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
Softa [21]
2 years ago
13

Please hep its my last question

Chemistry
1 answer:
atroni [7]2 years ago
7 0

Answer:Noble gases:

 are highly reactive.

 react only with other gases.

 do not appear in the periodic table.

 are not very reactive with other elements.

Explanation:Noble gases:

 are highly reactive.

 react only with other gases.

 do not appear in the periodic table.

 are not very reactive with other elements.

You might be interested in
Hydrogen peroxide (h​2​o​2​) decomposes according to the equation:h​2​o​2​(​l​) ​⇆​ h​2​o(​l​) + ½ o​2​(​g​)calculate k​p​ for t
goldenfox [79]
Hello! Let me try to answer this :)

Thanks and please correct if there are any mistakes ^ ^

6 0
3 years ago
Which molecule has a high specific heat?<br><br> a) C2H6<br> b) C2H6O<br> c) H2O
dem82 [27]
H2O is the correct answer :)
4 0
2 years ago
Which of the following scientists made an important contribution to quantum mechanics: (i) Bohr (ii) deBroglie (iii) Heisenberg
grandymaker [24]

Answer:

(i) Bohr; (ii) de Broglie; (iii) Heisenberg (v) Schrödinger

Explanation:

(i) Niels Bohr — 1913 — proposed that electrons travel in fixed orbits with <em>quantized energy levels</em> and that they jump from one energy level to another by absorbing or emitting quanta of light.

(ii) <em>Louis de Broglie</em> — 1924 — proposed the wave nature of electrons and suggested that all matter behaves as both waves and particles (<em>wave-particle duality</em>).

(iii) Werner Heisenberg — 1927 — formulated quantum mechanics in terms of matrices and proposed his famous <em>uncertainty principle</em>.

(v) Erwin Schrödinger — 1926 — applied wave mechanics to the electron in a hydrogen atom, showing that electrons exist in <em>orbitals </em>rather that orbits.

(iv) <em>Ernest Rutherford</em> — 1911 — proposed that atoms have most of their mass in a central nucleus (<em>nuclear atom</em>). Quantum mechanics had not yet been invented.

4 0
3 years ago
Why don't satellites in orbit fly into space?
Alex787 [66]
This is a question similar to one wrestled with by Newton himself, who didn't understand why the planets didn't fall into each other. The reason satellites don't fly into space is because they are being pulled towards the planet by the planet's gravity. 
<span />
7 0
3 years ago
What percentage of radium 288 is left after 1600 years ? ( figure out the number of half-lives,then look at the chart above to f
erastovalidia [21]

Answer:

Find it ur self lol

Explanation:

lol just look it up

5 0
3 years ago
Other questions:
  • What is 9,865 km expressed in scientific notation? A. 9.865 × 100 km B. 9.865 × 102 km C. 9.865 × 103 km D. 9.865 × 10-3 km
    15·1 answer
  • Given the equation I2(s) + 62.4kJ --&gt; I2(g), which of the following is true:
    15·1 answer
  • Which of the following elements in group 1 of the periodic table has the smallest atomic radius?
    8·1 answer
  • What are two of the characteristics of water that make it so important in living<br> organisms?
    7·1 answer
  • What is the density, in g/mL, of a cube of lead (Pb) that weighs 0.371 kg and has a volume of 2.00 in.3
    8·1 answer
  • Balance the following equation: H20 --&gt; H2 + O2​
    10·1 answer
  • In a certain experiment, 28.0 mL of 0.250 M HNO3and 53.0 mL of 0.320 M KOH are mixed. Calculate the number of moles of water for
    9·1 answer
  • How much<br>much hydrogen gas evolved<br>when 1.5 current is passed through water for 1.5 hours?​
    15·1 answer
  • Pls someone help ASAP
    11·1 answer
  • According to the data, the temperature of the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!