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
dsp73
2 years ago
8

I need help fast...........

Chemistry
1 answer:
guapka [62]2 years ago
8 0

Answer:

I think its might be 1 because the ionic numbers for CA is +2 and for P its +3

You might be interested in
I2(g) + Cl2(g)2ICl(g) Using standard thermodynamic data at 298K, calculate the entropy change for the surroundings when 1.62 mol
galina1969 [7]

Answer:

The change in entropy of the surrounding is -146.11 J/K.

Explanation:

Enthalpy of formation of iodine gas = \Delta H_f_{(I_2)}=62.438 kJ/mol

Enthalpy of formation of chlorine gas = \Delta H_f_{(Cl_2)}=0 kJ/mol

Enthalpy of formation of ICl gas = \Delta H_f_{(ICl)}=17.78 kJ/mol

The equation used to calculate enthalpy change is of a reaction is:  

\Delta H_{rxn}=\sum [n\times \Delta H_f(product)]-\sum [n\times \Delta H_f(reactant)]

For the given chemical reaction:

I_2(g)+Cl_2(g)\rightarrow 2ICl(g),\Delta H_{rxn}=?

The equation for the enthalpy change of the above reaction is:

\Delta H_{rxn}=[(2\times \Delta H_f_{(ICl)})]-[(1\times \Delta H_f_{(I_2)})+(1\times \Delta H_f_{(Cl_2)})]

=[2\times 17.78 kJ/mol]-[1\times 0 kJ/mol+1\times 62.436 kJ/mol]=-26.878 kJ/mol

Enthaply change when 1.62 moles of iodine gas recast:

\Delta H= \Delta H_{rxn}\times 1.62 mol=(-26.878 kJ/mol)\times 1.62 mol=-43.542 kJ

Entropy of the surrounding = \Delta S^o_{surr}=\frac{\Delta H}{T}

=\frac{-43.542 kJ}{298 K}=\frac{-43,542 J}{298 K}=-146.11 J/K

1 kJ = 1000 J

The change in entropy of the surrounding is -146.11 J/K.

4 0
3 years ago
Are particles in gas close together ​
Vesna [10]

Answer:

Solid particles are close together not gas particles

6 0
2 years ago
What is the difference between a balanced equation and an unbalanced equation
Nadya [2.5K]
In balanced equation there are same number of atoms in each element on both sides of the equation. unbalanced equation is when there are different number of atoms in each element on the both sides
6 0
3 years ago
What is the solubility of NH4CL at 50 degrees C?
Simora [160]

i believe its 50 grams.

8 0
2 years ago
What is a decomposition reaction?
77julia77 [94]

Answer:

D. Two reactants combine to form a single ew product.

Explanation:

Because, A decomposition reaction produces multiple products from a single reactant.

4 0
2 years ago
Other questions:
  • Elements in group 17 have similar properties because they all have the name number of what
    12·2 answers
  • Acid-water solutions taste __________. Acids react with __________ to produce salts and water. Acid-base reactions are called __
    11·1 answer
  • How many moles of nitrogen, N, are in 78.0g of nitrous oxide, N2O?
    8·1 answer
  • Which has a greater speed,a heron that travels 600m in 60 seconds or a duck that travels 60m in 5 seconds? explain
    12·1 answer
  • A 500 mL piston has a gas mixture inside at a pressure of 15.0 atm. What volume would the piston have if the pressure increased
    10·1 answer
  • Chemicals that are able to slow or stop the reaction rate are inhibitors. reactants. products. catalysts.
    13·2 answers
  • LOTS OF POINTS (75) I WILL GIVE BRAINLIEST!!!!!
    6·1 answer
  • Pls answer these and show work
    9·1 answer
  • The amount of thermal energy contained by a substance depends on 2 things
    10·1 answer
  • QUESTION 5<br> How can you increase the kinetic energy of the particles in a substance?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!