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
MaRussiya [10]
3 years ago
5

What is the mass in grams of 9.45*10^24 molecules of methanol (CH3OH)?

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
6 0
Number of moles:

1 mole ---------- 6.02x10²³ molecules
? moles --------- 9.45x10²⁴ molecules

1 x ( 9.45x10²⁴) / 6.02x10²³ =

9.45x10²⁴ / 6.02x10²³ => 15.69 moles of CH3OH

Therefore:

Molar mass CH3OH = 32.04 g/mol

1 mole ------------ 32.04 g
15.69 moles -----  mass methanol

Mass methanol  = 15.69 x 32.04 / 1 => 502.7076 g


You might be interested in
In a relationship when is it a good time to say i love you?
kolezko [41]
After 4-6 months but i'm happy for you
5 0
3 years ago
A can of hairspray is crushed down to half its normal volume. What will
erik [133]

Answer:

pressure doubles

Explanation:

they are inversly preportional

6 0
3 years ago
How much heat does a 100. g sample of copper absorb when its temperature increases by 30.0°C? The specific heat of copper is 0.3
erica [24]

Answer:

\boxed {\boxed {\sf B. \ 1170 \ Joules }}

Explanation:

We are asked to find how much heat a sample of copper absorbs when the temperature is increased.

Since we know the mass, temperature increase, and specific heat capacity, we can use the following formula to calculate heat.

q= mc \Delta T

The mass of the copper sample is 100 grams, the temperature is changed or increased by 30.0 degrees Celsius, and the specific heat of copper is 0.39 Joules per gram degrees Celsius.

  • m= 100 g
  • c= 0.39 J/g °C
  • ΔT= 30.0 °C

Substitute the values into the formula.

q= (100 \ g )(0.39 \ J/g \textdegree C ) (30.0 \textdegree C )

Multiply the first two values. Note that the units of grams cancel.

q= 39 \ J/ \textdegree C (30.0 \textdegree C )

Multiply again, this time the units of degrees Celsius cancel.

q= 1170 \ J

The copper sample absorbs <u>1170 Joules</u> of heat and <u>Choice B </u>is correct.

7 0
3 years ago
Which of the following is not an example of a polymer?
drek231 [11]
Sucrose <span>is not an example of a polymer. The answer is letter C. Polystyrene, Nylon and PVC or poly vinyl chloride are examples of polymer</span>
7 0
3 years ago
Read 2 more answers
What makes matter change from one state to another?
posledela

Answer: Adding or removing energy from matter

Explanation:

4 0
2 years ago
Other questions:
  • The rate of product formation by an enzyme-catalyzed reaction would be increased by
    12·1 answer
  • In the following reaction, what coefficient will be written before the oxygen molecule (O2) to balance the chemical equation?
    5·1 answer
  • If an atom has 17 protons and 18 neutrons, what is the charge of the atom's nucleus?​
    15·1 answer
  • Calculate the molar mass of a gas at 506 torr and 99°c if 206 ng of gas occupies 0.206 ul. (
    9·1 answer
  • Emission of which one of the following leaves both atomic number and mass number unchanged?
    6·1 answer
  • Write the complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2).
    6·1 answer
  • Which of the following is not a theory supporting global warming?
    15·2 answers
  • Can anyone please help?
    10·1 answer
  • Please show proof for brainliest, i will rate you 5 stars if your answer is great!
    7·1 answer
  • What is the main difference between sexual and asexual reproduction
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!