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
Firdavs [7]
3 years ago
5

Most fuel gases used for welding are

Chemistry
2 answers:
QveST [7]3 years ago
8 0
Acetylene which has a two stage reaction
NikAS [45]3 years ago
6 0
Acetylene is the only fuel gas suitable for gas welding because of its favourable flame characteristics of both high temperature and high propagation rates. Other fuel gases, such as propane, propylene or natural gas, produce insufficient heat input for welding but are used for cutting, torch brazing and soldering.
You might be interested in
consider the reaction of hydrogen and oxygen producing water. If 24.6 g of water is produced and 2.9 g of hydrogen is used, how
Maurinko [17]

Considering the reaction of hydrogen and oxygen to produce water.  If 24.6 g of water is produced and 2.9 g of hydrogen is used, the amount of oxygen needed is 21.87 grams

The best way to solve this question is to write out the reaction between hydrogen and oxygen that resulted in the formation of water.

So, we have:

\mathbf{ 2 H_2{(g)} + O_2{(g)} \to 2H_2O_{(l)}}

From the above reaction;

2 moles of hydrogen gas reacted with 1 mole of oxygen to produce 2 moles of water.

If;

  • 1 mole of O₂ = 32 grams of O₂
  • 2 mole of H₂O = 2 × 18 grams of H₂O
  • 2 mole of H₂O = 36 grams of H₂O

We can deduce that since 1 mole of O₂ produced 2 moles of H₂O;

Thus, 32 grams of O₂ is needed to produce 36 grams of H₂O.

∴

To produce, 24.6 grams of H₂O, we have:

\mathbf{=\Big(\dfrac{32 \times 24.6 }{36}\Big) grams }

= 21.87 grams of oxygen.

Therefore, we can conclude that the amount of oxygen needed is 21.87 grams.

Learn more about chemical reactions here:

brainly.com/question/1689737?referrer=searchResults

5 0
3 years ago
What is the temperature change of an 36-gram sample of water that had absorbed 695 Joules of heat? C = 4.18 J/g K
maks197457 [2]

The temperature change of a 36-gram sample of water is <u>4.61 K</u>

Temperature is the degree of the average kinetic energy of the debris in an item. while the temperature will increase, the movement of this debris additionally will increase. Temperature is measured with a thermometer or a calorimeter.

heat = msΔt

     695 Joule = 36 ×  4.186 × Δt

Δt   =  695/ 36 ×  4.186

      = <u>4.61 K</u>

Temperature is just a dimension that indicates the common kinetic energy of 1 atom or molecule. as a result, when we are saying something is warm or bloodless, we're generally using any other reference point to define the hotness and coldness of a frame.

Learn more about temperature here:-brainly.com/question/2339046

#SPJ9

6 0
1 year ago
Which of the following is an example of the conversion of electrical energy to electromagnetic energy?
GuDViN [60]
The ccorrect answer is C a generator tubrine
6 0
4 years ago
Read 2 more answers
What mass of agno3 can be dissolved in 250 g of water at 20 c?
Arisa [49]
More information please
3 0
4 years ago
Can you please explain to me what mole concept is<br><br>​
dybincka [34]

a mole is defined as the amount of substance that contains as many atoms, molecules, icons, electron or any other elementary entities as there are exactly 12 gm of. of carbon atoms. the number of 12 gm of. Is called Avogadro's number

3 0
4 years ago
Other questions:
  • How much is the chemotherapy in FeS2?explain
    11·2 answers
  • Given the following data:
    8·1 answer
  • A. Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium iodide.
    15·1 answer
  • If a sample of salt water has a measured concentration of 21.0 ppt, how many grams of salt are there in a 2.05 kg sample of this
    9·1 answer
  • Titanium has an HCP crystal structure, a c/a ratio of 1.669, an atomic weight of 47.87 g/mol, and a density of 4.51 g/cm3. Compu
    9·1 answer
  • Which of elements would you expect to form the following with copper? Substitutional solid solution with complete solubility Sub
    12·1 answer
  • When 10 grams of salt dissolve in 25 grams of water, what is the resulting mass of the mixture?
    13·1 answer
  • What is the density of an object that has a mass of 22 g and a volume of 1.76 mL?
    13·1 answer
  • Four hundred and fifty two
    7·1 answer
  • No links please. How many moles of methane (CH4) are in 7.31x10^25 molecules?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!