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
Marizza181 [45]
3 years ago
7

Which is usually associated with a faster reaction rate? A. shaking pepper into the reactants B. removing heat energy from the r

eactants C. using a highly concentrated solution in the reactants D. using a solid with a low surface area in the reactants
Chemistry
1 answer:
Andrews [41]3 years ago
3 0

Answer:

C. Using a highly concentrated solution of the reactants  

Explanation:

If the solutions are more concentrated, there will be more collisions per second between the reactants, so the rate will be faster.

A. is wrong. Pepper might make you sneeze, but it won't make the reaction go any faster.

B is wrong. Removing heat will cause the molecules to slow down, so fewer of them will have energy to get over the activation energy barrier.

D. is wrong. If a reactant has a small surface area, fewer of the other reactant molecules will be able to collide with it, so the reaction will slow down.

You might be interested in
Which represents a balanced nuclear equation?
shtirl [24]

Answer: second answer

Explanation:

The thing is that every new nuclear cycle a new element forms and reduces an electron. I may be wrong but this is the most logical and scientifically correct answer

3 0
3 years ago
Molecules can be either positively or negatively charged depending upon their elemental arrangement
Nuetrik [128]
They are positively or negatively charged based on their electrical configuration of electrons*
For example an electronic configuration of 2,8,3 would have a negative charge if +3 since it needs to lose 3 electrons to gain the electrical configuration of a noble gas
2,8,1 would have a charge of +1 for the same reason
2,8,6 would be -2 since it is easier to gain 2 electrons that lose 6 electrons

Hope this helped :))
8 0
3 years ago
What are rotation and revolution and how do they affect Earth?
Ivenika [448]

Answer:

Rotation refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.

7 0
2 years ago
The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.
Kaylis [27]
Molecular equation:
H_{2}SO_{4}(aq) + 2NaOH(aq)--\ \textgreater \  Na_{2}SO_{4}(aq) + 2H_{2}O(l)

Complete ionic equation:

2H^{+}+SO_{4}^{2-} + 2Na^{+} +2OH^{-}--\ \textgreater \  2Na^{+}+SO_{4}^{2-} + 2H_{2}O(l)


Near 2H^{+},SO_{4}^{2-} ,  2Na^{+} , OH^{-} 

should be written (aq).

Remove ions that do not change from both sides

2H^{+} + 2OH^{-}=2H_{2}O

Net ionic equation:

H^{+}(aq) + OH^{-}(aq)=H_{2}O(l)

Answer is D.




8 0
3 years ago
What mass (g) of magnesium nitride (Mg3N2) can be made from the reaction of 1.22 g of magnesium with excess nitrogen? __Mg + __N
Citrus2011 [14]
<h3>Answer:</h3>

1.69 g Mg₃N₂

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Using Dimensional Analysis
  • Reactions RxN
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Unbalanced] Mg + N₂ → Mg₃N₂

[RxN - Balanced] 3Mg + N₂ → Mg₃N₂

[Given] 1.22 g Mg

[Solve] grams Mg₃N₂

<u>Step 2: Identify Conversions</u>

[RxN] 3 mol Mg → Mg₃N₂

[PT] Molar Mass of Mg - 24.31 g/mol

[PT] Molar Mass of N - 14.01 g/mol

Molar Mass of Mg₃N₂ - 3(24.31) + 2(14.01) = 100.95 g/mol

<u>Step 3: Stoich</u>

  1. [DA] Set up:                                                                                                      \displaystyle 1.22 \ g \ Mg(\frac{1 \ mol \ Mg}{24.31 \ g \ Mg})(\frac{1 \ mol \ Mg_3N_2}{3 \ mol \ Mg})(\frac{100.95 \ g \ Mg_3N_2}{1 \ mol\ Mg_3N_2})
  2. [DA] Multiply/Divide [Cancel out units]:                                                         \displaystyle 1.68873 \ g \ Mg_3N_2

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

1.68873 g Mg₃N₂ ≈ 1.69 g Mg₃N₂

8 0
2 years ago
Other questions:
  • Which characteristic of atoms is the basis for the order on the Periodic Table?
    12·2 answers
  • What is the best classification for this sample of crude oil?
    6·2 answers
  • Write a nuclear equation to represent radium-226 decaying to radon-222 plus an alpha particle.
    11·1 answer
  • A plane flew for 2 hours at 467 mph
    13·1 answer
  • Describe how a measuring cylinder can be used to measure the volume of gas produced
    11·1 answer
  • In which stage do cells spend most of their time?<br> Interphase
    8·2 answers
  • A fuse is a safety device that stops the flow of electricity when a circuit overheats
    13·1 answer
  • How many moles of carbon atoms is 7.72 x 10 ^24 atoms of carbon? Round to 2 decimal places
    8·1 answer
  • The capacity of a spoon.
    8·1 answer
  • The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!