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
kakasveta [241]
3 years ago
10

What is the mass, in grams, of

Chemistry
1 answer:
DIA [1.3K]3 years ago
4 0

Answer:

The answers to your question are below

Explanation:

a) 6.85×1020 H2O2 molecules

H2O2   MW = 32 + 2 = 34 g

                                    34g -------------------- 6.023 x 10²³ molecules

                                    x       -------------------  6.85 x 10 ²⁰

                                   x = (6.85 x 10 ²⁰)(34)/  6.023 x 10²³

                                   x = 0.038 g

3.3×1022 SO2 molecules

MW SO2 = 32 + 32 = 64g

                                    64 g -------------------- 6.023 x 10²³ molecules

                                    x      --------------------  3.3×1022 SO2 molecules

                                    x = (3.3×1022 SO2)(64) / 6.023 x 10²³

                                   x = 3.51 g

5.5×1025 O3 molecules

MW = 16 x 3 = 48g

                                 48 g -----------------   6.023 x 10²³ molecules

                                  x     ------------------   5.5×1025 O3 molecules

                               x = (5.5×1025 )(48) /  6.023 x 10²³

                               x = 4383 g

9.30×1019 CH4 molecules

MW = 12 + 4 = 16 g

                              16 g --------------------  6.023 x 10²³ molecules

                              x      --------------------   9.30×1019 CH4 molecules

                           x = (9.30×1019)(16) / 6.023 x 10²³

                           x = 0.0025 g

You might be interested in
What does the pH of a solution indicate
Nina [5.8K]
I think it’s B because I just know
8 0
3 years ago
The point in a titration at which the indicator changes is called the
irakobra [83]

Answer:

End point

Explanation:

The point at which the indicator changes color is called the endpoint. So the addition of an indicator to the analyte solution helps us to visually spot the equivalence point in an acid-base titration

#correct me if I'm wrong

keep safe and study hard

brainliest please thank you

8 0
3 years ago
SCIENCEEEE!!!!! HELPPPP!!!!
IRINA_888 [86]

pretty sure it's both are physical changes.

5 0
3 years ago
Read 2 more answers
The type of neuron that carries impulses from the brain are...​
jek_recluse [69]
It’s Sensory Neurons!
5 0
3 years ago
Iron filling's were mixed together with salt crystal's What unique property of iron would be BEST to separate the fillings from
Leto [7]

Answer:

Magnetic property

Explanation:

Iron filling is a magnetic compound, unlike the salt crystals. This means they are attracted by magnets.

To separate a mixture of iron filling s and salt crystals, a magnet should be used to remove the iron fillings from the mixture.

8 0
3 years ago
Other questions:
  • opisz jak rozdzielisz następujące mieszaniny na składniki z których powstały (nie zapomnijcie użyć nazw metod ): - mąka z groche
    5·1 answer
  • The large diversity of biological molecules depends on atoms of the element __________. this element can make stable bonds to it
    13·1 answer
  • What is the volume of 70.0 g of ether if density os 0.70 g/mL
    6·1 answer
  • What is the cell potential of an electrochemical cell that has the half -reactions shown below? Ni^ 2+ +2e Ni A| A|^ 3+ +3e^ -
    8·1 answer
  • Be sure to answer all parts. Consider both 5-methyl-1,3-cyclopentadiene (A) and 7-methyl-1,3,5-cycloheptatriene (B). Which label
    10·1 answer
  • An acetic acid buffer solution is required to have a pH of 5.27. You have a solution that contains 0.010 mol of Acetic acid. Wha
    5·1 answer
  • In a mixture of He, O, and N, gases He exerts a partial pressure of 15.22 mm Hg and
    14·1 answer
  • Taylor has $30,00 card that she con spend the store She already bought $9.00 ploture frame, she wants to $2.00 Journals with the
    9·1 answer
  • Alcohol or acid will travel the furthest up the paper chromatography? pls help thanks and explain
    14·1 answer
  • Makes up the core of the other planets<br> stars with an M and ends with E
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!