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
Setler79 [48]
3 years ago
15

suppose you find a website that describes the rusting of a nail as a change to only the physical properties of iron. Would that

be accurate?
Chemistry
1 answer:
enot [183]3 years ago
8 0

Answer is no

The chemical reaction between iron and oxygen in the presence of moisture or water produces a new substance, which is the rust (iron oxide). In this case, it shows a chemical property.

You might be interested in
The compound NaCl is an example of a(n)
Oduvanchick [21]
NaCl or sodium chloride is composed of two metals: the cation is Na + while the anion is the Cl-. In this case, when two metals form a bond, valence electrons are transferred. NaCl is an ionic compound. In 2, upon chemical change, the properties of the compound resulting from the reaction are somewhat closely related from the elemental properties. 
4 0
3 years ago
Read 2 more answers
8. Neil pogo sticks from his locker to his science class. He travels 8 m east then 8 m west
jeyben [28]

Answer:

12

Explanation:

5 0
3 years ago
Which of the following statements about gamma rays are TRUE? I. Gamma rays have low energy II. Gamma rays are a form of light. I
OverLord2011 [107]

Answer:

the third one

Explanation:

6 0
3 years ago
Read 2 more answers
Which solution has a molality of 0.25m nacl?
Solnce55 [7]

Molality can be expressed by moles of solute over kilograms of solvent. The question asks the molality of 0.25m NaCl. 0.25m NaCl is equal to 0.25 moles of NaCl over 1 kg of water.

5 0
3 years ago
Read 2 more answers
For 100.0 mL of a solution that is 0.040M CH3COOH and 0.010 M CH3COO, what would be the pH after adding 10.0 mL 50.0 mM HCl?
damaskus [11]

Answer:

The pH of the buffer is 3.90

Explanation:

The mixture of a weak acid CH3COOH and its conjugate base CH3COO produce a buffer that follows the equation:

pH = pKa + log [A-] / [HA]

<em>Where pH is the pH of the buffer, pKa is the pKa of acetic acid (4.75), and [A-] could be taken as the moles of the conjugate base and [HA] the moles of thw weak acid.</em>

<em />

To solve this question we need to find the moles of the CH3COOH and CH3COO- after the reaction with HCl:

CH3COO- + HCl → CH3COOH + Cl-

<em>The moles of CH3COO- are its initial moles - the moles of HCl added</em>

<em>And moles of CH3COOH are its initial moles + moles HCl added</em>

<em />

Moles CH3COO-:

Initial moles  = 0.100L * (0.010mol / L) = 0.00100moles

Moles HCl = 0.010L * (0.050mol / L) = 0.000500 moles

Moles CH3COO- = 0.000500 moles

Moles CH3COOH:

Initial moles  = 0.100L * (0.040mol / L) = 0.00400moles

Moles HCl = 0.010L * (0.050mol / L) = 0.000500 moles

Moles CH3COO- = 0.003500 moles

pH is:

pH = 4.75 + log [0.000500] / [0.00350]

<em>pH = 3.90</em>

<em />

<h3>The pH of the buffer is 3.90</h3>
3 0
3 years ago
Other questions:
  • How many atoms of hydrogen are there in 3.0kg of ethane
    8·1 answer
  • If earth is 1.50 x 108 km from the sun, what is the distance in tm?
    12·1 answer
  • Which of the following would double the pressure on a contained gas at constant temperature?
    6·1 answer
  • What is the primary unit of mass
    6·1 answer
  • An boron isotope consist of 5 protons 5 electrons and 6 neutrons its mass number is ?
    14·1 answer
  • What element is found in liver and is needed to prevent anemia or “tired” blood?
    9·1 answer
  • Investigate and explain that when a force is applied to an object but it does not move, it is because another opposing force is
    9·2 answers
  • Carbon-14 has a half-life of 5715 years. It is used to determine the age of
    10·1 answer
  • A ________ alchohol has a -OH radical bonded to a central carbon atom.
    9·1 answer
  • plz help very many points so there better be an answer if u say i just need the points sorry i will report u.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!