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
Phoenix [80]
3 years ago
12

When this candle is burned it seems to disappear over a period of time. In actuality, the candle is being converted to smoke,ash

, and carbon dioxide, and the energy is being released as heat and light. This is an example of _____________.
A. Murphy's law


B. the law of conservation of mass


C. the law of chemical reactions


D. the law of nature
Chemistry
1 answer:
Hitman42 [59]3 years ago
6 0
C.the law of chemical reactions
You might be interested in
HELPPPPP ASAPPP PLZZZZ
makkiz [27]

Answer:

9

Explanation:

i think i dont know

maybe someone tell me if I'm wrong

6 0
3 years ago
Read 2 more answers
NEED HELP ASAP
joja [24]

A.Shield Volcano -----



3 0
4 years ago
Calculate ΔH∘f for CaC2(s): <br><br> CaC2(s)+2H2O(l)→Ca(OH)2(s)+C2H2(g)<br><br> ΔH∘=−127.2kJ
puteri [66]
Below are I think the data for this problem:

Given the following data: 

<span>Ca (s) + 2 C (graphite) → CaC2 (s) ∆H = -62.8 kJ </span>
<span>Ca (s) + ½ O¬2 (g) → CaO (s) ∆H = -635.5 kJ </span>
<span>CaO (s) + H2O (l) → Ca(OH)2 (aq) ∆H = -653.1 kJ </span>
<span>C2H2 (g) + 5/2 O¬2 (g) → 2 CO2 (g) + H2O (l) ∆H = -1300 kJ </span>
<span>C (graphite) + O¬2 (g) → CO2 (g) ∆H = -393.51 kJ 
</span>
Below is the answer:

CaC2 (s) + 2 H2O (l) → Ca(OH)2 (aq) + C2H2 (g) 
<span>So what you do is: </span>
<span>Times the first equation by -1 Second by 1 Third By 1 Fourth by -1 and Fifth by 2 </span>
<span>So This gives us: </span>
<span>1.CaC2--> Ca+2C </span>
<span>2.Ca+1/2O2-->CaO </span>
<span>3.CaO+H2O-->Ca(OH)2 </span>
<span>4.2CO2+H2O-->C2H2+5/2O2 </span>
<span>5.2C+202-->2CO2 </span>
<span>Now you cancel out like terms on either sides of the equation and you end up with </span>
<span>CaC2 (s) + 2 H2O (l) → Ca(OH)2 (aq) + C2H2 (g) Just what you wanted </span>
<span>So to calculate ∆H: </span>
<span>62.8-635.5-653.1+1300-787.02= -712.82</span>
7 0
4 years ago
El ejemplo más claro para definir una cadena de electricidad es una red de pesca, si fuera posible identificar una sola partícul
Lynna [10]

Answer:

<em>Leptón</em>

<em></em>

Explanation:

Lepton son partículas elementales de espín de medio entero (espín 1⁄2), y se sabe que no experimentan interacciones fuertes. Los leptones se clasifican en leptones cargados (los leptones similares a los electrones) y leptones neutros (conocidos como neutrinos). Un electrón es un leptón. Los leptones cargados pueden combinarse con otras partículas para formar átomos compuestos de partículas y positronio, mientras que los neutrinos rara vez interactúan con algo, lo que los hace raros de observar.

<em>Dado que la electricidad es el resultado del movimiento o flujo de electrones, la única partícula representativa de esta fuerza es el leptón.</em>

7 0
3 years ago
5. Which of the following is a synthesis reaction? (2 points)
gulaghasi [49]
2H2 + O2 = 2H2O since two elements created a compound, in this case water.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the Molarity of 0.60 moles of solute in 0.40 L of solution?
    6·1 answer
  • Describe how the act of sweating leads to thirst
    11·2 answers
  • Which of the following weathering processes involves the constant freezing and thawing of water?
    9·1 answer
  • The rapid decomposition of sodium azide, NaN3, to its elements is one of the reactions used to inflate airbags: 2 NaN3 (s)  2 N
    10·1 answer
  • One benefit of nuclear fission reactions is
    6·1 answer
  • Determine the molarity of 3.72 moles of NaBr in 575 ml of solution​
    11·1 answer
  • A 6.22-kg piece of copper metal is heated from 20.5 °C to 324.3 °C. The specific heat of Cu is 0.385 Jg-1°C-1.a.Calculate the he
    5·1 answer
  • The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide
    7·2 answers
  • Exercise while in space is important because it PREVENTS what?
    13·1 answer
  • 2.3 x 10²¹ particles H = __________ mol H (round to the nearest thousandth)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!