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Vlada [557]
3 years ago
9

What is the change in enthalpy for a reaction if the reactants have 270 kJ

Chemistry
1 answer:
Free_Kalibri [48]3 years ago
8 0

Answer:

420 KJ is the answer of your questions

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stiks02 [169]

Answer:

B on both questions

Explanation:

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3 years ago
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Which is the average kinetic energy of the individual particles of a substance?
zhannawk [14.2K]

Answer: Temperature

Explanation: Temperature is a measure of average kinetic energy of particles in an object. The hotter the substance, higher is the average kinetic energy of its constituent particles. When we heat a substance, the particles that constitute the substance gain some energy and begin to move faster.

6 0
3 years ago
What is Ionization Energy?
NARA [144]

Answer:

Ionization energy is a measure of the difficulty involved in  removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.

Explanation:

4 0
3 years ago
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How many milligrams of sodium sulfide are needed to completely react with 25.00 ml of a 0.0100 m aqueous solution of cadmium nit
NARA [144]
Na₂S(aq) + Cd(NO₃)₂(aq) = CdS(s) + 2NaNO₃(aq)

v=25.00 mL
c=0.0100 mmol/mL
M(Na₂S)=78.046 mg/mmol

n(Na₂S)=n{Cd(NO₃)₂}=cv

m(Na₂S)=M(Na₂S)n(Na₂S)=M(Na₂S)cv

m(Na₂S)=78.046*0.0100*25.00≈19.5 mg
5 0
3 years ago
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What would happen to a diver who does no exhale while surfacing from a 30 m dive?
sertanlavr [38]
Their lungs would try to expand to about 4 timed the normal volume which would force air into the various body tissues. this can cause a lung expansion injury and it could case air embolism. Air embolism is when air bubbles get trapped in blood vessels. This can lead to a blockage which will could be fatal.
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3 years ago
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