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
Kay [80]
3 years ago
11

2. Find the molar mass for: FeCl2 • 5H20

Chemistry
1 answer:
riadik2000 [5.3K]3 years ago
8 0

Answer:

Molar mass = 216.8254 (approx.)

Explanation:

Given:

FeCl2 • 5H20

Find:

Molar mass

Computation:

Atomic mass

Fe = 55.845

Cl = 35.453

H = 1.00794

So,

FeCl2 • 5H20

55.845 + 2(35.453) + (2)5(1.00794) + 5(15.999)

55.845 + 70.906 + 10.0794 + 79.995

Molar mass = 216.8254 (approx.)

You might be interested in
HC2H3O2 (aq) + H2O (l) ⇔ C2H3O2- (aq) + H3O+ (aq) Ka = 1.8 x 10-5
marin [14]

The concentration of [H3O⁺]=2.86 x 10⁻⁶ M

<h3>Further explanation</h3>

In general, the weak acid ionization reaction  

HA (aq) ---> H⁺ (aq) + A⁻ (aq)  

Ka's value  

\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}

Reaction

HC₂H₃O₂ (aq) + H₂O (l) ⇔  (aq) + H₃O⁺ (aq) Ka = 1.8 x 10⁻⁵

\tt Ka=\dfrac{[C_2H_3O^{2-}[H_3O^+]]}{[HC_2H_3O_2]}}\\\\1.8\times 10^{-5}=\dfrac{0.22\times [H_3O^+]}{0.035}

[H₃O⁺]=2.86 x 10⁻⁶ M

5 0
3 years ago
In this assignment, you will write and balance a chemical equation. Then, you will use a table of enthalpy values to calculate t
olganol [36]

Answer:

2 H2(g) + O2(g) → 2 H2O(ℓ) ΔH = −570 kJ

Explanation:

8 0
3 years ago
If a helium filled ballon has a volume of 3.4l at 25°c and 1.18atm., what is its volume at STP?​
vladimir2022 [97]

Answer:

3.711 L

Explanation:

The formula you need to use is the following:

\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\

3.4L / 298 K = V2 / 273 K

V2 = 3.711 L

5 0
3 years ago
There is a theory that gravity could pull galaxies back together, causing a reverse big bang.
Mrrafil [7]

C. the expansion of the universe is accelerating

8 0
3 years ago
Read 2 more answers
A gas has a volume of 52.1 L at 1.55 atm. What is the new volume at a pressure of 2.00 atm?
Deffense [45]

Answer: 40.38 L

Explanation:

Formula: P1V1 = P2V2

(1.55)(52.1) = (2.00)(x)

80.755 = 2x

40.38 = x

6 0
3 years ago
Other questions:
  • In the mass spectrum of the molecule phenol, C6H5OH, the approximate intensity of the peak at m/z 95, relative to the molecular
    9·1 answer
  • Why is Jupiter so much larger than earth ? Check all that apply .
    6·1 answer
  • ''Particles have forces of attraction between them" PLEASE HELP ME WRITE A SHORT PARAGRAPH ABOUT THIS
    15·1 answer
  • The chemistry teacher asked George to transfer an ideal gas from container A to container B. Container B is half the size of con
    8·2 answers
  • A researcher discovers a new bacterium that lives on the seafloor near hydrothermal vents. This organism reduces CO2 to form C6H
    8·1 answer
  • A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result.
    7·1 answer
  • What are the names of the elements which are gases in the air
    10·2 answers
  • Which has more calories: table sugar or aspartame?
    6·1 answer
  • How many grams of CO2 will be produced from 39 grams of C3H8 and 11 grams of O2
    9·1 answer
  • A student heats a LaTeX: 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube w
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!