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
Bogdan [553]
2 years ago
9

Please help!!! Is the following example of synthesis? 2H2 + O2 —> 2H2O

Chemistry
1 answer:
aev [14]2 years ago
7 0

Answer:

hahahaa i can get the points

Explanation:

yes it is again LOL thanks

You might be interested in
The solubility of two slightly soluble salts of M^2+ , MA and MZ_2, are the same, 4 x 10^â4 mol/L.
LekaFEV [45]

Answer:

a) MZ₂

b) They have the same concentration

c) 4x10⁻⁴ mol/L

Explanation:

a) The solubility (S) is the concentration of the salt that will be dissociated and form the ions in the solution, the solubility product constant (Kps) is the multiplication of the concentration of the ions elevated at their coefficients. The concentration of the ions depends on the stoichiometry and will be equivalent to S.

The salts solubilization reactions and their Kps values are:

MA(s) ⇄ M⁺²(aq) + A⁻²(aq) Kps = S*S = S²

MZ₂(aq) ⇄ M⁺²(aq) + 2Z⁻(aq) Kps = S*S² = S³

Thus, the Kps of MZ₂ has a larger value.

b) A saturated solution is a solution that has the maximum amount of salt dissolved, so, the concentration dissolved is solubility. As we can notice from the reactions, the concentration of M⁺² is the same for both salts.

c) The equilibrium will be not modified because the salts have the same solubility. So, let's suppose that the volume of each one is 1 L, so the number of moles of the cation in each one is 4x10⁻⁴ mol. The total number of moles is 8x10⁻⁴ mol, and the concentration is:

8x10⁻⁴ mol/2 L = 4x10⁻⁴ mol/L.

7 0
3 years ago
7. How many chlorine atoms are in a 34.2 g sample of dichlorine pentoxide?
Reptile [31]

Answer:

The answer to your question is 1.36 x 10²³ atoms

Explanation:

Data

number of atoms = ?

mass of the sample = 34.2 g

Molecule = Cl₂O₅

Process

1.- Calculate the molar mass of Cl₂O₅

Cl₂O₅ = (35.5 x 2) + (16 x 5) = 71 + 80 = 151 g

2.- Calculate the atoms of Cl₂O₅

                     151 g of Cl₂O₅ ---------------- 6 .023 x 10²³ atoms

                       34.2 g of Cl₂O₅ ------------ x

                          x = (34.2 x 6.023 x 10²³) / 151

                          x = 1.36 x 10²³ atoms

4 0
3 years ago
The chemical equation may not be balanced with HCI + NaOH
Masja [62]

Answer:

idk

Explanation:

3 0
2 years ago
What do these two changes have in common sauce burning on a stove and jewelry tarnishing
Andrews [41]

The changes that are common between sauce burning on a stove, and jewelry tarnishing, which is a chemical change.

How to define chemical and physical changes?

Chemical Change-

Any alteration that produces new chemical substances with distinct properties is considered a chemical change. Chemical reactions involve the rearrangement and recombination of elements and compounds to create new substances. Examples of chemical changes are listed below:

  • Burning
  • Digestion
  • chemicals changing colors
  • Tarnishing
  • compost rotting

Physical Change-

A substance is not destroyed or transformed into something new by physical changes. A substance can undergo physical changes that alter its shape, size, or phase. The constituents of an element or compound do not change during a physical change. Examples of physical changes are listed below:

  • Boiling water
  • Chopping, Cutting, Carving
  • Evaporation
  • Freezing, Melting, Condensation

To know more about chemical and physical changes, visit the given link:

brainly.com/question/20628019

#SPJ4

5 0
1 year ago
Which of these 3 molecules is most polar? And which is the least polar? H2O, H2S, or SO2? Explain.
stepan [7]

Answer:so2

Explanation:

5 0
3 years ago
Other questions:
  • Look at the image below:
    12·1 answer
  • If an ice cube melts at 0ºC but water also freezes at 0ºC, what is the difference between melting and freezing in terms of…….
    7·1 answer
  • What is the mass of 6.00 cm^3 of mercury, density = 13.5939 g/cm^3?
    12·1 answer
  • A student wants to lift a 50 N backpack off of the floor. Tell me what will happen to the backpack depending on the amount of fo
    12·1 answer
  • Which term describes a section of Earht's structure below moving continents as parts of large plates?
    11·1 answer
  • 1) Your nephew rides a kiddy train at the local carnival. The train, which has
    8·1 answer
  • Which element below has the highest electronegativity? beryllium, carbon, fluorine, nitrogen
    8·2 answers
  • A word used to describe if one substance can be dissolved in another
    12·1 answer
  • A 2.650 grams sample of gas occupies a volume of 428cm^3 at a pressure of 99.06 kPa and 24.3˚C. Analysis of this compound reveal
    11·1 answer
  • Students conducting a lab investigation are given two unknown tubes of colorless aqueous solutions. The students are told that o
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!