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
lisabon 2012 [21]
2 years ago
14

The melting of wax is a physical change, yet the burning of wax is a chemical change. what is the essential difference between t

he physical change and the chemical change of wax in a burning candle?
A. The burning of wax forms new compounds, while the melting of wax does not.
B. A higher temperature is needed to burn wax than to melt wax.
C. Melted wax can be separated into other substances, while solid wax cannot.
D. Melted wax is a different phase of matter than solid wax.
Chemistry
1 answer:
shtirl [24]2 years ago
3 0

C. Melted wax can be separated into other substance, which solid wax cannot.

You might be interested in
(b)Calculate the number of moles of CuSO4 that were in the impure sample of CuSO4(s) .
irga5000 [103]

Answer:

The questions are incomplete

Explanation:

(b) This question is incomplete. However to calculate the number of moles of CuSO₄ present in the impure sample. The formula below can be used;

number of moles = mass of CuSO₄ present in the impure sample ÷ molar mass of CuSO₄

(c) This question is also incomplete. However, to calculate the mass percentage of CuSO₄ present in the impure sample of CuSO₄, the formula below can be used.

Mass percentage of CuSO₄ =

mass of CuSO₄ present in the impure sample/mass of impure CuSO₄ × 100

Thus, the mass of the impure sample must be measured also since the actual mass of the CuSO₄ present in the impure sample must have been measured before calculating the number of moles.

6 0
3 years ago
CHEM HELP!
sweet [91]

So let's convert this amount of mL to grams:

\frac{13.6g}{1mL}*1.2mL=16.32g

Then we need to convert to moles using the molar weight found on the periodic table for mercury (Hg):

\frac{1mole}{200.59g}*16.32g=8.135*10^{-2}mol

Then we need to convert moles to atoms using Avogadro's number:

\frac{6.022*10^{23}atoms}{1mole} *[8.135*10^{-2}mol]=4.90*10^{22}atoms

So now we know that in 1.2 mL of liquid mercury, there are 4.90*10^{22}atoms present.

4 0
3 years ago
Which of the atoms below are least likely to violate the octet rule?
Levart [38]

Answer:

F i think i pretty sure F!!!!!!!!

5 0
3 years ago
3. compounds in which elements are held together by covalent bonds...keeps their own properties
stich3 [128]
The anserr is c that what i think
3 0
3 years ago
How many moles are in 0.06 grams of iron
Eva8 [605]
No of mole = reacting mass/ molar mass

No of mole = 0.06/56

No of mole = 0.00107mol....

Or...

1mole of iron contain 56gmol¯¹
:-x mole is contained in 0.06g

Porata
And you'll have..

x = 0.06/56

x = 0.00107mol.....
3 0
3 years ago
Other questions:
  • Consider a hydrogen atom in the ground state. What is the energy of its electron?
    8·2 answers
  • What is the mass of 1.650 mol of aluminum? How many aluminum atoms are in this quantity?
    8·1 answer
  • Which word equation shows hydrogen reacting with oxygen to form water?
    6·1 answer
  • Which element or elements are unbalanced in this equation?
    7·1 answer
  • Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. The diver must hold
    7·1 answer
  • What is Oxygen an
    11·1 answer
  • How many grams are in 6.60 moles of ZnO?
    7·1 answer
  • What advantage and disadvantage dose a light microscope have compared with an electron microscope
    15·1 answer
  • Why do we need to calibrate equipment​
    5·1 answer
  • PLEASE ANSWER 20 POINTS!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!