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
REY [17]
3 years ago
8

Anwser this ASAP please

Chemistry
1 answer:
RUDIKE [14]3 years ago
3 0

Answer:

Its D :)

<em>Or not i haven't done this in a while-</em>

You might be interested in
Help I don’t understand it and I need the answers
il63 [147K]

Answer:

Demonstration 1 showed a chemical change because a new gaseous substance was formed, and demonstration 2 showed a physical change because liquid water became water vapor.

Explanation:

Chemical changes alter the chemical makeup of a subject, and a physical change only alters the appearance of a subject, not the chemical makeup.

4 0
2 years ago
Describe how to determine the rate law for an<br> overall reaction that involves multiple steps.
Zarrin [17]

Answer:

The sum of each elementary step in a reaction mechanism must yield the overall reaction equation. From the rate law of the rate-determining step it  must agree with the experimentally determined rate law. The rate-determining step is the slowest step in a reaction mechanism. Because it is the slowest, it determines the rate of the overall reaction.

Explanation:

5 0
3 years ago
A 4.27 g sample of a lab solution contains 1.81g of acid. What is the concentration of the solution as a mass percentage?
vaieri [72.5K]

Answer:

42.38875878%

Explanation:

i divided 4.27 g from 1.81g using a percentage calculator but im not sure if its correct

5 0
2 years ago
A sample of C3H8 has 3.28 × 1024 H atoms. How many carbon atoms does the sample contain? What is the total mass of the sample in
sammy [17]
To find the number of carbon atoms, we <span>multiply </span>the 3.28x10^24 by the ratio, 3/8. The total number of carbon atoms is 1.23 x 10^24 atoms. The total mass of the sample is each number of atoms divided by avogadro's number and multiplied by the molar mass of each. The total mass is 29.96 grams. 
7 0
3 years ago
Use the problem below to answer the question: How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimit
Pavlova-9 [17]
34g C * ( 1 mol / 12.0107 ) * ( 1 mol H2 / 1 mol C ) * ( <span>2.01588 g / 1 mol H2 ) = 5.70657164028741 g H2 = 5.7 g H2

Convert grams of C to moles of C using the given amount of grams and the molar mass ( 12.0107 g/mol ).

Gather the mole ratio from the coefficients in the balanced equation and multiply by the ratio.

Convert moles of H2 to grams of H2 </span> using the given amount of grams and the molar mass ( 2.01588 g/mol )<span>.

Revise your answer to have the correct number of significant figures. </span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • hat historical figure was responsible for developing the system for categorizing living things that is still used today? A) Sir
    11·1 answer
  • In the water cycle, clouds form as a result of _____?
    5·1 answer
  • How do water molecules in the solid phase compare with water molecules in the gaseous phase?
    14·1 answer
  • Where and why does Celiac Disease Occur?
    9·1 answer
  • A transverse wave is traveling from north to south. Which statement could be true for the motion of the wave particles in the me
    13·1 answer
  • Describe the heart and it’s function
    5·2 answers
  • who wants to be my pen pal if you want to know what that is it means a person who writes letters to each other.
    5·2 answers
  • C12H26O + SO3+NaOH ----&gt; C12H25NaSO4+ H2O
    6·1 answer
  • The analysis of a compound gives the following percent composition by mass:
    11·1 answer
  • How many moles of C5H120 would it take to generate 4.2 moles of CO2 from combustion?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!