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
SVETLANKA909090 [29]
3 years ago
11

P 4 + 5O 2 P 4 O 10 , 1.5 moles of product was made in 30 seconds. What is the rate of reaction? 0.011 g/min 210 g/min 380 g/min

850 g/min
Chemistry
2 answers:
poizon [28]3 years ago
8 0

Answer:

850 g/min

Explanation:

Airida [17]3 years ago
6 0

Answer: 850.0 g/min.

Explanation:

  • The rate of the reaction = (ΔC/Δt) where,

ΔC is the change in concentration of reactants or products.

Δt is the change in time of the reaction proceeding.

  • The rate is needed to be calculated in (g/min).
  • We need to calculate the amount of the product in (g) via using the relation (n = mass / molar mass).
  • mass (g) = n x molar mass,
  • n = 1.5 moles and molar mass of P₄O₁₀ = 283.88 g/mol.
  • m = 1.5 x 283.88 = 425.82 g.
  • ΔC = 425.82 g and Δt = 30 s / 60 = 0.5 min.
  • The rate of the reaction = ΔC / Δt = (425.82 g / 0.5 min) = 851.64 g/min.

<em>can be approximated to 850.0 g/min.</em>

You might be interested in
Question 19 (3 points)
dalvyx [7]

Answer:

c ) 29.4 psi

Explanation:

If the density of earth was twice than its actual density which is 5.51 g/mL, then at sea level the atmospheric pressure of earth in British units would be equal to 29.4 psi because increase of gravity, increase occurs in the atmospheric pressure.  If we double the gravity of earth by double of the earth density, so the weight of that same mass of air will be double which leads to the doubling of the atmospheric pressure at the sea level.

3 0
3 years ago
Which of these statements describes a chemical property
sp2606 [1]

Sugar burns in air describes a chemical property

<h3>Further explanation </h3>

In the matter of a substance, there is a process of change.

2 changes occur in the mater, namely: physical changes and chemical changes

Classification uses the principle of the initial and final state of the substance.

Physical changes are changes in the matter which in the process do not cause new substances. So the properties of the particles remain the same.

Generally, the physical changes that occur are changes in shape / size and changes due to heating, or changes in volume

Example:

  • melting

a solid changes to a liquid

  • freezing

a liquid changes to a solid

  • boiling

a solid changes to a liquid

Chemical changes are changes in the process that produce new substances that are different from the initial / forming substances. Chemical changes are usually known as chemical reactions. So there are products / reactions and reactants

So in chemical changes, there is a change in the molecule / particle

From this we can know the physical and chemical properties of a substance

  • physical properties:

melting point, viscosity, ductile, freezing point, boiling point, density, odor, solubilty, turbidity, color etc.

  • chemical properties:

Highly flammable, corroded, explosive, toxic etc.

Let's look at the answer choices in the attached picture

  • 1. water boils at 100 C

 physical properties of water that is boiling point

  • 2. mercury is liquid at room temperature

physical properties: the form of substances

  • 3. Helium is the lightest monoatomic element

physical properties: the weight or mass of a substance

  • 4. sugar burns in water to form water and carbon dioxide

chemical properties: the formation of new substances

<h3>Learn more </h3>

an example of a physical change

brainly.com/question/1119909

example of a chemical change brainly.com/question/9388643

examples of chemical changes brainly.com/question/11189422

7 0
3 years ago
Read 2 more answers
In the first half of the Citric acid cycle, ____________ is oxidized, yielding a pair of electrons that reduce a molecule of NAD
KiRa [710]

Answer:

Pyruvate, FAD, Acetyl CoA, Fumarate, Oxaloacetate

Explanation:

In the first half of the citric acid cycle pyruvate is oxidized,yielding a pair of electrons that reduce a molecule of NAD to NADH .Succinate is oxidized to fumarate using FAD as electron acceptor.A 2 carbon group from acetyl CoA enters the cycle.A second oxidation produces fumarate and 2 electrons.Malate is oxidized yielding a 4 carbon molecule of oxaloacetate and two electrons.

8 0
3 years ago
Explain why burning of wood and cutting it into small pieces are considered as two
Reika [66]

Answer:

When  wood is burnt , it turns into ashes which is a new substance and process is irreversible one,( chemical change)

When wood is cut into smaller pieces (firewood) this is a physical change

Explanation:

7 0
3 years ago
How does the study of science benefit society
Anika [276]
Because you lean about new things in life and mistakes we made in the past can help us now
5 0
3 years ago
Other questions:
  • How many molecules of CaCl2 are equivalent to 75.9g CaCl2 (Ca=40.08g/mol, CL=35.45g/mol)
    12·1 answer
  • Amount of liquid measured in L or Lm
    11·1 answer
  • A student claims that if she wanted to make a solution quickly, she should use small pellets instead of powder along with heatin
    8·1 answer
  • This is chemistry help
    6·1 answer
  • PLEASE SOMEONE! The density of the acetic acid solution is 1.05 g/mL. Calculate the %(m/m) of the acetic acid solution (convert
    12·1 answer
  • Why is it considered necessary to neutralize the industrial waste before allowing it to flow into the water bodies?
    5·1 answer
  • What is the molarity of a solution made by dissolving 1.25 mol of HCl in enough
    6·1 answer
  • I need to make sure of my answer
    8·1 answer
  • When elements form compounds, the elements
    11·1 answer
  • What is the titration​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!