular mass}=\frac{22}{36.5}= 0.6

using mole ratio method to find limiting reagent

      For sodium sulfite \frac{mole}{stoichiometry}  = \frac{0.198}{1}= 0.198

 for HCl \frac{mole}{stoichiometry}  = \frac{0.6}{2}= 0.3

since <u>sodium sulfite</u> is <u>limiting reactant</u> for above chemical reaction

1 mole of Na₂SO₃ produce 1 mole of SO₂

0.198 mole of Na₂SO₃ produce 0.198 mole of SO₂

∴ Mass of SO₂ produce = mole x molar mass of SO₂

                                       = 0.198 x 64

                                       = 12.672 g

8 0
3 years ago
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
malfutka [58]

Answer: I think G.

Explanation:

8 0
3 years ago
Read 2 more answers
Preparation of ammonia gas<br>​
Makovka662 [10]

Answer:

Ammonia is easily made in the laboratory by heating an ammonium salt, such as ammonium chloride NH4Cl with a strong alkali, such as sodium hydroxide or calcium hydroxide.

The gas may also be made by warming concentrated ammonium hydroxide.

Explanation:

2NH4Cl + Ca(OH)2 → CaCl2 + 2H2O + 2NH3(g)

7 0
2 years ago
Other questions:
  • What is the difference between weight and mass
    15·2 answers
  • Find the volume occupied by 18.0 g of helium gas at 29.0 ∘c and 1.33 atm of pressure.
    15·1 answer
  • Acid formulas can be distinguished from base formulas because acid formulas usually and base formulas .
    9·1 answer
  • The vinegar solution you can purchase at the store is about 5% by mass acetic acid. It will be easier for you to assess your res
    9·1 answer
  • A substance that is dissolved in a solution is called a(n) __________________.
    14·1 answer
  • In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.
    14·1 answer
  • Which of the following has the shortest half life?
    15·1 answer
  • When dissolved substances are spread evenly throughout a mixture it is called a
    7·2 answers
  • What is the relationship between protons and electrons in a neutral atom?
    6·1 answer
  • Which of the following is a product formed when BaO and H2O react together?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!