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
Levart [38]
3 years ago
11

HEEEELLLLPPPP PLS!!! ITS A COLLEGE PLACEMENT TEST

Chemistry
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

The percent composition for nitrogen in chromium(III) nitrate is 6%.

You might be interested in
Cuando se quema 1 mol de metano –o sea, 16 g–, se desprenden 802
Anvisha [2.4K]

Answer:

1 gramo de metano aporta 50.125 kilojoules.

1 gramo de metano aporta 48.246 kilojoules.

Explanation:

La cantidad de energía liberada por la combustión de una unidad de masa del hidrocarburo (Q), en kilojoules por mol, es igual a la cantidad de energía liberada por mol de compuesto (\bar {Q}), en kilojoules por mol, dividido por su masa molar (M), en gramos por mol:

Q = \frac{\bar Q}{M} (1)

A continuación, analizamos cada caso:

Metano

Q = \frac{802\,\frac{kJ}{mol} }{16\,\frac{g}{mol} }

Q = 50.125\,\frac{kJ}{g}

1 gramo de metano aporta 50.125 kilojoules.

Octano

Q = \frac{5500\,\frac{kJ}{mol} }{114\,\frac{g}{mol} }

Q = 48.246\,\frac{kJ}{mol}

1 gramo de metano aporta 48.246 kilojoules.

3 0
2 years ago
What takes place in organelles called chloroplasts
Vitek1552 [10]
Photosynthesis takes place in the chloroplasts, that is why the chloroplasts is green. The function of this organelles is to create energy into sugar from the sunlight.
5 0
2 years ago
Which of these solutes raises the boiling point of water the most?
Alekssandra [29.7K]
The answer is <span>ionic aluminum fluoride (</span>AlF3). Note that boiling points of pure solvents are raised in the presence of solutes. The type of solute also affects the boiling point elevation of the solution. Ionic substances tend to raise it more than covalent ones, so sucrose is out of the picture. Next, consider the number of ions the ionic substance produces. The more ions, the greater the BPE. AlF3 dissociates into 4 ions.
5 0
2 years ago
Read 2 more answers
What is the number of molecule(s)?
Gemiola [76]

1. 4NHCO3

2. 3CaCO3

3. 5NaC2H3O

4. 6NH3

5. 2CaCl2O2

ans ( a). NHCO3

5 0
3 years ago
Read 2 more answers
Please help quickly!
Galina-37 [17]

Answer:

Iron II - pale green

Copper II - blue

Iron III - orange /brown

Nickel - green

Iron and Copper

5 0
2 years ago
Other questions:
  • Using stoichiometry, determine the mass of powdered drink mix needed to make 1.0 M solution of 100 mL
    8·1 answer
  • Which of the following statements is true? A. Isotopes of the same element have the same number of protons and neutrons. B. Isot
    5·1 answer
  • Vinegar (C2H4O2) and baking soda (NaHCO3) react to form sodium acetate, water, and carbon dioxide.
    11·2 answers
  • Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 4.00 moles of aluminum sulfate, al2(so4)3. express the nu
    15·2 answers
  • Hydrogen gas explosive within range of 4%-75% v/v. Assuming that each student in your class produces 6 L of H2 and that the lab
    8·1 answer
  • What is the structure of beeswax that contains 16 carbon of carboxylic acid and 30 carbon of alcohol?
    6·2 answers
  • Calculate the volume in cm^3 of 325.0 dg of alcohol. Alcohol has a density of 0.785g/mL.
    12·1 answer
  • Why it is difficult to accurately represent ammonia two-dimensionally?
    15·1 answer
  • WILL GIVE BRAINLIEST FOR CORRECT ANSWERS W/ EXPLANATION
    7·1 answer
  • While finding the number of molecules of oxygen molecules present in 3.65 moles of Na2SO4 the conversion factor used would be
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!