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
Sladkaya [172]
3 years ago
8

The diagram shows the box for an element in the periodic

Chemistry
1 answer:
mr_godi [17]3 years ago
6 0

Answer: A 13

Explanation: hope this helps!

You might be interested in
What mass of iron is formed when 10 grams of carbon react with 80 grams of iron iii oxide?
yKpoI14uk [10]

Answer:

55.85 grams of Fe is formed.

Explanation:

Identify the reaction:

2Fe₂O₃  +  3C  →  4Fe  +  3CO₂

Identify the limiting reactant, previously determine the mol of each reactant

(mass / molar mass)

10 g / 12 g/m = 0.83 moles C

80 g / 159.7 g /m = 0.500 moles Fe₂O₃

2 moles of oxide need 3 moles of C, to react

0.5 moles of oxide, will need ( 0.5  . 3)/ 2 = 0.751 mol

I have 0.83 moles of C, so C is the excess.

The limiting is the oxide.

3 mol of C need 2 mol of oxide to react

0.83 mol of C, will need (0.83  . 2)/ 3 = 0.553 mol of oxide, and I only have 0.5 (That's why Fe₂O₃ is the limiting)

Ratio is 2:4 (double)

If I have 0.5 moles of oxide, I will produce the double, in the reaction.

1 mol of Fe, will be produce so its mass is 55.85 g

5 0
3 years ago
When the following reaction comes to equilibrium, will the concentrations of the reactants or products be greater? Does the answ
Nutka1998 [239]

Answer:

At equilibrium, the concentration of the reactants will be greater than the concentration of the products. This does not depend on the initial concentrations of the reactants and products.

Explanation:

The value of Kc gives us an idea of the extent of the reaction. A big Kc (Kc > 1) means that in the equilibrium there are more products than reactants, and the opposite happens for a small Kc (Kc < 1). The equilibrium is reached no matter what the initial concentrations are.

The value of the equilibrium constant is relatively SMALL; therefore, the concentration of reactants will be GREATER THAN the concentration of products. This result is INDEPENDENT OF the initial concentration of the reactants and products.

4 0
3 years ago
Match each volcano with the type of lava it most likely releases.
Aneli [31]

Answer:

1: Balsatic

2:Rhyolitic

3:Andesitic

Explanation:

I did an investigation of the volcanoes

7 0
2 years ago
What element has 81 protons in the nuclei of its atoms?
WITCHER [35]
Thallium has got 81 protons

<u>Have a nice days.......</u>
7 0
3 years ago
Read 2 more answers
DNA Mutations
vitfil [10]

Answer:

Explanation:

A

6 0
3 years ago
Other questions:
  • At the beginning of this lesson, there was a question about two acids. Vinegar, which contains acetic acid, is used in foods and
    8·2 answers
  • What evidence of a chemical reaction might you see in bleaching a stain
    8·2 answers
  • Determine the identity of a cube of metal that measures 1.2 cm on each side and has a mass of 15.4g.
    10·2 answers
  • Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample’s volume?
    5·1 answer
  • Which property of metals allows aluminum to be flattened into thin sheets of aluminum foil?
    14·1 answer
  • A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 19.78 nm. What is the total wi
    9·1 answer
  • Pls help I don’t understand at all
    9·1 answer
  • I NEED HELP WITH THIS CHEMISTRY QUESTION PLS
    7·1 answer
  • ZnCo3 how do I decomposition this
    9·2 answers
  • How much heat is required to change 235 g of iodine at 25 degrees celsius into vapor at 198 degrees celsius? The melting point i
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!