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
NARA [144]
3 years ago
15

when a log of wood burns, it undergoes a _______. a. physical change. b. chemical change. c. physical and a chemical change. d.

no physical or chemical change.
Chemistry
2 answers:
AlexFokin [52]3 years ago
6 0

B. chemical change because a new substance is forming with new properties.

statuscvo [17]3 years ago
3 0
B. Chemical change is the answer!<span />
You might be interested in
The process in which an organic acid and an alcohol react to form an ester and water is known as esterification. Ethyl butanoate
egoroff_w [7]

Answer:

697 g

Explanation:

Ethanol (C₂H₅OH) and butanoic acid (C₃H₇COOH) react to form ethyl butanoate (C₃H₇COOC₂H₅) and water (H₂O).

C₂H₅OH + C₃H₇COOH → C₃H₇COOC₂H₅ + H₂O

The molar ratio of C₂H₅OH to C₃H₇COOC₂H₅ is 1:1. The moles of C₃H₇COOC₂H₅ produced from 6.00 moles of C₂H₅OH are:

6.00 mol C₂H₅OH × (1 mol C₃H₇COOC₂H₅/1 mol C₂H₅OH) = 6.00 mol C₃H₇COOC₂H₅

The molar mass of C₃H₇COOC₂H₅ is 116.16 g/mol. The mass corresponding to 6.00 mol is:

6.00 mol × (116.16 g/mol) = 697 g

7 0
3 years ago
What would be the formula of the precipitate that forms when pb(no3)2 (aq) and k2so4 (aq) are mixed?
maria [59]
The formula of the ppt. formed is PbSo4 , which is inslouble.
6 0
3 years ago
She slams her fist onto the calculator with 8000 j of KE. If she moved her arm at 3 m/s, what is the mass of her fist?
Makovka662 [10]

Answer:

1777.7

Explanation:

kE =0.5mv^2

8000=9/2 m

1777.7

3 0
3 years ago
The length of a path between two points
lorasvet [3.4K]

Answer:

Displacement is the direction from the starting point and the length of a directly line from the starting point to the ending point.

8 0
3 years ago
Read 2 more answers
If you have a cup of water at 35 degrees Celsius, and a bath tub of water at 35 degrees Celsius which will melt the most ice and
ZanzabumX [31]
The bathtub of water would melt the most ice because it has a larger area
8 0
2 years ago
Other questions:
  • What is the chemical symbol for iron
    6·2 answers
  • Which compound, feco3 or pbbr2 is more soluble in acid than in base? why?
    13·2 answers
  • Consider the five balanced chemical reactions listed below, all using O2 as a reactant. Normally, O2 is an excess reagent for re
    5·1 answer
  • Hand disinfection is frequently recommended for prevention of transmission of the rhinovirus that causes the common cold. A tota
    6·1 answer
  • Can someone please check my answer?
    8·2 answers
  • A piece of sodium metal can be described as?
    9·2 answers
  • If 200mL of 0.60 M MgCl2 (aq) is added to 400mL of distilled water, what is the concentration of Mg2+(aq) in the resulting solut
    5·1 answer
  • Two factors that determine kinetic energy are
    8·2 answers
  • Which of these formulas is NOT consistent with the guidelines for creating ionic compounds? Mark all that apply.
    9·1 answer
  • How much heat is required to raise the temperature of 67.0 g of water from its melting point to its boiling point?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!