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
sdas [7]
3 years ago
12

1. Analysis of an unknown substance formerly used in rocket fuel reveals a composition of 93.28% nitrogen and 6.72% hydrogen by

mass. Further analysis determines the molar mass to be 30.04g/mol. Determine the molecular formula of the unknown.
*please show step by step process!!!*
Chemistry
1 answer:
Nitella [24]3 years ago
6 0

Answer:

The formula of the compound is:

N2H2

Explanation:

Data obtained from the question:

Nitrogen (N) = 93.28%

Hydrogen (H) = 6.72%

Next, we shall determine the empirical formula for the unknown compound. This is illustrated below:

N = 93.28%

H = 6.72%

Divide by their molar mass

N = 93.28 /14 = 6.663

H = 6.72 /1 = 6.7

Divide by the smallest

N = 6.663 / 6.663 = 1

H = 6.72 /6.663 = 1

Therefore, the empirical formula is NH.

Now, we can obtain the formula of the compound as follow:

The formula of a compound is simply a multiple of the empirical formula.

[NH]n = 30.04

[14 + 1]n = 30.04

15n = 30.04

Divide both side by 15

n = 30.04/15

n = 2

Therefore, the formula of the compound is:

[NH]n => [NH]2 => N2H2

You might be interested in
Which is NOT a chemical reaction?
Sophie [7]
A is correct because there is no reaction involved
6 0
3 years ago
Read 2 more answers
How many half-lives will pass by the time 1.56% of I-131 is present? B. Approximately how many days does that equal? *
serg [7]

Answer: Hmmmmm that's crazy....

There are a couple of equations one could use for this type of problem, but I find the following to be the easiest to use and to understand.

Fraction remaining (FR) = 0.5n

n = number of half lives that have elapsed

In this problem, we need to find n and are given the FR, which is 1.56% or 0.0156 (as a fraction).

0.0156 = 0.5n

log 0.0156 = n log 0.5

-1.81 = -0.301 n

n = 6.0 half lives have elapsed

Explanation:

Just wanted to help. Hopefully it's correct wouldn't want to waster your time ;)

6 0
2 years ago
The process where bacteria takes nitrogen out of the air and makes it usable for other organisms is called
Likurg_2 [28]

Answer:

The process is called Nitrogen fixation

Explanation:

The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.

7 0
3 years ago
Identify the type of reaction shown by this chemical equation:<br>2AI + 6HCI - 2AlCl3 + 3H2​
ArbitrLikvidat [17]

Answer:

Single displacement reaction

Explanation:

2AI + 6HCI —> 2AlCl3 + 3H2

From the above reaction, we see clearly that Al displaces H from HCl. This is clearly a single displacement reaction.

5 0
3 years ago
Please someone help I’m really confused
NARA [144]

Answer:10-3

Explanation:

7 0
3 years ago
Other questions:
  • What does photosynthesis mean?
    5·2 answers
  • Balance the following skeleton ionic reaction, and calculate E°cell to decide whether the reaction is spontaneous: Ag(s) + Cu2+
    15·2 answers
  • The element is abundant in earths crust and combines with oxygen to form rocks and minerals. what element is it?
    13·1 answer
  • What pressure will be exerted by 26g if CO2 at a temperature of 35C and a volume of 550ml?
    8·1 answer
  • If the copper cube had a mass of 28.7 grams and a volume of 3.2 mL, what would its density be?
    12·1 answer
  • Calculate the heat that must be supplied to
    10·1 answer
  • Describe the effects of temperature and pressure on solubility. If you had used boiling water instead of lukewarm water, would y
    15·1 answer
  • The calculation of quantities in chemical equations are called...
    14·1 answer
  • Carbon fixation occurs during the light reactions.
    14·2 answers
  • Please help guys
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!