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notka56 [123]
4 years ago
9

Because ________ change the identity of the substances involved, they are hard to reverse

Chemistry
1 answer:
sveta [45]4 years ago
4 0
Chemical is the answer to the question, but nuclear could also be a valid one since it is nearly impossible to reverse that.
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When 167.2 joules of heat is added to 4.00 grams of water at 10c the resulting temperature is what
Katena32 [7]
Q=mc \Delta T \\\\
Q=168,2J\\
m=4g\\
c=4.184\frac{J}{g^{o}C}\\\\
\Delta T=\frac{Q}{mc}=\frac{167,2J}{4g*4,184\frac{J}{g^{o}C}}=9,99^{o}C\\\\
\Delta T = T_{f}-T_{i}\\\\
9,99^{o}C=T_{f}-10^{o}C\\\\
T_{f}=9,99^{o}C+10^{o}C=19,99^{o}C\approx20^{o}C
5 0
3 years ago
2 or 1 fun facts about preventing hazardous waste
Sedbober [7]

Answer:

Not really fun facts about hazardous waste

Explanation:

four characteristics of hazardous waste are: ignitability • corrosivity • reactivity • toxicity. These things should be thrown away a proper way to reduce pollution.

6 0
3 years ago
There are many lewis structures you could draw for sulfuric acid, h2so4 (each h is bonded to an o). part a what lewis structure(
erica [24]
Structure 1 is satisfying octet rule because each atom surrounded by 8 electrons:
The valance electron for oxygen is 6, for sulfur is 6, but for hydrogen is 1. Therefore, the molecule has <span>valance electrons. Sulfur is bonded with 4 oxygen atoms,  4 single bonds, whereas 2 hydrogen atoms are bonded with 2 oxygen atoms. 

But the actual structure is 2 but it violates octet rule since S is surrounded in this case with 12 electrons
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7 0
3 years ago
Read 2 more answers
Ricardo compra un gaseosa en el súper al destaparla la gaseosa comienza a salir espuma y vuelca la mitad al piso ¿Por qué puede
dimaraw [331]

Answer:

Las bebidas gaseosas como las gaseosas están hechas de un soluto de dióxido de carbono gaseoso en un líquido. La solubilidad del dióxido de carbono en el líquido depende de la presión y la temperatura de la lata de refresco, y también de agitar la lata de refresco que introduce burbujas que permanecen ocultas hasta que se abre la lata antes de que burbujee.

Por lo tanto, dado que la presión en la lata de refresco permanece constante, elevar la temperatura, agitar la lata de refresco o congelar el refresco, lo que aumenta la cantidad de dióxido de carbono en la porción líquida, hará que el refresco forme espuma y se derrame.

Explanation:

8 0
3 years ago
Help me i don’t know what to put here pls thank you!
taurus [48]
I’m pretty sure that the answer is life, they all have life
4 0
3 years ago
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