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
icang [17]
3 years ago
11

Molar mass for caffeine

Chemistry
1 answer:
Vika [28.1K]3 years ago
4 0

Answer:

194.19 g/mol

Explanation:

I hope this helps!

You might be interested in
Use your understanding of the ideal gas law to
PolarNik [594]

Answer:The ideal gas law is represented mathematically as: PV=nRT. P- pressure, V- volume, n-number of moles of gas, R- ideal gas constant, T- temperature.

Explanation:The ideal gas law is used as a prediction of the behavior of many gases, when subjected to different conditions.

he ideal gas law has so many limitations.

An increase in the pressure or volume, decreases the number of moles and temperature of the gas.

Empirical laws that led to generation of the ideal gas laws, considered two variables and keeping the others constant. This empirical laws include, Boyle's law, Charles's law, Gay Lusaac's law and Avogadro's law.

4 0
3 years ago
Read 2 more answers
What attractive force draws in surrounding electrons for chemical bonds?
Dmitrij [34]

The formation of chemical bonds occurs due to the attractive forces between oppositely charged ions (ionic bonds) or by sharing of electrons (covalent bonds).

An atom having tendency of attracting a shared pair of electrons towards itself and this chemical property is said to Electronegativity .

Thus, the attractive forces which draws in surrounding electrons for chemical bonds is electronegativity.

3 0
3 years ago
Read 2 more answers
Calculate the molar mass of Al(CH3O2)3
lina2011 [118]

Answer:

The molar mass and molecular weight of Al(CH3CO2)3 is 204.1136.

Explanation:

6 0
3 years ago
Read 2 more answers
What are some uses of metals?
VashaNatasha [74]
They are used to make plane bodies.
Some are used for electrical wires eg copper because they are good conductors of electricity.
Used in building materials.
used to make jewelry eg gold and silver<span />
4 0
3 years ago
Read 2 more answers
You are asked to prepare 500 mL 0.300 M500 mL 0.300 M acetate buffer at pH 4.904.90 using only pure acetic acid ( MW=60.05 g/mol
defon

Answer:

You will need 9,0 g of acetic acid

Explanation:

The equilibrium acetate-acetic acid is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺ pka = 4,76

Using Henderson-Hasselbalch you will obtain:

pH = pka + log₁₀\frac{[A^{-}]}{[HA]}

Where HA is acetic acid and A⁻ is acetate ion

4,90 = 4,76 + log₁₀\frac{[A^{-}]}{[HA]}

1,38 = \frac{[A^{-}]}{[HA]} <em>(1)</em>

As acetate concentration is 0,300M:

0,300M = [HA] + [A⁻] <em>(2)</em>

Replacing (2) in (1):

[HA] = 0,126 M

And:

[A⁻] = 0,174 M

As you need to produce 500 mL:

0,5 L × 0,126 M = 0,063 moles of acetic acid

0,5 L × 0,174 M = 0,087 moles of acetate

To produce moles of acetate from acetic acid:

CH₃COOH + NaOH → CH₃COO⁻ + Na⁺ + H₂O

Thus, moles of acetate are equivalents to moles of NaOH and all acetates comes from acetic acid, thus:

0,087 moles of acetate + 0,063 moles of acetic acid  ≡ 0,15 moles of acetic acid ×\frac{60,05 g}{1mol} = <em>9,0 g of acetic acid</em>

<em></em>

I hope it helps!

5 0
3 years ago
Other questions:
  • When comparing the colors of the following four compounds, which is most likely to appear green? [Co(CN)6]3− [Co(H2O)6]3+ [Co(en
    10·2 answers
  • Describe an experience you've had making or building something where the amount of each ingredient or building block came in fix
    12·1 answer
  • Give two reasons why the flame test is sometimes invalid
    8·2 answers
  • What will be the end product for each electrode after electrolysis if the solution is concentrated aqueous sodium chloride ?​
    15·1 answer
  • 1. A part of a neuron is a(n) A. nerve B. cell body C. receptor D. acetylcholine
    11·1 answer
  • Pure water has a pH of 7. Pure water _______.
    7·2 answers
  • Which element has similar chemical properties compared to Carbon (C)?
    13·1 answer
  • What is a controlled variable, a manipulated variable, and a responding variable in a science experiment??
    8·1 answer
  • This is what your screen should look like. start with Hydrogen -1 and drag 2 neutrons over the to the nucleus. What happens to t
    6·1 answer
  • Where are fusion reactions found
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!