All categories

3 years ago

Which of the following is an example of chemical energy changing into radiant energy

1 answer:

8 0

Lightning is another example of electrical Chemical Energy is energy stored in the bonds of atoms and molecules. It is the energy that holds these particles together. Biomass, petroleum, natural gas, and propane are examples of stored chemical energy.

You might be interested in

how do i caculate the trmperature change that 725 grams of aluminum will undergo when 2.35x10^4 Joules of thermal energy are add

sesenic [268]

Answer:

36°C

Explanation:

Given parameters:

Mass of aluminum = 725g

Quantity of heat = 2.35 x 10⁴J

Unknown:

Temperature change = ?

Solution:

To solve this problem, we simply use the expression below:

The quantity of energy is given as:

Q = m C Δt

Q is the quantity of energy

m is the mass

C is the specific heat capacity of aluminum = 0.9J/g°C

Δt is the change in temperature

The unknown is Δt;

Δt = $\frac{Q}{mc}$ = $\frac{2.35 x 10^{4} }{725 x 0.9}$ = 36°C

4 0

3 years ago

Balancing Equations Worksheet

kakasveta [241]

Answer:

1. N2+3H2=2NH3

2. CH4+2O2—>CO2+2H2O

3. P4+3O2—>2P2O3

4. 2H2+2NO—> N2+2H2O

5. 2Na+Cl2—>2NaCl

6. TiCl4+4Na—>4NaCl+Ti

7. S8+12O2—>8SO3

8. 2KClO3 —> 3O2 +2KCl

9. Na3PO4 + Fe(NO3)3 —> FePO4 + 3NaNO3

10. 3Ca(OH)2 + 2H3PO4 —> Ca3(PO4)2 + 6H2O

11. HNO3 + NaHCO3 —> NaNO3 + H2O + CO2 (The equation is balanced)

12. 2H2O2 —>2H2O + O2

13. C3H8 + 5O2 —> 3CO2 + 4H2O

14. 6H2O + 6CO2 —> 6O2 + C6H12O6

15. 2AgNO3 + Cu —> Cu(NO3)2 + 2Ag

16. CBr4 + 2Cl2 —> CCl4 + 2Br2

17. Cu + 2H2SO4 —> CuSO4 + 2H2O +SO2

18. 3Na2S + 2Fe(NO3)3 —> Fe2S3 + 6NaNO3

19. Pb(OH)2 + 2HCl —> 2H2O + PbCl2

20. 2AlBr3 + 3K2SO4 —> 6KBr + Al2(SO4)3

21. 2Na3PO4 + 3CaCl2 —> 6NaCl + Ca3(PO4)2

22. 2Al + 6HCl —> 3H2 + 2AlCl3

23. 2NH3 + H2SO4 —> (NH4)2SO4

24. 2C8H18 + 25O2 —> 16CO2 + 18H2O

25. CaCO3 + 2HCl —> H2O + CO2 + CaCl2

26. Na2O + H2O —> 2NaOH

27. 2NaHCO3 —> H2O + CO2 + Na2CO3

28. P4 + 3O2 —> 2P2O3

29. Fe(NO3)3 + 3NaOH —> Fe(OH)3 + 3NaNO3

30. 2Na + 2H2O —> H2 + 2NaOH

31. Na2SO3 + 2HCl —> H2O + SO2 + 2NaCl

32. 2Zn + 2Cu(NO3)2 —> Cu2 + 2Zn(NO3)2

33. 2C2H2 + 5O2 —> 4CO2 + 2H2O

34. H2SO4 + 2KNO2 —> 2HNO2 + K2SO4

35. Cu + 4HNO3 —> Cu(NO3)2 + 2NO2 + 2H2O

36. 3I2 + 6NaOH —> 5NaI + NaIO3 + 3H2O

I hope I helped you ^_^

7 0

3 years ago

Which statement about solids is correct?

TiliK225 [7]

Answer:

Explanation:

it is not A because the particles are compressed

it is not C because only liquids and gases can take shape of a container

and its not D because all particles move in a random motion but stay toghether if they are a solid

7 0

2 years ago

Read 2 more answers

Household hazardous waste can be eliminated by preparing your own cleaning products using the following ingredients EXCEPT: vine

vlabodo [156]

I think the correct answer from the choices listed above is the last option. Household hazardous waste can be eliminated by preparing your own cleaning products using the following ingredients except Windex.

It is a chemical product that is hazardous.

Explanation:

Windex may be a glass and hard-surface cleaner. Windex was unreal by the Drackett Company in 1933 and has been marketed throughout.Windex cannot be used.

6 0

3 years ago

Read 2 more answers

The gasification of coal is a method of producing methane by the following reaction. C(s) + 2H2(g) → CH4(g) ∆H=?

Lera25 [3.4K]

Using Hess' Law, we can calculate the heat of reaction of the gasification of coal. Multiplying the second reaction by 2 and reversing the third reaction:

<span>C(s) + O2(g) → CO2(g) ∆H=-394 kj
2H2(s) + O2(g) → H2O(l) ∆H=-572kj
</span>CO2(g) + 2H2O(l) → CH4(g) + 2O2(g) ∆H=891kj

Adding the three reaction would result to
<span>C(s) + 2H2(g) → CH4(g) ∆H = -394 + -572 + 891 = -75 kJ

The answer is
</span><span>(B) -75 kJ
</span>

5 0

3 years ago

Read 2 more answers