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
Lerok [7]
4 years ago
14

How many molecules are there in 21.6 grams of CH4?

Chemistry
1 answer:
crimeas [40]4 years ago
7 0
See attachement for the answer to your question.

You might be interested in
What refers to the body’s inability to maintain a stable internal environment.
dalvyx [7]
One term could be allostasis, the opposite of homeostasis.

Other antonyms of homeostasis, the body's ability to maintain a stable internal environment, include imbalance, instability, etc.
8 0
3 years ago
Read 2 more answers
10. Copper(i) bromide reacts with magnesium metal: 2 CuBr + Mg → 2 Cu + MgBrz
velikii [3]

Answer:

72.6 grams

Explanation:

I got this answer through stoichiometry.  For every 1 mole of Mg, 2 moles of CuBr are consumed.  Because of this, multiply the moles of Mg by 2.  Then, convert moles to grams.

5 0
3 years ago
Read 2 more answers
Which property determines an atom's ability to attract electrons shared in a chemical bond?
ASHA 777 [7]
It is electronegativity.
4 0
3 years ago
Hemoglobin is the protein that transports oxygen in mammals. Different species of mammals have slightly different forms of hemog
Anna35 [415]

Answer;

= 64561.95 g/mole

Explanation;

mass of Fe in 100g = .346g

= .346 / 55.8452 moles

= 0.0061957 moles  

These represent 4 moles of Fe in the molecule so moles of hemaglobin

=  0.0061957/4  

= 0.0015489 moles  

these are in 100 g so mass of 1 mole = 100 / 0.0015489

= 64561.95 g / mole

molar mass of hemoglobin = 64561.95 g/mole

6 0
4 years ago
If the freezing point of an aqueous 0.10 m glucose solution is −x°c, what is the approximate freezing point of a 0.10 m nacl sol
maks197457 [2]
Answer is: the approximate freezing point of a 0.10 m NaCl solution is -2x°C.
V<span>an't Hoff factor (i) for NaCl solution is approximately 2.
</span>Van't Hoff factor (i) for glucose solution is 1.<span>
Change in freezing point from pure solvent to solution: ΔT = i · Kf · m.
Kf - molal freezing-point depression constant for water is 1,86°C/m.
m -  molality, moles of solute per kilogram of solvent.
</span>Kf and molality for this two solutions are the same, but Van't Hoff factor for sodium chloride is twice bigger, so freezing point is twice bigger.
8 0
3 years ago
Other questions:
  • What are the smallest division on a ruler?
    13·1 answer
  • Describe briefly the changes from the control values in the MEAN values for volume, specific gravity and NaCl after drinking pur
    5·1 answer
  • A chemist combines iodoethane (ch3ch2i with sodium hydroxide (naoh in an aqueous solution at 100°c. which change to the reaction
    7·2 answers
  • How does an objects mass influence how much force is needed to change its motion?
    13·2 answers
  • In a reversible reaction, chemical equilibrium is attained when the (A) rate of the forward reaction is greater than the rate of
    6·1 answer
  • How does changing the concentration of the reactants change the parts of a rate law? It changes the rate, R. It changes the rate
    11·1 answer
  • What is a semiconductor?
    12·1 answer
  • 3 H2 (g) + N2 (g) 2 NH3 (g)
    8·1 answer
  • When a predator population increases what happens to the prey population? Increase Decrease Dies Stays the same
    9·1 answer
  • How much kinetic energy does a 2kg object have if it is traveling at a velocity of 2m/s?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!