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
Natasha_Volkova [10]
2 years ago
7

What color did you observing of marker?not color its a pure of in​

Chemistry
1 answer:
Gekata [30.6K]2 years ago
7 0
Blue and purple and red
You might be interested in
27 Which energy conversion must occur in an operating electrolytic cell?
Vitek1552 [10]
<u> electrical energy to chemical energy</u>
5 0
3 years ago
Which of the following is accurate in describing the placement and classification of iodine?
fenix001 [56]
You can answer this question by only searching the element in the periodic table.

The atomic number of iodine, I, is 53. It is placed in the column 17 (this is the Group) and row 5 (this is the Period).

The conclusion is that the iodine is located in Period 5, Group 17, and is classified as a nonmetal.
4 0
2 years ago
Ions that are present before and after a neutralization reaction are
VikaD [51]

Answer:

spectator ions

Explanation:

8 0
3 years ago
Number of stable isotopes in Hydrogen?
kari74 [83]
3.
protium (A = 1), deuterium (A = 2), and tritium (A = 3).
5 0
2 years ago
Read 2 more answers
The heat of fusion AH, of ethyl acetate (C4H802) is 10.5 kinol. Calculate the change in entropy as when 398. g of ethy, acetate
Hitman42 [59]

<u>Answer:</u> The entropy change of the ethyl acetate is 133. J/K

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of ethyl acetate = 398 g

Molar mass of ethyl acetate = 88.11 g/mol

Putting values in above equation, we get:

\text{Moles of ethyl acetate}=\frac{398g}{88.11g/mol}=4.52mol

To calculate the entropy change for different phase at same temperature, we use the equation:

\Delta S=n\times \frac{\Delta H_{fusion}}{T}

where,  

\Delta S = Entropy change  = ?

n = moles of ethyl acetate = 4.52 moles

\Delta H_{fusion} = enthalpy of fusion = 10.5 kJ/mol = 10500 J/mol   (Conversion factor:  1 kJ = 1000 J)

T = temperature of the system = 84.0^oC=[84+273]K=357K

Putting values in above equation, we get:

\Delta S=\frac{4.52mol\times 10500J/mol}{357K}\\\\\Delta S=132.9J/K

Hence, the entropy change of the ethyl acetate is 133. J/K

7 0
3 years ago
Other questions:
  • A sound is first produced by making something BLANK . The sound then travels through a BLANK to reach the ears, which are the pa
    12·1 answer
  • Given 6.98 x 10 4 power grams of iron, calculate the moles of iron present
    15·1 answer
  • What is the alkaline earth metal with the largest atomic number
    12·2 answers
  • What is the molar mass of an unknown gas with a density of 2.00 g/L at 1.00 atm and 25.0 °C?
    5·1 answer
  • What is meant by the term chemical reaction​
    14·1 answer
  • Ca(OH) =CaO + H2O
    12·1 answer
  • What effect would a latitude of 60° have on the climate?
    11·1 answer
  • Answer the question given in the photo below
    6·1 answer
  • A kitchen worker at a local hospital was filling salt shakers. For those patients on a sodium restricted diet due to high blood
    13·1 answer
  • Assertion (A): Naphthalene balls disappear with time without leaving any solid.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!