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
Dmitry_Shevchenko [17]
3 years ago
5

What coefficient is missing in C2H4 + (?)O2 → 2CO2 + 2H2O?

Chemistry
1 answer:
Daniel [21]3 years ago
7 0

Answer:

3

Explanation:

you must multiply everything out till everything is equal on both sides

You might be interested in
Question 1
Lady bird [3.3K]

Answer:

Molecules vibrate in a fixed position.

Explanation:

first one is just wrong.

third is liquid

fourth is gas

4 0
3 years ago
When chlorine and magnesium react chemically, how many chlorine atoms will combine with one magnesium atom?
Lesechka [4]
Magnesium is divalent. This means that one magnesium atom needs to lose 2 electrons in order to become stable.

Chlorine, on the other hand, is monovalent. This means that one chlorine atom needs to gain one electron in order to become stable.

Based on this, one magnesium atom will combine with two chlorine atoms, where the magnesium loses two electrons, one for each chlorine.

The formula of the compound formed is: MgCl2
8 0
3 years ago
Write a chemical equation for NH4+(aq) showing how it is an acid or a base according to the Arrhenius definition. Express your a
Galina-37 [17]

Answer:

NH4+(aq)  → NH3(aq) + H+(aq)

Explanation:

Following arrhenius, an acid can be defined as:

An Arrhenius acid is a substance that, when added to water, increases the concentration of H+ ions in water.

NH4+(aq)  → NH3(aq) + H+(aq)

The ammonium ion acts as a weak acid in aqueous solution, dissociating into ammonia and a hydrogen ion.

An Arrhenius base is a substance that, when added to water, increases the concentration of OH- ions in water.

NH4+(aq) will not dissciate in OH- ions. So it's not a base, but an acid.

8 0
3 years ago
Help me please
kati45 [8]

Answ????

Explanation:

confused confused confused

5 0
3 years ago
If 26.2 grams of a pure compound contain 8.77 × 1022 molecules, what is the molecular weight of this compound? Answer in units o
Nataly [62]

Answer:

Mw = 179.845 g/mol

Explanation:

  • Mw [=] g/mol

∴ w = 26.2 g

∴ 1 mol = 6.02 E23 molecules.......Avogadro's number

⇒N° moles = 8.77 E22 molecules * ( mol / 6.02 E23 molecules ) = 0.146 mol

⇒ Mw = 26.2 g / 0.146 mol = 179.845 g/mol

3 0
3 years ago
Other questions:
  • Consider the reaction.
    7·2 answers
  • . If the combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy, how much heat
    13·2 answers
  • In the Haber Process, hydrogen (H2) and nitrogen (N2) react to produce
    11·1 answer
  • mastering biology ch 3 Water molecules have a polarity, which allows them to be electrically attracted to other water molecules
    7·1 answer
  • The solubility of gold (V) oxalate, Au2(C2O4)5 is 2.58 g/L. Calculate Ksp from this information.
    14·1 answer
  • Is air a mixture or pure substance ​
    12·1 answer
  • Please Help!!!!! Need by 11:30
    6·1 answer
  • Would a thermos without a lid with water in it be an open or closed system? I'm so confused... also please explain your answer,
    11·1 answer
  • What is hydrogen ?,,,​
    11·2 answers
  • propane (c3h8) is burned with air. for each case, obtain the balanced reaction equation for complete combustion a. with the theo
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!