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
valkas [14]
3 years ago
5

5. Sodium peroxide reacts vigorously with water in the following unbalanced equation:

Chemistry
1 answer:
Rasek [7]3 years ago
7 0

Answer:

30.7 g of O₂ are produced

Explanation:

This is a redox reaction, where the peroxide is reduced to oxygen and oxidized to hydroxide. The equation is this one:

2Na₂O₂ + 2H₂O → 4NaOH + 3O₂

We assume that water is in excess, so the peroxide is the limiting reagent.

We convert the mass to moles: 50 g . 1mol / 78 g = 0.641 moles

2 moles of peroxide can produce 3 moles of oxygen (according to stoichiometry)

Then, 0.641 moles of peroxide will produce (0.641 . 3 ) /2 = 0.961 moles O₂

Finally, we convert the moles to mass: 0.961mol . 32 g / 1mol = 30.7 g of O₂

You might be interested in
Convert each quantity to the indicated units. a. 3.01g to cg. b. 6200m to km
miss Akunina [59]

a. 301 cg

b. 6.2 km

Explanation:

a. knowing that 1 gram (g) is equal to 100 centigrams (cg) we devise the following reasoning:

if        1 g is equal to 100 cg

then  3.01 g are equal to X cg

X = (3.01 × 100) / 1 = 301 cg

b. knowing that 1 kilometer (km) is equal to 1000 meters (m) we devise the following reasoning:

if         1 km is equal to 1000 m

then   Y km are equal to 6200 m

Y = (6200 × 1) / 1000 = 6.2 km

Learn more about:

converting units of measurement

brainly.com/question/11300981

#learnwithBrainly

5 0
3 years ago
Dr. Patel and her team have been using GPS to track two plates that are moving toward each
Andru [333]

C: One plate is going underneath the other plate and sinking into the soft rock below.

Explanation:

Where plates are moving towards each other they are said to converging, and are called convergent margins.

The lithosphere is broken into series of slabs called plates. The plates moves on the weak and relatively soft asthenosphere below.

Plates have different motion. At some places, they move apart and they are said to be divergent.

When plates moves towards each other, they are convergent. At a convergent margin, a plate collides with another thereby causing the denser plate usually the oceanic plate to subduct into the asthenosphere. In some other cases, the plates can collide and build upward.

Learn more:

Lithosphere brainly.com/question/9582362

#learnwithBrainly

7 0
3 years ago
10. What effect does temperature have on molecular motion? Using this explanation, explain why both pressure and volume can decr
vovangra [49]

Answer:

If the temperature increases the molecular movement as well, and if it increases the same it will happen with the molecular movement.

Pressure, volume and temperature are three factors that are closely related since they increase the temperature, the pressure usually decreases due to the dispersion of the molecules that can be generated, so the volume also increases.

If the temperature drops, the material becomes denser, its molecules do not collide with each other, their volume and pressure increases.

Explanation:

The pressure is related to the molecular density and the movement that these molecules have.

The movement is regulated by temperature, since if it increases, the friction and collision of the molecules also.

On the other hand, the higher the volume, the less pressure there will be on the molecules, since they are more dispersed among themselves.

(in the opposite case that the volume decreases, the pressure increases)

5 0
3 years ago
What is polyethylene??defination​
rewona [7]

Answer:

a tough, light, flexible synthetic resin made by polymerizing ethylene, chiefly used for plastic bags, food containers, and other packaging.

Explanation:

8 0
3 years ago
Read 2 more answers
The threat of another hurricane is a problem for New York City. What have people
Maksim231197 [3]

Answer:

idk

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • consideras util conocer las propiedades extensivas e intensivas de los insumos utilizados para la elaboración de producto ¿por q
    14·1 answer
  • What are the four points of food safety?​
    13·1 answer
  • A bowling ball (mass = 7.2 kg, radius = 0.10 m) and a billiard
    6·1 answer
  • Why would it be difficult to sift the iron fillings from the sand
    7·1 answer
  • A 25.0 mL solution of a monoprotic weak acid is titrated with 0.10 M NaOH. The equivalence point is reached after 38.52 mL of Na
    8·1 answer
  • 38 POINTS - PEER COUNSELING 2 QUESTION
    6·2 answers
  • A/1 * B/C = D
    7·1 answer
  • Help quick! Will mark brainlest!
    7·1 answer
  • If an area bans pesticides and fertilizers to clean up the water supply, how might this affect farmers or food resources in that
    15·1 answer
  • Levi is installing a heat pump. He installed the pipes two feet deep. He then installed the unit withín the house and
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!