According to the kinetic molecular theory for an ideal gas, all gas particles "<span>have collisions that decrease the total energy of the system" but this is not always the case. </span>
Answer:
Explanation: possible oxidation numbers of Au are +I and +III
Au2O3 ⇒ 2 Au + 3 O2
3Ca(NO3)2(aq) +Fe2(SO4)3(aq)-----> 3CaSO4(s)+ 2Fe(NO3)3(aq)
3Ca²⁺ + 6 NO3 ⁻ +2 Fe ³⁺ +3SO4²⁻ -----> 3CaSO4(s)+2 Fe ³⁺+ 6 NO3 ⁻
3Ca²⁺+3SO4²⁻---->3CaSO4(s)
Ca²⁺+SO4²⁻---->CaSO4(s)
<u>Answer:</u> The correct answer is it is an example of combustion.
<u>Explanation:</u>
Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide gas and water molecule.
General equation for these reactions are given as:
Redox reaction is a type of reaction in which reduction and oxidation reaction takes place simultaneously. One substance goes oxidation reaction and another goes reduction reaction.
Combustion reactions are also termed as oxidation reactions because oxygen is getting added to both carbon and hydrogen atoms.
Hence, the correct answer is it is an example of combustion.
Answer:
C. radioactive material
Explanation:
This exposure primarily comes from cosmic rays, radioactive material in the earth (such as uranium-238), ingestion of naturally occurring radionuclides in food (such as potassium- 40), and inhalation of radon gas. In the United States, the average background radiation dose is 300 mrem/yr.