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
Nady [450]
2 years ago
6

Елементите от IА и IIА групи на Периодичната система

Chemistry
1 answer:
sergiy2304 [10]2 years ago
5 0
Yes yes you are totally right
You might be interested in
25.9cm^3 divided by 6.32 g/cm^3
enyata [817]

Answer:

clock it'll luck is be FL KS Fb it to KS go out to if go off to kg HR to kg to if he do well all

4 0
3 years ago
Read 2 more answers
The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining
Jet001 [13]
The process is know as diffusion in which substances move from higher concentration to lower concentration
5 0
3 years ago
The potential energy diagram for a reaction starts at 380 kJ and ends at 100 kJ. What type of reaction does the diagram best rep
ohaa [14]

Answer: A.  Exothermic reaction

Explanation: Enthalpy change for a reaction is sum of enthalpy of formation of products minus sum of enthalpy of formation of reactants.

When the energy level of reactants is above as compared to the products, the reaction is exothermic and when its opposite then reaction is endothermic.

From given information, the potential energy diagram starts at 380 kJ means the energy level of reactants is 380 kJ. It ends at 100 kJ means the energy of products is 100 kJ.

Enthalpy of reaction = 100 kJ - 380 kJ

Enthalpy of reaction = -280 kJ

Negative sign of enthalpy change indicates an Exothermic reaction.

5 0
3 years ago
Read 2 more answers
If there are many forces acting on an object how can the net force be 0
zysi [14]
You have to balance out those forces and apply the same amount of equal and opposite force to it. I hope I helped ^^
4 0
3 years ago
Calculate the standard entropy of vaporization of ethanol, C2H5OH, at 285.0 K, given that the molar heat capacity at constant pr
MArishka [77]

Answer: The standard entropy of vaporization of ethanol is 0.275 J/K

Explanation:

C_2H_5OH(l)\rightleftharpoons C_2H_5OH(g)

Using Gibbs Helmholtz equation:

\Delta G=\Delta H-T\Delta S

For a phase change, the reaction remains in equilibrium, thus \Delta G=0

\Delta H=T\Delta S

Given: Temperature = 285.0 K

\Delta H=78.3J/mol

Putting the values in the equation:

78.3J=285.0K\times \Delta S

\Delta S=0.275J/K

Thus  the standard entropy of vaporization of ethanol is 0.275 J/K

4 0
3 years ago
Other questions:
  • When hydrogen burns, water vapor is produced. the equation is 2h2(g) + o2(g) → 2h2o(g). if 12 l of oxygen are consumed at stp, w
    13·1 answer
  • 16. A baseball has a mass of 1500 grams and displaces 500 ml. of water. What is<br> it's density?
    13·1 answer
  • When comparing the reaction rates for the SN2 substitution of two alkyl halides, the more hindered substrate will undergo substi
    11·1 answer
  • A community includes
    15·2 answers
  • How does water get treated for cities
    15·2 answers
  • Find the original concentration of a solution diluted from 15.00 mL to 125.0 mL with a final concentration of 0.00383 M
    14·1 answer
  • Which of these is not an ecosystem service that benefits people?
    11·1 answer
  • What weather does spikes or icicles bring?
    8·1 answer
  • A beta particle has
    15·1 answer
  • What is a vapor?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!