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
Monica [59]
3 years ago
6

A 5.0-gram sample of Fe(s) is to be placed in 100. milliliters of HCl(aq). Which changes will result in the fastest rate of reac

tion? 1. increasing the surface area of Fe(s) and increasing the concentration of HCl(aq) 2. increasing the surface area of Fe(s) and decreasing the concentration of HCl(aq) 3. decreasing the surface area of Fe(s) and increasing the concentration of HCl(aq) 4. decreasing the surface area of Fe(s) and decreasing the concentration of HCl(aq)
Chemistry
1 answer:
sveta [45]3 years ago
6 0
The answer is <span>increasing the surface area of Fe(s) and increasing the concentration of HCl(aq). 

the rate of reaction can be increased if the interaction between the reactants in better. by increasing the surface area of a solid, such as Fe, you make more possible each molecule of Fe to interact with HCl. Also, by increasing the concentration of HCl, it mean there is more molecule of HCl to interact with Fe.</span>
You might be interested in
2. As NH4OH is added to an HCl solution, the pH of the solution
chubhunter [2.5K]

Answer:

c

Explanation:

Nh4OH + HCL ---> NH4Cl + H3O

so ph decreases as H3O increases

and OH also decreases

5 0
2 years ago
Read 2 more answers
Why do a planets speed change in orbit
gayaneshka [121]

According to Kepler's  second law of orbital motion, a plane's orbital speed changes , depending on how far it is from the sun. The closer a planet is to the sun, the stronger the sun's gravitational pull on it, and the faster the planet moves.  The farther away from the sun, the weaker the sun's gravitational pull and the slower it moves in its orbit.

The orbit of a planet around the sun is not  a perfect circle, but  an ellipse - a flattened circle.


3 0
2 years ago
Give me number of significant figures in the number 40
dangina [55]

1 significant figure, because there is no decimal after the zero the zero doesn't count.

5 0
3 years ago
Which equation best represents the net ionic equation for the reaction that occurs when aqueous solutions of potassium phosphate
laiz [17]

Answer:

2PO₄³⁻ + 3Fe²⁺ → Fe₃(PO₄)₂(s)

Explanation:

In a net ionic equation you list <em>only the ions that are participating in the reaction. </em>

When potassium phosphate, K₃PO₄, reacts with iron (II) nitrate, Fe(NO₃)₂ producing iron (II) phosphate, Fe₃(PO₄)₂ that is an insoluble salt. The reaction is:

2K₃PO₄ + 3 Fe(NO₃)₂ → Fe₃(PO₄)₂(s) + 6NO₃⁻ + 6K⁺

The ionic equation is:

6K⁺ + 2PO₄³⁻ + 3Fe²⁺ + 6NO₃⁻→ Fe₃(PO₄)₂(s) + 6NO₃⁻ + 6K⁺

Subtracting the K⁺ and NO₃⁻ ions that are not participating in the reaction, the net ionic equation is:

<h3>2PO₄³⁻ + 3Fe²⁺ → Fe₃(PO₄)₂(s)</h3>

8 0
3 years ago
Which characteristic of minerals is represented in this picture?
Marianna [84]
B is the correct answer to your question

7 0
3 years ago
Read 2 more answers
Other questions:
  • One atmosphere (atm) is equal to which of the following?
    11·2 answers
  • Please help me!!!!!!
    11·2 answers
  • Atoms of hydrogen can become helium atoms during a chemical reaction.<br> True<br> False
    6·2 answers
  • 1) A nonpolar covalent bond occurs: a. when one atom in a molecule has a greater affinity for electrons than another b. when a m
    12·1 answer
  • After a hypothesis is tested a scientist must do what next ?
    8·1 answer
  • Methyl bromide (CH3Br) is produced naturally by fungi. Methyl bromide has also been used in agriculture as a fumigant, but this
    12·1 answer
  • In the reaction below, 3.46 atm each of H2 and Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) &lt;=&gt
    13·1 answer
  • Who was the old woman that was in the temple during the presentation of Jesus​
    6·1 answer
  • M
    13·2 answers
  • What does chemistry have to do with drug testing
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!