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
Savatey [412]
3 years ago
14

11) What is the volume of 4.92 grams of hydrogen gas at STP? (Show the work using dimensional analysis)

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

The volume of 4.92 grams of hydrogen gas at STP is 9.105 litter.

Explanation:

We know that, the molecular weight of hydrogen gas (H_{2} ) = 1\times 2 = 2.

Moles of hydrogen gas = \frac{weight}{molecular weight}  = \frac{4.92}{2} = 2.46 moles.

At STP, 1 mole of hydrogen gas = occupies 22.4 litter

    So, 2.46 mole of hydrogen gas = occupies \frac{22.4}{2.46} = 9.105 litter.

Hence, the volume of 2.46 grams of hydrogen gas at STP is 9.105 litter.

You might be interested in
Please help ASAP
marta [7]

Answer:

0.1

Explanation:

We must first put down the equation of the reaction in order to guide our solution of the question.

2HNO3(aq) + Sr(OH)2(aq) -------> Sr(NO3)2(aq) + 2H2O(l)

Now from the question, the following were given;

Concentration of acid CA= ??????

Concentration of base CB= 0.299M

Volume of acid VA= 17.8ml

Volume of base VB= 24.7ml

Number of moles of acid NA= 2

Number of moles of base NB= 1

From;

CAVA/CBVB= NA/NB

CAVANB= CBVBNA

CA= CBVBNA/VANB

SUBSTITUTING VALUES;

CA= 0.299 × 24.7 ×2 / 17.8×1

CA= 0.8298 M

But;

pH= -log[H^+]

[H^+] = 0.8298 M

pH= -log[0.8298 M]

pH= 0.1

5 0
3 years ago
What is the coefficient for oh−(aq) when s2−(aq) no3−(aq) → s(s) no(g) is balanced in basic aqueous solution?
omeli [17]

From the balanced redox equation of the reaction, the coefficient of OH⁻ is 8.

<h3>What is the balanced redox equation of the reaction?</h3>

A redox equation is the equation of a redox reaction in which oxidation and reduction occurs simultaneously.

The given redox reaction takes place in a basic solution

The balanced redox equation of the reaction is given below:

4 H₂O(l) + 3 S²⁻(aq) + 2 NO₃⁻(aq) ---> 3 S(s) + 2 NO + 8 OH⁻(aq)

In conclusion, a redox equation is balanced when oxidation and reduction occur to the same extent.

Learn more about redox equations at: brainly.com/question/26750732

#SPJ1

5 0
2 years ago
Brian's family has a compost pile at home. They put all the weeds they pull up from the garden in it as well as any vegetable wa
gladu [14]

Answer:

Option - It would happen faster at warmer air temperatures

Explanation:

The chemical process of converting organic matter such as plants, litter into organic soil, or organic compost called decomposition and perform by decomposers such as fungus or bacteria.

Like all other living organisms, decomposers also live in an optimal range of temperature. The major decomposers normally lie in the range of 30 to 40-degree celsius. Any type of fluctuation in this range might slow down the reaction of decomposition.

7 0
3 years ago
6. STATEANSWERIN SIG FIGSOR g/cm3. What mass of silver in grams (g) would be required to cover a dimensions of 120.0 ft x 60.0 f
kogti [31]

Answer:

7.0643\times 10^8 grams of silver would be required.

Explanation:

Dimensions of silver mas :

Length = l =  120.0 ft

breadth = b = 60.0 ft

Height = h = 0.33 ft

Volume of silver mass ,V= l × b × h

V=120.0 ft\times 60.0ft\times 0.33 ft=2,376 ft^3=67,278,816 cm^3

1ft^3=28316.8 cm^3

Density of silver,d = 10.5 g/cm^3

Mass = Density\times Volume

m=10.5 g/cm^3\times 67,278,816 cm^3=7.0643\times 10^8 g

7.0643\times 10^8 grams of silver would be required.

7 0
3 years ago
When magnesium reacts with chlorine, the chlorine atom gain electrons. what happens to chlorine in this reaction?
Mrrafil [7]

Answer:

D

Explanation:

Reduction refers to gain in electrons. Hence it is D

Oxidation occurs when the element loses electrons. Hence A is wrong

7 0
3 years ago
Other questions:
  • How much H2 is generated from the electrolysis of 150 grams of H2O
    8·1 answer
  • The carbohydrates seen here contains 3 common elements.They are....
    11·2 answers
  • What variables affect whether or not the fishing weight floats?
    6·1 answer
  • Colors are in what part of the electromagnetic spectrum?
    15·1 answer
  • You measure the emission spectrum of an atom that you suspect to be hydrogen. You have no absolute calibration of the wavelength
    15·1 answer
  • When a scientific theory has been tested and proved by the scientific community, it
    10·2 answers
  • Which of these charges has the greatest magnitude
    10·1 answer
  • A sealed can of your favorite soda has a carbon dioxide gas (C0) volume of 0.05 L. When it is refrigerated, the
    13·1 answer
  • I really need help! If I have 17 moles of gas at a temperature of 67°C, and a pressure of 5.34 atmospheres, what is the volume o
    15·1 answer
  • If you were converting from milli- to centi- units, would you move the decimal point to the left or the right
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!