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
Tasya [4]
2 years ago
5

What pair of elements would have the most similar properties based on their locations on the periodic table?

Chemistry
1 answer:
svetoff [14.1K]2 years ago
7 0

Answer:

..........

Explanation:

You might be interested in
Using the standard enthalpies of formation found in the textbook, determine the enthalpy change for the combustion of ethanol c2
ArbitrLikvidat [17]
Enthalpy of formation is calculated by subtracting the total enthalpy of formation of the reactants from those of the products. This is called the HESS' LAW.
ΔHrxn = ΔH(products) - ΔH(reactants)

Since the enthalpies are not listed in this item, from reliable sources, the obtained enthalpies of formation are written below.
ΔH(C2H5OH) = -276 kJ/mol
ΔH(O2) = 0 (because O2 is a pure substance)
ΔH(CO2) = -393.5 kJ/mol
ΔH(H2O) = -285.5 kJ/mol

Using the equation above,
ΔHrxn = (2)(-393.5 kJ/mol) + (3)(-285.5 kJ/mol) - (-276 kJ/mol)
ΔHrxn = -1367.5 kJ/mol

<em>Answer: -1367.5 kJ/mol</em>
6 0
3 years ago
Read 2 more answers
Given the chemical reaction Fe3O4 + H2 ⟶ Fe + H2O, identify the coefficient of H2O in the balanced equation.
Nesterboy [21]

Answer:

fe3o4+4h2 - 3fe + 4h2o

therefore coefficient is 4

6 0
3 years ago
What factors affect the rate of a chemical reaction?
Contact [7]

Answer:

The answer to your question is below

Explanation:

Factors that affect the rate of a chemical reaction

- Temperature        If the temperature increases the rate of reaction increases.

- Concentration     The reaction will move where there less concentration it could be to the reactants of products.

- Particle size         The lower the particle size the higher the rate of reaction.

- Catalyst                 Catalyzers accelerate the rate of reaction

- Pressure                The reaction will move where there are fewer molecules.

3 0
3 years ago
What information can be obtained from a chemical formula?
Nookie1986 [14]
The chemical properties, chemical reactivity
3 0
3 years ago
Pls help! its 20pts!<br> brainliest, rattings, thanks, etc...
Misha Larkins [42]

Question 4: The first one

Question 5: The fourth one

Question 6: The first one

Question 7: The third one

5 0
3 years ago
Read 2 more answers
Other questions:
  • How many dots would a lewis dot structure for neon have?
    6·1 answer
  • The pka of the α-carboxyl group of glutamine is 2.17, and the pka of its α-amino group is 9.13. calculate the average net charge
    13·2 answers
  • Which of the following is an example of a chemical change?
    8·1 answer
  • Determine the a) energy (in eV) and b) wavelength (in cm) corresponding to blue light of frequency 670 THz
    13·1 answer
  • Under which conditions of temperature and pressure would a 1-liter sample of a real gas behave most like an ideal gas?
    7·2 answers
  • Fill in the coefficients that will balance the following reaction:
    11·1 answer
  • At what temperature will 2.50 moles of ideal
    7·1 answer
  • An area has experienced weathering and erosion for many years. Over time, some rock formations have been left behind forming pea
    12·1 answer
  • Michelle learns in science class that simple machines such as an inclined plane can change the amount of force needed to lift he
    8·1 answer
  • Which of the following is a pure substance?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!