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
marshall27 [118]
3 years ago
11

Please help ^^ thank you

Chemistry
1 answer:
8090 [49]3 years ago
6 0
Idk the answer I’m just typing to get 100%
You might be interested in
When the temperature of a rigid hollow sphere containing 685 L of helium gas is held at 621 K, the pressure of the gas is 1.89 x
Leno4ka [110]
You have to use the equation PV=nRT.
P=pressure (in this case 1.89x10^3 kPa which equals 18.35677 atm)
1V=volume (in this case 685L)
n=moles (in this case the unknown)
R=gas constant (0.08206 (L atm)/(mol K))
T=temperature (in this case 621 K)
with the given information you can rewrite the ideal gas law equation as n=PV/RT.
n=(18.35677atm x 685L)/(0.08206atmL/molK x 621K)
n=246.8 moles
8 0
3 years ago
_Fe2O3+ ___C --> __Fe + ___CO2
aev [14]

Answer:

2, 3, 4, 3

Explanation:

this is the answer

4 0
3 years ago
Predict the sign of enthalpy for reaction f+f=f2
guajiro [1.7K]
6+6=12


is your answer
6 0
3 years ago
Describe the composition of humus and why it is an effective organic fertilizer.
asambeis [7]

Answer:

Humus, which ranges in colour from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur. As humus decomposes, its components are changed into forms usable by plants.

samira-

5 0
2 years ago
Effects of warm tropical waters meeting with cool air.
Mars2501 [29]
A hurricane.. I believe
6 0
3 years ago
Other questions:
  • What is the difference between the molar mass and the empirical formula mass of a compound? when are these masses the same, and
    5·1 answer
  • I have an important test coming up!!! i need help with thisss!!!!
    15·2 answers
  • When a chemical is in the gaseous state, it has definite mass, but its shape is independent of the shape of the container in whi
    8·1 answer
  • ) What is the definition of an enzyme? A.Enzymes are carbohydrate molecules that act as catalysts to speed up chemical reactions
    5·1 answer
  • Where do you think information is coded in a DNA molecule?
    14·2 answers
  • A type of energy that is stored is called?
    6·1 answer
  • An Equilibrium with Cobalt Complex Ions.Investigate the equilibrium between two different complex ions of cobalt. The reaction i
    7·1 answer
  • Consider the balanced equation below.
    14·1 answer
  • Helpppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • Calculate the pressure (in kpa) of 1.5 mole of helium gas at 354 k when it occupies a volume of 16.5l.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!