Answer = B = Neutrons and Mass Number
Isotopes are defined as those atoms which have same atomic number but different atomic masses.
Atomic mass is basically the number of protons and neutrons present in an atom.
Atomic number is the number of protons present in an atom.
So, in isotopes the number of protons are same but the number of neutrons vary due to which atomic masses also vary.
In given three isotopes, all have same number of protons but different number of neutrons.
i.e.
H-1 = 1 P + 0 N = 1 u (Proton)
H-2 = 1 P + 1 N = 2 u (Deuterium)
H-3 = 1 P + 2 N = 3 u (Tritium)
Hence, it is clear that the number after H shows a change in number of neutrons and mass number.
B) 1 Zn+ 2HCl--> 1 ZnCl2+1H2
This is balanced
Answer:
I'm so sorry if this is wrong but I think its B
Answer:
B
Explanation:
As it goes down the slope/rail, it gains more kinetic energy and at this point its at its highest peak, which decreases as it reaches C then increases once again
Answer:
40°C.
Explanation:
A calorie is defined as the amount of energy needed to raise the temperature of 1 gram of water through 1 °C. In the same way, a kcal would be defined as the amount of energy needed to raise the temperature of 1 kilogram of water through 1 °C.
Based on this definition, 100kcal will increase the emperature of the water in:
100kcal / 2,5kg = <em>40°C</em>
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I hope it helps!
