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
AURORKA [14]
3 years ago
12

Giúp mik giải hoá vs mik đag cần gấp

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
5 0

Answer: với những bài không biết bảo toàn e thì bạn có thể dùng bảo toàn nguyên tố cũng được, với pt hữu cơ thì ưu tiên cân bằng C, H trước rồi tới O

Explanation:

You might be interested in
Look at the four chemical reactions.
frutty [35]

Reaction 3 is different from the rest and it is because a single product is synthesized.

Option 2

<u>Explanation:</u>

The reaction given in 1,2 and 4 are dissociation reaction where a single compound is getting split into two compounds. So all those three reactions are exothermic as they are breaking the bonds leading to release of energy to the surrounding. But the reaction 3 is a formation reaction, where two chemical compounds are forming a single compound.

So in this case, new bonds are formed leading to absorption of energy from the surrounding. So this is an endothermic reaction. Thus, reaction 3 is different from the rest and it is because a single product is synthesized.

8 0
3 years ago
Charge of an electron
Zolol [24]

Answer: The charge on one electron is –1.6 x 10–19 coulomb.

Hope this helps!

3 0
3 years ago
Read 2 more answers
HELP PLEASE
WINSTONCH [101]

Answer:

164atm

Explanation:

Given parameters:

Initial pressure  = 150atm

Initial temperature  = 27°C  = 27 + 273 = 300K

New temperature  = 55°C  = 328K

Unknown:

New pressure  = ?

Solution:

At constant volume, the pressure of a given gas varies directly with the absolute temperature.

 Mathematically;

       \frac{P_{1} }{T_{1} }   = \frac{P_{2} }{T_{2} }  

P and T are pressure and temperature values

1 and 2 are the initial and new states

  Insert the parameters and solve;

   \frac{150}{300}   = \frac{P_{2} }{328}  

     300P₂  = 150 x 328

           P₂  = 164atm

4 0
3 years ago
What do you notice about the distance between the terrestrial planets compared with the spacing between the gas giants
LekaFEV [45]

Answer:

The spacing between the terrestrial planets is less than that between the gas planets.

Explanation:

Since the terrestrial planets which are Mercury, Venus, Earth and Mars have a distance of 0.4 AU, 0.7 A.U, 1.0 AU and 1.5 A.U respectively from while the gas planets which are Jupiter, Saturn, Uranus and Neptune have a distance of 5.2 AU, 9.6 AU, 19.6 AU and 30 AU respectively from the sun, we can see that the spacing between the terrestrial planets is much smaller than the spacing between the gas planets.

For example, the spacing between Mercury and Venus is 0.7 AU - 0.4 AU = 0.3 AU while that between Earth and Venus is 1.0 AU - 0.7 AU = 0.3 AU.

Also, the spacing between Earth and Mars is 1.5 AU - 1.0 AU = 0.5 AU.

Also too, the spacing between the gas planets is shown below  the spacing between Jupiter and Saturn is 9.6 AU - 5.2 AU = 4.4 AU while that between Uranus and Saturn is 19.6 AU - 9.6 AU = 10.0 AU.

Also, the spacing between Neptune and Uranus is 30 AU - 19.6 AU = 10.4 AU.

<u>Thus, we can see that the spacing between the terrestrial planets is less than that between the gas planets.</u>

Note that AU means astronomical unit and 1 AU is the distance between the Earth and the Sun. 1 AU = 1.50 × 10⁸ km

8 0
3 years ago
A vessel is full of a mixture of kerosene and petrol in which there is 18% kerosene.Eight litres are drawn off and then the vess
ExtremeBDS [4]
The answer in here is d)48 lit. We know this when we do the following procedure:
<span>kerosene=18%
so petrol =82%
after kerosene =15%
petrol=85%
so 3% =8
lit so total kerosene in the mixture =(8x18/3) =48 lit
</span>Hope this is useful
6 0
3 years ago
Other questions:
  • Calculate the equilibrium constants K’eq for each of the following reactions at pH 7.0 and 25oC, using the ∆Go’ values given: (a
    6·1 answer
  • A useful broad view of reactions between acids and bases involves the 1. ionization of atoms. 2. transfer of protons. 3. convers
    6·1 answer
  • A chemist must dilute 34.3mL of 1.72mM aqueous calcium sulfate solution until the concentration falls to 1.00mM. He'll do this b
    7·1 answer
  • How many grams of c will be needed to make 4 moles of c
    7·1 answer
  • Which of the following statements is true about Planck's Law?
    8·2 answers
  • HELP PLEASE Brainliest
    11·2 answers
  • Which has a higher electronegativity phosphorus or sodium
    7·1 answer
  • The density of the water is 1.00 g/mL.
    13·1 answer
  • What is the mass of carbon dioxide formed when 36g of carbon is burnt?<br> C+O2 -------&gt;C02
    15·1 answer
  • What kind of reaction shows two reactants combining to form one new product?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!