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
galina1969 [7]
3 years ago
10

Finding number of atoms 9H2SO4

Chemistry
1 answer:
Molodets [167]3 years ago
7 0

Explanation:

23 are the number of atoms

You might be interested in
Consider the following reaction at 25 °C: 4Fe(s) + 3O2(g) ⇌ 2Fe2O3(s) An equilibrium mixture contains 1.0 mol Fe, 1.0 × 10–3 mol
tino4ka555 [31]

Answer:

Kc = Kc = 8.0 * 10^9

Kp = 5.5 *10^5

Explanation:

Step 1: Data given

Temperature = 25.0 °C

Number of moles Fe = 1.0 moles

Number of moles O2 = 1.0 * 10^-3 moles

Number of moles Fe2O3 = 2.0 moles

Volume = 2.0 L

Step 2: The balanced equation

4Fe(s) + 3O2(g) ⇌ 2Fe2O3(s)

Step 3: Calculate molarity

Molarity = moles / volume

[Fe] = 1.0 moles / 2.0 L

[Fe] = 0.5 M

[O2] = 0.001 moles / 2.0 L

[O2] = 0.0005 M

[Fe2O3] = 2.0 moles / 2.0 L

[Fe2O3] = 1.0 M

Step 4: Calculate Kc

Kc =1/ [O2]³

Kc = 1/0,.000000000125

Kc = 8.0 * 10^9

Step 5: Calculate Kp

Kp = Kc*(R*T)^Δn

⇒with Kc = 8.0*10^9

⇒with R = 0.08206 L*atm /mol*K

⇒with T = 298 K

⇒with Δn = -3

Kp = 8.10^9 *(0.08206 * 298)^-3

Kp = 5.5 *10^5

4 0
3 years ago
What happens to isotopes that are unstable?
Lesechka [4]

<u>Explanation:</u>

Isotopes are defined as the chemical species of the same element which differs in the number of neutrons. The isotopes which are unstable are known as radioactive isotope. A radioactive (unstable )isotope can undergo 3 decay process:

1. Alpha Decay: In this decay process, a larger nuclei decays into smaller nuclei by releasing alpha particle. The particle released has a charge of +2 and a mass of 4 units.

_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha

2. Beta-minus decay: In this decay process, a neutron gets converted into a proton and an electron. the particle released during this process is a beta-particle.

_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta

3. Beta-plus decay: In this decay process, a protons gets converted into a neutron and electron-neutrino particle. The particle released during this process is a positron particle.

_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta

Isotopes which are unstable in nature can undergo these 3 decay processes.

5 0
3 years ago
For a science project, Janet performs four experiments that are supposed to show a chemical reaction. She displays her results i
g100num [7]

Answer:

Experiment 1

Explanation:

I don’t know if this is right

5 0
3 years ago
Can someone help me? We literally started this unit yesterday and I got quarantined so I dont have a clue what im doing..
zloy xaker [14]

Answer:

Explanation:

Take out your periodic table.

The choices that have one 1 member of the periodic table on it are elements.

He is the symbol for Helium

O2 oxygen

C3 but this is really odd. It is Carbon but Carbon usually does not  combine in 3s.

The rest are all compounds (they are made up of the elements on the periodic table). For example

H2SO4

is made up of 2 Hydrogens

1 sulfur

4 oxygens.

All the others do exactly the same thing.

3 0
3 years ago
2 Which of the gases in air are elements? Explain how you can tell.​
Agata [3.3K]

Answer:

I'll explain.

Explanation:

The molecules of two different elements, nitrogen and oxygen, make up about 99 percent of the air. The rest includes small amounts of argon and carbon dioxide. Oxygen is the life-giving element in the air. You can tell because they're on the periodic table which is a table for elements.

5 0
2 years ago
Read 2 more answers
Other questions:
  • N a 3 P O 4 (aq)+L i 2 S O 4 (aq)→ Express your answer as a chemical equation. Enter NOREACTION if no reaction occurs. Identify
    10·1 answer
  • Anomalous data shows on a graph as a
    5·1 answer
  • If 35 ml of 6.0 m h2so4 was spilled, calculate the minimum mass of nahco3 that must be added to the spill to neutralize the acid
    7·1 answer
  • There are several reagents that can be used to effect addition to a double bond including: acid and water, oxymercuration–demerc
    13·2 answers
  • Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies.
    9·1 answer
  • Label the diagram below chapter 2
    15·1 answer
  • Giving brainliest to right answer
    10·2 answers
  • How and why do we see colors?
    11·1 answer
  • If 125 cal of heat is applied to a 60.0-g piece of copper at 24.0 °C, what will the final temperature be? The
    5·1 answer
  • A fecal transplant can work to cure a patient infected with a very harmful bacteria, such as C. difficile.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!