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
Marysya12 [62]
3 years ago
15

What is the only thing that changes in a chemical reaction

Chemistry
1 answer:
kirill [66]3 years ago
3 0
Bbbbbbbbbbbbbbbbbbbbb
You might be interested in
The molar mass of an unknown gas was measured by an effusion experiment. It was found that it took 60 s for the gas to effuse, w
Marizza181 [45]

Answer:

The molar mass of the gas is 44 g/mol

Explanation:

It is possible to solve this problem using Graham's law that says: Rates of effusion are inversely dependent on the square of the mass of each gas. That is:

\frac{r_1}{r_2} =\frac{\sqrt{M_2} }{\sqrt{M_1} }

If rate of effusion of nitrogen is Xdistance / 48s and for the unknown gas is X distance / 60s and mass of nitrogen gas is 28g/mol (N₂):

\frac{X/48s}{X/60s} =\frac{\sqrt{M_2} }{\sqrt{28g/mol} }

6,61 = √M₂

44g/mol = M₂

<em>The molar mass of the gas is 44 g/mol</em>

<em></em>

I hope it helps!

4 0
3 years ago
Need a bit of help with this. Fill in the coefficients, explain your answer.
sp2606 [1]

Answer:

4Fe + 3O₂ → 2Fe₂O₃

General Formulas and Concepts:

<u>Chemistry - Reactions</u>

  • Balancing Reactions

Explanation:

<u>Step 1: Define</u>

RxN:   Fe + O₂ → Fe₂O₃

<u>Step 2: Balance</u>

We need to balance both Fe and O.

LCM of 2 and 3 is 6:

Fe + 3O₂ → 2Fe₂O₃

We now need the same amount of Fe on both sides:

4Fe + 3O₂ → 2Fe₂O₃

4 0
3 years ago
A 72 g sample contains how many moles of water? (include appropriate sig figs in your answer)
sammy [17]

Answer:

2

Explanation:

yhhh&hhhhhhhhhhhhhhh

5 0
3 years ago
What are alluvial diamond fields?
hammer [34]

Answer:

Alluvial diamond mining occurs in riverbeds and beaches, where thousands of years of erosion and natural forces such as wind, rain, and water currents wash diamonds from their primary deposits in kimberlite pipes to beaches and riverbeds. Some alluvial deposits are from long-ago rivers.

3 0
2 years ago
The racoon is considered a secondary conkumer because...
anastassius [24]

Answer:

Hi there!

Your answer is:

A raccoon is a secondary consumer because it most commonly eats animals! It's food eats plants, making it's food a primary consumer. A raccoon is the second animal in the chain to eat!

I hope this helps!

7 0
3 years ago
Other questions:
  • a car is traveling 55.0 miles per hour . convert this to meters per second . one miles is equal to 1.61 km
    14·2 answers
  • *Giving Brainly with the points* Best answer gets it
    8·1 answer
  • Draw the structure of 4-chlorophthalic acid in the window below.
    7·2 answers
  • What mass of aluminum will be deposited on the cathode if an electric current of 0.15 a is run for 4 5s when a solution of al(no
    15·1 answer
  • If each NADHNADH generates 3 ATPATP molecules and each FADH2FADH2 generates 2 ATPATP molecules, calculate the number of ATPATP m
    6·1 answer
  • Value of an extensive property
    8·1 answer
  • Cite as principais características das tentativas de organização da Tabela periódica-Tríades de Dobereiner, o Parafuso Telúrico
    12·1 answer
  • The reaction P4 +502P4010 + 712 kcal is
    13·2 answers
  • A fruit-and-oatmeal bar contains 142 nutritional Calories. Convert this energy to calories
    12·1 answer
  • Would the plastic have a positive charge, negative charge, or no charge? *
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!