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
Leviafan [203]
3 years ago
5

Escaping from the haunted house, Anna ran home immediately to her chemistry lab

Chemistry
1 answer:
nevsk [136]3 years ago
6 0
89.1% Au

The molar mass of Au2O3 is 2(196.97) + 3(16.00) = 441.94 g/mol
The mass percent of Au is therefore 2(196.97) / 441.94, which is 393.94/441.94 = 0.891 —> 89.1%
You might be interested in
Câu 36: _VD _Hình lập phương có thể tích là 1253 thì diện tích đáy là:
Gnesinka [82]

Answer:

c

Explanation:

5 0
3 years ago
Read 2 more answers
Which statements are true about Figure I and Figure II below? (Check all that apply)
Scilla [17]

Both figures are mixtures,

Figure II is a heterogenous mixture

Figure I is a homogenous mixture

5 0
3 years ago
The tiny particles of elements are called atoms.<br> True<br> False
nirvana33 [79]

Answer:

Hi there!

The answer to this question is: True

Atoms make up an element

7 0
3 years ago
Read 2 more answers
Julie takes a cold glass of clear, colorless liquid out of the refrigerator and puts it on the table. As the liquid warms up to
marysya [2.9K]
The bubbles indicate that there is a gas dissolved in the liquid, which may remain dissolved when the liquid is very cold, inside the refrigerator.


When the temperature of the liquid increases, it reduces its ability to dissolve the gas and the gas escapes (bubbles) from the liquid.


At the end, the behavior of the liquid permits  you to conclude that the  liquid is a mixture because it has a gas dissolved in it.
8 0
3 years ago
Read 2 more answers
Which of the following is the most electronegative element?
Kipish [7]
None of these; the most electronegative element is fluorine because an atom of fluorine needs an additional electron to join it's outer membrane, so the atom can achieve stability.

a flourine atom on its own is always a negative ion.


7 0
3 years ago
Other questions:
  • How many electrons will fit on an outermost shell of an atom? A. 4 B. 8 C. 10 D. 12
    9·1 answer
  • Which of the following statements is true about Planck’s Law?
    12·1 answer
  • An aqueous solution of licl is 34.0 % licl. what mass of water is present in 250.0 g of the solution? (density of water is 1.00
    10·2 answers
  • What happens when you add or change a subscript
    8·1 answer
  • Methane and chlorine react to form chloromethane, CH3Cl and hydrogen chloride. When 29.8 g of methane and 40.3 g of chlorine gas
    10·2 answers
  • A(n) _____ is a compound that produces hydrogen ions when dissolved in water.
    6·2 answers
  • What process takes place when hydrogen-3 and hydrogen-2 combine to form
    8·1 answer
  • A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
    6·1 answer
  • A cougar with a mass of 80 kg is standing at the edge of a cliff. Find the cougar’s potential energy if the cliff is 70 m high
    13·2 answers
  • What are some signs that a chemical change takes place when a firework explodes?Matter is destroyedLight is producedHeat is prod
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!