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
makvit [3.9K]
3 years ago
14

When hydrogen is burned in the presence of oxygen it will form water, as per the equation: 2H2 + O2 -> 2H2O. Which types of r

eactions does this fall under?
I. synthesis
II. decomposition
III. single replacement
IV. double replacement
V. combustion



A. I, II, and III
B. I and V
C. II, III, and IV
D. II and IV
Chemistry
1 answer:
nadya68 [22]3 years ago
4 0

Answer:

B

Explanation:

Hydrogen is synthesized to water by adding Oxygen.

Hydrogen is oxidised to water by combustion ( burning in presence of oxygen).

You might be interested in
What is the wavelength of the matter wave associated with an electron (me= 9.1 x 10-31 kg) moving with a speed of 2.5 x 107 m/s?
riadik2000 [5.3K]
And h value is constant 6.624 x 10^-34

3 0
3 years ago
What is the name of the binary compound that has the formula k2s?
kozerog [31]

Potassium sulfide, also known as dipotassium monosulfide, consists of two potassium ions bonded to a sulfide atom, rendering the chemical formula K2S.<span>Rarely found in nature due to its high reactivity with water, potassium sulfide is refined from the more common potassium sulfate (K2SO4) and is used in many industries</span>

8 0
2 years ago
Please help!!!!!!!!!!!!!!!!!!!
zimovet [89]

Answer:

Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs.

Explanation:

Brainly pls

3 0
2 years ago
Balancing Chemical Equation<br> Na+Br2=NaBr
solniwko [45]

Answer:

2Na + Br2 = 2NaBr

Explanation:

In order to balance a chemical equation you make the make sure both sides have the same number of atoms on each side, you do this by multiplying on both sides as if it was a algebraic equation.

Na+ Br2 = NaBr

Na × 2 = Na2

Na × 2 = Na2

Br × 2 = Br2

2Na + Br2 = 2NaBr

Hope this helps.

7 0
3 years ago
How does temp affect the phase of a substance
notka56 [123]

Answer:

state of matter

Explanation:

so take water for example, water has a melting point and a boiling point right? So if it's below 0 degrees, then it's in its solid phase. If the temperature is above 0 degrees, then the water starts to melt into its liquid phase. Then when the temperature is above 100 degrees, water starts to boil and become its gas phase. This is the same for all substances. The only difference is different substances have different melting and boiling points so the numbers will be different depending on your substance. hope this helped!

3 0
3 years ago
Other questions:
  • Condensation refers to the process when
    9·1 answer
  • Determine the molecular weight of H2O.<br><br> 18 g<br> 18.0 g<br> 18.01 g<br> 18.016 g
    12·2 answers
  • Which of the following describes how microorganisms influence the chemical characteristic of soil
    6·1 answer
  • Atoms of one element are converted to atoms of another element through
    13·1 answer
  • Which is responsible for the high thermal energy required to melt ice? (1 point)?
    5·1 answer
  • Which explanation correctly describes why it is important for a cell’s surface-area-to-volume ratio to not be too small?
    13·1 answer
  • Balance the following chemical reaction: _NaOH + _H2SO4 -----&gt;_Na2SO4 +_H20
    6·1 answer
  • Please help, lots of points!
    8·1 answer
  • Which of these provides the most creative explanation for how rocks are made at present?
    13·1 answer
  • Are all elements atoms and are all atoms elements?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!