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
Paraphin [41]
3 years ago
8

Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water.

Chemistry
2 answers:
S_A_V [24]3 years ago
5 0

Answer: 35.5%

Explanation:

First we need to find the number of mole of 2.05g of N2H4

Molar Mass of N2H4 = (14x2) + (1x4)

= 28 + 4 = 32g/mol

Mass conc. of N2H4 = 2.05g

Number of mole = Mass conc /Molar Mass

Number of mole = 2.05/32 = 0.0641mol

Next, We need to find the volume (theoretical yield) occupied by this mole(0.0641mol) of N2H4, using the ideal gas equation.

n = 0.0641mol

P = 1atm

T = 295K

R = 0.082atm.L/mol /K

V =?

PV = nRT

1 x V = 0.0641 x 0.082 x 295

V = 1.5506L

The volume (1.5506L) obtained is the theoretical yield

But the experimental volume = 0.550 L

Percentage yield =( Experimental yield / theoretical yield) x100

= (0.550/1.5506) x 100

= 35.5%

Sindrei [870]3 years ago
3 0

Answer:

The percent yield of the reaction is 35 %

Explanation:

In the reaction, 1 mol of hydrazine reacts with 1 mol O₂ to produce 1 mol of nitrogen and 2 moles of water.

Let's verify the moles that were used in the reaction.

2.05 g . 1mol/ 32 g = 0.0640 mol

In the 100% yield, 1 mol of hydrazine produce 1 mol of N₂ so If I used 0.0640 moles of reactant, I made 0.0640 moles of products.

Let's use the Ideal Gases Law equation to find out the real moles of nitrogen, I made (real yield).

1atm . 0.550L = n . 0.082 . 295K

(1atm . 0.550L) / 0.082 . 295K = n → 0.0225 moles

Percent yield of reaction = (Real yield / Theoretical yield) . 100

(0.0225 / 0.0640) . 100 = 35%

You might be interested in
In the engineering design process what do engineers do immediately after testing a prototype
mote1985 [20]

Answer:

Iterate to improve the solution

Explanation:

apex

5 0
3 years ago
Calculate the number of miles of magnesium,chlorine, and oxygen atoms in 5.00 moles of magnesium perchlorate
Zigmanuir [339]

Answer:

5.00 mol Mg

10.0 mol Cl

40.0 mol O

Explanation:

Step 1: Given data

Moles of Mg(ClO₄)₂: 5.00 mol

Step 2: Calculate the number of moles of Mg

The molar ratio of Mg(ClO₄)₂ to Mg is 1:1.

5.00 mol Mg(ClO₄)₂ × 1 mol Mg/1 mol Mg(ClO₄)₂ = 5.00 mol Mg

Step 3: Calculate the number of moles of Cl

The molar ratio of Mg(ClO₄)₂ to Cl is 1:2.

5.00 mol Mg(ClO₄)₂ × 2 mol Cl/1 mol Mg(ClO₄)₂ = 10.0 mol Cl

Step 4: Calculate the number of moles of O

The molar ratio of Mg(ClO₄)₂ to Cl is 1:8.

5.00 mol Mg(ClO₄)₂ × 8 mol O/1 mol Mg(ClO₄)₂ = 40.0 mol O

4 0
3 years ago
grandma baked cookies. she gave 7 to sandy. she gave half of what were left, plus one to sue. she gave 3 to stan. then she gave
scoray [572]
I believe your answer is 23.
Credit: answers.yahoo.com

Hope this helps!
8 0
3 years ago
Which of the following is the simplest ketone used as an organic solvent?
Lyrx [107]

Answer: Option (d) is the correct answer.

Explanation:

A ketone is an organic functional group that contains a carbon and oxygen atom bonded together through a double bond, that is, C=O.

For example, acetone CH_{3}-CO-CH_{3} is a ketone.

Whereas a hydrocodone is a drug which is used to relieve from moderate to sever pain.It is mostly combined with other drugs and resulting in a chemical formula C_{18}H_{21}NO_{3}.C_{4}H_{6}O_{6}.

A camphor is a volatile white color substance with chemical formula C_{10}H_{16}O. It has aromatic smell and its taste is bitter.

A menthone is also an organic compound with chemical formula C_{10}H_{18}O.

Thus, we can conclude that out of the given options the simplest ketone used as an organic solvent is acetone.

3 0
3 years ago
Which of the following is the definition of an open physical system? A. a system that can be affected by the outside environment
sergey [27]

Answer:

A. a system that can be affected by the outside environment, by an exchange of matter or energy

5 0
3 years ago
Other questions:
  • I NEED HELP PLEASE!!
    8·1 answer
  • At constant volume, you cool a sealed, air-filled can, and the pressure reduces by half. What happens in this situation? The num
    6·1 answer
  • If a sample of matter cannot be separated by physical means, what can be said with certainty about that sample?
    8·1 answer
  • 1. How many moles of oxygen gas are required to react with 15.56 moles of hydrogen gas? (2 pts.)
    10·1 answer
  • Match the number of neutrons to the correct isotope by studying the atomic number and mass number of each isotope. Drag the item
    9·1 answer
  • Ano ang kaganapan na nangyari at nasabing nagsimula ang holy ramon empire​
    8·1 answer
  • Can someone help me with these?
    15·1 answer
  • What is a resistor that can stop most
    5·1 answer
  • Calculate the pH when 60.0 mL of 0.200 M HBr is mixed with 30.0 mL of 0.400 M CH₃NH₂ (Kb = 4.4 × 10⁻⁴).
    10·1 answer
  • Blank + BaCl2 = BaSO4 + 2NaCl
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!