All categories

3 years ago

The process of burning means to react a substance with is oxygen

Chemistry

1 answer:

Musya8 [376]3 years ago

5 0

Answer: Combustion Reaction

Explanation: A substance reacts with oxygen

You might be interested in

Balance this equation. if a coefficient of "1" is required, choose "blank" for that box.

blondinia [14]

Step 1: Write Imbalance Equation

CH₃CHO + O₂   → CO₂ + H₂O

Step 2: Balance Carbon Atoms:
There are 2 carbon atoms at reactant side and one at product side. So multiply CO₂ with 2 to balance them. i.e.

CH₃CHO + O₂   → 2 CO₂ + H₂O

Step 3: Balance Hydrogen Atoms:
There are 4 hydrogen atoms at reactant side and 2 Hydrogen atoms at product side. So, multiply H₂O by 2 to balance Hydrogen on both sides. i.e.

  CH₃CHO + O₂   → 2 CO₂ + 2 H₂O

Step 4: Balance Oxygen Atoms:
There are 3 Oxygen atoms at reactant side and 6 Oxygen atoms at product side. In order to balance them multiply O₂ on reactant side by 2.5 (5/2). i.e

CH₃CHO + 5/2 O₂   →   2 CO₂ +  2 H₂O

Step 6: Eliminate Fraction:
Multiply overall equation by 2 to eliminate fraction. i.e.

2 CH₃CHO + 5 O₂   →   4 CO₂ +  4 H₂O

7 0

3 years ago

How many significant figures are in the following value: 0.035010

Serhud [2]

Answer:

5 significant figures

Explanation:

Brainliest?

5 0

3 years ago

Read 2 more answers

How can the concentration of a solution be changed

Vlad1618 [11]

The mass of the salt converted into moles divided by the liters of water in a solution would give the Molarity (M) or concentration of the solution. The simplest way to change the solution would be to change the amount of solute or solvent in a solution.

5 0

3 years ago

Copper(II) sulfide, CuS, is used in the development of aniline black dye in textile printing. What is the maximum mass of CuS wh

IrinaK [193]

Explanation:

The chemical reaction equation will be as follows.

$CuCl_{2} + (NH_{4})_{2}S \rightarrow 2NH_{4}Cl + CuS$

As 1 mole $CuCl_{2}$ reacts with 1 mole of $(NH_{4})_{2}S$

Hence, moles of $CuCl_{2}$ = Molarity × Volume (in mL)

= 0.5 × 38.0 mL

= 0.019 mol

Moles of $(NH_{4})_{2}S$ = Molarity × Volume (in mL)

= 0.6 × 42.0 mL

= 0.0252 mol

As moles of CuS is less than the moles of $(NH_{4})_{2}S$ . This means that CuS is the limiting reagent.

Thus, maximum moles of CuS formed are 0.019 mol. As molar mass of CuS is 95.6 g/mol.

Therefore, maximum mass of CuS can be formed is $95.6 g/mol \times 0.019 mol$

= 1.8164 g

Thus, we can conclude that maximum mass of CuS formed is 1.8164 g.

6 0

3 years ago

9. 6.59 g of ammonia (NH3, 17.031 g/mol) react completely in the presence of excess carbon dioxide (CO2, 44.01 g/mol) according

Katarina [22]

Answer:

The percent yield for the reaction is 63.7%

Explanation:

This problem can be solved, from different rules of three.

The reaction is:

2NH₃(g) + CO₂(g) → CH₄N₂O(s) + H₂O(l)

2 moles of ammonia, produce 1 mol of urea.

Mass / molar mass = moles

6.59g / 17.031 g/m = 0.387 moles

As ratio is 2:1, I will produce half a mole of urea.

(0.387 m . 1m)/ 2m = 0.193 m

Let's find out the mass.

Mass of urea = Moles of urea . molar mass of urea.

Mass = 0.193m . 60.056 g/m = 11.6 g

If the percent yield for the reaction was 100 %, we make 11.6 g, but I only obtained 7.40 g so let's calculate the new percent yield.

11.6 g ____ 100 %

7.40 g ___ (7.40g / 11.6g) .100 = 63.7 %

6 0

4 years ago