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
babunello [35]
2 years ago
10

What evidence is there of energy release after chemical reaction

Chemistry
1 answer:
viktelen [127]2 years ago
3 0

Answer:

loss of mass

Explanation:

your welcome :)

You might be interested in
Write a full chemical equation for the reactions between magnesium and sulfuric acid
melamori03 [73]

Answer:

magnesium + hydrochloric acid → hydrogen gas + magnesium chloride

explanation:

the nitrogen in HNO3 is in the +5 oxidation state and is easily reduced. The reduction would result in the oxidation of the hydrogen gas, forming the water once again.The sulfur in H2SO4 is also in its highest oxidation state, +6.

<em>Hope</em><em> this</em><em> helps</em><em> </em><em>:</em><em>)</em>

6 0
3 years ago
What is melted rock and minerals found below earths crust
nordsb [41]
Melted rock and minerals below the earth's crust is also known as magma
6 0
3 years ago
This <br> Question please
Marizza181 [45]

Answer:

See detailed explanation.

Explanation:

Hello!

i. In this case, since the given chemical reaction is exothermic due to the negative change in the enthalpy of reaction, we infer that according to the mentioned principle, by lowering the temperature the reaction will shift rightwards and therefore the yield is increased; thus, you need a lower temperature than the specified.

ii. In this case, since the reaction has less moles at the products side, according to the mentioned principle it'd be necessary to rise the pressure in order to increase the yield, since the increase of pressure favors the reaction side with the fewest number of moles.

Best regards!

4 0
2 years ago
If 8.00 g NH4NO3 is dissolved in 1000 g of water, the water decreases in temperature from 21.00 degrees Celsius to 20.39 degrees
telo118 [61]

Answer:

25.7 kJ/mol

Explanation:

There are two heats involved.

heat of solution of NH₄NO₃ + heat from water = 0

q₁  +  q₂  =  0

n  =  moles of NH₄NO₃  =  8.00 g NH₄NO₃  ×  1 mol NH₄NO₃/80.0 g NH₄NO₃          

∴ n =   0.100 mol NH₄NO₃

q₁ = n * ΔHsoln = 0.100 mol * ΔHsoln

m  =  mass of solution  =  1000.0 g + 8.00 g  =  1008.0 g

q₂  =  mcΔT  = 58.0 g  ×  4.184 J°C⁻¹  g⁻¹  × ((20.39-21)°C) = -2570.19 J

q₁  +  q₂  =  0.100 mol  ×ΔHsoln  – 2570.19 J  =  0

ΔHsoln  =  +2570.19 J  /0.100 mol  =  +25702 J/mol  =  +25.7 kJ/mol

7 0
3 years ago
Which items are directly related to radioactive decay
uranmaximum [27]
E=mc^2 and mass defect
3 0
3 years ago
Other questions:
  • How many molecules are in 9.44 moles of AICI3?
    15·1 answer
  • What is the ph of 0.450 m al(no3)3 [ka for al3+(aq) = 1.00x10-5]? express your answer to two decimal places?
    15·1 answer
  • Which absolute magnitude rating would be the dullest?<br><br> -6<br><br> 0<br><br> +2<br><br> -1
    12·1 answer
  • Why is it safer to live in the middle of a plate instead of near a plate boundary?
    12·1 answer
  • A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that ________.
    8·1 answer
  • WILL GIVE BRAINLIEST
    9·1 answer
  • Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm3.
    14·1 answer
  • 10) In the image below, Melting (D) and Evaporation (E) are shown. What is occurring during these phase changes? *
    15·1 answer
  • 8. Water behind a dam, a moving car, and electricity moving in a circuit all are examples of
    11·1 answer
  • Can someone help me with these?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!