Choose all answers that applyPLZ HELP ASAP i am doing a test and i need help. I WILL BE DOING BRAINLIEST TO THE FIRST PERSON WHO REPLYS
When dynamite explodes, it releases a large amount of light and heat. This is an example of _____.
slow combustion
rapid combustion
an exothermic reaction
an endothermic reaction
a chemical change
a physical change
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Answer
Rapid Combustion
Explanation:
An explosion is a combustion and a quick reaction, That makes it rapid
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Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acidic, basic, or neutral? Show your work
Consider the following for the reaction at 300 K:3 ClO– (aq) ClO3– (aq) + 2 Cl– (aq)ExperimentInitial [ClO–] (M)Initial Rate of Formation of ClO3– (aq)(M/min)10.4521.048 × 10–420.9034.183 × 10–4(7) (4 pts) What is the order of the reaction with respect to ClO– (aq)?A) 0B) 1C) 2(8) (4 pts) For experiment #2, what is the initial rate of consumption of ClO–
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Answer:
O-16 isotope is most likely to have the greatest abundance in nature.
Explanation:
Atomic mass of an isotopes of oxygen elements:
- O-16: 15.995 amu
- O-17: 16.999 amu
- O-18: 17.999 amu
Average atomic mass of an oxygen atom = 15.994 amu
Isotope with the value of atomic mass closest to the average atomic mass of the oxygen atom will have the greatest abundance in nature. As it will be found in much more greater extent in nature.
Where as isotope which is least close to the average atomic mass will have less abundance in nature.
O-16 isotope is most likely to have the greatest abundance in nature.
15.995 amu ≈ 15.994 amu
- 20 points
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By reducing food sources, harming habitats, and resulting in calcium-related problems with eggs, acid precipitation in forests has the potential to reduce the rate of bird reproduction.
Yes, acid precipitation in forests has the potential to reduce bird reproduction rates by destroying their habitats, decreasing food sources, and directly damaging eggs and chicks through calcium depletion and disturbance of aquatic feeding systems.
Acid rain can cause soil and water to become more acidic, which reduces the amount of insects and aquatic life that birds rely on for food. Additionally, the thinner eggshells brought on by calcium leaching from the soil as a result of increased acidity can reduce the success of hatching.
There is evidence to show that acid precipitation can have detrimental effects on bird reproduction in impacted locations, albeit the magnitude of the impact varies depending on the specific bird species, ecological circumstances, and the severity of the acid rain.
Want to know more about acid:
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Answer : The initial temperature of gas would be, 269.7 K
Explanation :
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
where,
= initial pressure of gas = 0.723 atm
= final pressure of gas = 0.612 atm
= initial volume of gas = 13.5 L
= final volume of gas = 17.8 L
= initial temperature of gas = ?
= final temperature of gas =
Now put all the given values in the above equation, we get:
Thus, the initial temperature of gas would be, 269.7 K
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hope that this helps you =)
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Answer:
The correct answer is option C.
Explanation:
The radioisotopes in the Earth's interior are not in pure form and exhibit various entrenched impurities and are interspersed. Thus, when a neutron is discharged by a decaying atom, its occurrences of hitting another atom of radioisotope in order to continue the chain reaction becomes lower in comparison to the man-made nuclear reactor. In this manner, the radioactive chain reaction in the interior of the Earth is not well-sustained.
Answer: C
Explanation:
Atoms that undergo fission aren’t concentrated enough to sustain a chain reaction.