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
valina [46]
1 year ago
5

What is the answer for this question?

Chemistry
1 answer:
andrew11 [14]1 year ago
5 0

Answer:

See explanation, some might be graded as wrong if it's an automatic grading system but most

Explanation:

1. lose
2. valence
3. noble (Atoms don't actually always do this, but since the word gas is after the blank, it is the only option)

4. 4
5. have
6. 10

5 and 6 are a little ambiguous and could have many answers  

You might be interested in
Is oxygen an element?
laiz [17]
Yes oxygen is an element it is
the 8th element 
the second period
16th group
noble gas configuration [He]2s^22p^4
7 0
3 years ago
13) The velocity of an object dropped in air will continue to increase
melamori03 [73]

Answer:

Because due to the presence air resistance

7 0
3 years ago
A mixture of h2 and n2 has a density of 0.216 at 300k and 500 torr. what is the mole fraction composition of the mixture
natta225 [31]
We know that:
number of moles (n) = mass / molar mass

Now, from the general law of gases:
PV = nRT
where:
P is the pressure = 500 torr = 0.65 atm
V is the volume
n is the number of moles
R is the gas constant = 0.082
T is the temperature = 300 k
We will just rearrange this equation as follows:
P = nRT / V
Then we will substitute n with its equivalent equation mentioned at the beginning:
P = (mass x R x T) / (volume x molar mass) ......> equation I
Now, we know that:
density = mass / volume
We will substitute (mass/volume) in equation I with density as follows:
P = (density x R x T) / molar mass 
Rearrange this equation to get the mass as follows:
molar mass = <span>dRT/P = (0.216 x 0.082 x 300) / 0.65 = 8.4738 grams
</span>
From the periodic table:
molecular mass of hydrogen = 1 grams
molecular mass of nitrogen = 14 grams
Therefore:
molar mass of hydrogen = 2 x 1 = 2 grams
molar mass of nitrogen = 2 x 14 = 28 grams

We can assume that the number of moles of of each element is y.
We can thus build up the following equation:
2y + 28y = 8.4738
30y = 8.4738
y = 0.28246

Therefore:
mole fraction of hydrogen = 2 x 0.28246 = 0.56492
mole fraction of nitrogen = 28 x 0.28246 = 7.90888


4 0
3 years ago
Is this a gamma or alpha or beta decay​
daser333 [38]

Answer:

gamma

Explanation:

6 0
2 years ago
How many valence electrons does chlorine have ?​
Alex73 [517]

Answer:

I believe the answer is 7

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following statements is TRUE? Question 5 options: The emission spectrum of a particular element is always the same
    8·1 answer
  • Which radioisotope has the fastest rate of
    14·2 answers
  • What happens if I overshoot the endpoint in titration?
    15·1 answer
  • For a particular isomer of C8H18, the following reaction produces 5093.7 KJ of heat per mole of C8H18(g) consumed, under stander
    14·1 answer
  • The half-life of cesium-137 is 30 years. suppose we have a 200-mg sample.
    5·1 answer
  • Name the following hydrocarbons
    6·1 answer
  • Fungi do not contain chlorophyll. True False
    11·2 answers
  • How can you tell if a chemical equation is balanced
    8·1 answer
  • B) Sodium + Oxygen Sodium Oxide + Type of Reaction :
    7·1 answer
  • Give examples of how land resources are used in a city setting
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!