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
leonid [27]
3 years ago
6

Please help. thanks :)

Chemistry
2 answers:
Anastasy [175]3 years ago
7 0

Answer:

2H_{2}+O_{2}  ⇒  2H_{2}O is balanced.

Explanation:

  • In the first equation number of oxygen is not balanced
  • In the second equation number of hydrogen is not balanced
  • In the third equation one oxygen is extra in RHS
  • The fourth equation is the balanced one.

sleet_krkn [62]3 years ago
6 0

The correct answer would be equation 4, because there are 4 Hydrogens and 2 Oxygens on each side of the equation making it balanced.

You might be interested in
What causes the surface ocean currents in the Northern Hemisphere to deflect to the right, and the currents in the Southern Hemi
AVprozaik [17]
The Coriolis force is an inertial force that acts on objects that are in motion relative to a rotation reference frame. This causes moving objects to the right ( with respect to the direction of travel ) in the Northern hemisphere and to the left in the Southern hemisphere. The horizontal deflection is zero at the equator. It also causes the surface ocean currents in the Northern hemisphere to deflect to the right and the currents in the Southern hemisphere to deflect to the left.
Answer: the Coriolis force.  
4 0
3 years ago
Click the "draw structure" button to launch the drawing utility. under certain reaction conditions, 2,3−dibromobutane reacts wit
REY [17]

Answer:

Explanation:

According to this. Let's analize the possible products a, b and c.

First, the problem states that we have 2 eq. of base, For this case, let's assume it's KOH. Now, As we are doing a reaction with base, means that this reaction can only take places under conditions of SN2 and E2, a fast reaction that is taking place in only 1 step.

With this in mind, let's analyze product a. This states that it has two sp hybridized carbon, in other words, a triple bond between two carbons. So the product is with no doubt, an alkyne.

Product b has only one sp hybridized carbon, which means that this carbon should cannot be an alkyne because we need two carbon atoms. The only way to have one atom of C sp hybridized, is with two double bonds, so product b would have to a alkene with two double bonds.

Product c do not have sp hybridized carbon, therefore, it only has two double bonds in two different Carbon atoms, so it's another alkene with two double bonds, but in two different atoms of carbon.

Picture attached show the product a, b and c. Hope this can help

4 0
3 years ago
What is the number of electrons and protons can be seen in this atom?
pochemuha

Explanation:

the number of electrons = 8

and protons = 8 can be seen in this atom

8 0
3 years ago
Hello guys i wanted to ask if anyone could check my answers please :) 10 points
arlik [135]
The first answer is C, condensation is a physical process and the others are chemical.

The second answer is B, it doesn't change depending on location (the answer you chose)

The third answer is A.

The fourth answer is B. Temperature is an intensive property.

No explanations for the ones you got correct.
7 0
3 years ago
Read 2 more answers
This is for a study guide for my semester final, and I have no clue how to answer this, please help, and please at least try to
user100 [1]

Positron emission = emission of a positron and a neutrino when a proton is convert into a neutron. The total number of particles in the nucleus doesn't change, -1 proton +1 neutron

It's a spontaneous reaction for some nucleus.

eg:

Positron = e+

Neutrino=ve

O-15 --> N-15 + e+ +ve

Electron capture= A nucleus absorb an electron while a proton is convert in a neutron and emit a neutrino. The total number of particles in the nucleus doesn't change, -1 proton +1 neutron

eg:

Al-26 +e- --> Mg-26 + ve

Electron capture and positron emission are two mechanisms to explain the decay of some unstable isotopes. Electron capture is usually observed when the energy difference between the initial and final state is low. Mainly because of the larger amount of kinetic energy need for the expulsion two particles with the positron emission mechanism.


7 0
3 years ago
Other questions:
  • A characteristic of a pure substance that can be observed without
    14·1 answer
  • What is the coefficient of diphosphorus trioxide? (p2o3)
    10·1 answer
  • Question 1 (1 point)
    7·2 answers
  • Name some compounds and please amswer me guys Im from Australia and please follow bro.....Lusss​
    14·1 answer
  • 1. In class, students learned that a cart will move when a force of 50 N
    11·1 answer
  • Bob the chemist ran a TLC plate of his product, but the spot would not move off the baseline. The eluent he used consisted of a
    15·1 answer
  • Which kind of statement distinguishes a term from all other terms?
    5·1 answer
  • The system that works with respiratory system for the exchange of gases to take place is..?​
    9·2 answers
  • How many cl- ions are there in 2. 50 kg of barium chooride.
    14·1 answer
  • What is organic chemistry? Name at least three categories of compounds that are studied as
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!