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
gogolik [260]
3 years ago
15

How do I answer the question in bold? Thank you!

Chemistry
1 answer:
Anarel [89]3 years ago
8 0

Answer:

6.7855 * 10^18

Explanation:

There are 2 moles in H2

Avagadro's number: 6.022E23

8.14E42*1/6.022E23 * 1/2

=6.7855 * 10^18

You might be interested in
A 0.286-g sample of gas occupies 125 ml at 60. cm of hg and 25°
irga5000 [103]
Using the Equation: PV=nRT
Where P is the pressure 60 cmHg or 600 mmHg or 600/760= 0.789 atm
V is the volume 125 ml or 0.125 L, n is the number of moles, R is a constant 0.082057, and T is temperature 25 °C or 298 K; 
Therefore:
0.789 × 0.125 = n × 0.082057 × 298
 n = 0.0987/24.45 
    = 0.004036 mol
0.004036 mole has a mass of  0.286 g
Hence; 1 mole has a mass of 0.286/0.004036 
  = 70.8 g /mol
Therefore the molar mass of the gas is 71 g/mol (2 sfg)

     

4 0
3 years ago
An atom of sodium can transfer its one valence electron to an atom of...
seropon [69]

Answer:

I believe it is B,fluorine to complete the octet rule

Explanation:

4 0
3 years ago
Read 2 more answers
There is a pattern to the phases of the moon. The time between one full moon to another is about a;new b;waxing crescent c;1st q
Strike441 [17]

Answer: a. new

Explanation:

The time between one full moon to another is new moon. The lunation is the average time taken for the formation of new moon to the next. The new moon is the initial visible crescent of the Moon after being conjugated with the Sun. Per lunar cycle can be assigned with a lunation number for the purpose of identification.

6 0
3 years ago
According to LOCO mass, the mass of reactants and products are what?
eimsori [14]

Answer:

Equal

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

3 0
2 years ago
Just a question... Worth 45 points!
Alex787 [66]

I believe the cup within another would keep it warm the longest because it would insulate the heat within the main cup, that or you could just leave it in a microwave ^-^

Hope this sorta helps XD

5 0
4 years ago
Read 2 more answers
Other questions:
  • One molecule of O2 is made of?
    7·2 answers
  • What is the Octet rule?
    8·2 answers
  • An ionic compound contains
    13·1 answer
  • How can you tell when a solution is formed?
    7·2 answers
  • Gerry is looking at an unknown element. He knows it has 1 valence electron and is highly reactive with water. What group is the
    8·1 answer
  • Which of the following is true about the mass of the reactants in a chemical reaction?
    15·1 answer
  • Is a volumetric flask calibrated to contain or to dispense?
    9·1 answer
  • A man drove his car through the Nevada desert one day when the temperature was over 100°F. When he started the trip, the gas sta
    9·1 answer
  • Pls help what the ratio ?.<br>enter your answer as an integer ​
    7·1 answer
  • Which of a following elements has the Smallest atomic radius 1. Ge 2. SI 3. Carbon 4. Sn​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!