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
bija089 [108]
3 years ago
8

Tiffany was investing how fast it took Hayden to react to different sounds. Identify the independent variable.

Chemistry
1 answer:
Hatshy [7]3 years ago
7 0

Answer:

The different sounds

Explanation:

since it can not be changed

You might be interested in
What are the 3 most important ecosystem services of a coral reef
kkurt [141]
2 Corsls provide treatments
3 0
3 years ago
Read 2 more answers
Consider the reaction:
murzikaleks [220]

<u>Answer:</u> The formation of given amount of oxygen gas results in the absorption of 713 kJ of heat.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of oxygen gas = 83 g

Molar mass of oxygen gas = 32 g/mol

Putting values in above equation, we get:

\text{Moles of oxygen gas}=\frac{83g}{32g/mol}=2.594mol

For the given chemical equation:

2Fe_2O_3\rightarrow 4Fe+3O_2;\Delta H^o_{rxn}=+824.2kJ

<u>Sign convention of heat:</u>

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

By Stoichiometry of the reaction:

When 3 moles of oxygen gas is formed, the amount of heat absorbed is 824.2 kJ

So, when 2.594 moles of oxygen gas is formed, the amount of heat absorbed will be = \frac{824.2kJ}{3mol}\times 2.59mol=713kJ

Hence, the formation of given amount of oxygen gas results in the absorption of 713 kJ of heat.

7 0
3 years ago
What liquid is got from copper ii and Ammonia gas?​
11111nata11111 [884]

Answer:

deep blue solution of tetramminecopper [Cu(NH3)4]2+ complex ion.

Explanation:

6 0
2 years ago
"An unsaturated solution is formed when 80 grams of salt is dissolved in 100 grams of water at 40° celsius. This salt could be..
olchik [2.2K]

Answer:

3. NaNO3

Explanation:

Below the line on TABLE G in the reference tables at 40C

4 0
3 years ago
Pt2 science......<br><br> Select correct answer ♡!
Dafna1 [17]
E should be correct.

The color may change, precipitation may occur, bubbles may form, gas forms, and the temperature changes.

Mark if correct please!
6 0
3 years ago
Other questions:
  • What is the difference between the plasma and gaseous states of matter?
    10·1 answer
  • What is C6H5 called?
    6·2 answers
  • How does the Coriolis effect benefit people who travel by airplane?
    5·1 answer
  • What is meant by 3p^3
    9·1 answer
  • A chemist measures the energy change ΔH during the following reaction: C3H8 (g) +5O2 (g) →3CO2 (g) +4H2O (l) =ΔH−2220.kJ Use the
    7·1 answer
  • What is one use of the mineral gypsum fertilizer medicine wallboard electrical insulator
    14·2 answers
  • Once of the skills necessary for this experiment is dilution. If you have 1.95 mL of .806 M bleach, what will be the new concent
    6·1 answer
  • PLease answer the thing and explain why is that...
    11·1 answer
  • Pls help this a test for Google classroom
    10·1 answer
  • Write the IUPAC names for the following compounds.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!