Answer:
I think that the first one is right(A)
Atoms of an element that contain different numbers of neutrons are called isotopes. Each isotope of a given element has thesame atomic number but a different mass number (A), which is the sum of the numbers of protons and neutrons.
Are you looking for the word "enthalpy"? It's defined as the heat content of a system. We can never know the actual enthalpy of a system, only measure changes in it.
Answer:
Less
Explanation:
The hydronium from the HCl is used to neutralize the bicarbonate in the baking soda. The hydronium is the acid and the bicarbonate ion is the base while the sodium and chloride ions are pH-neutral. Since theres a 1:1 mole ratio of hydronium to HCl and bicarbonate to sodium bicarbonate, it would require less HCl to neutralize a less concentration baking soda solution.
Answer:
one cell to regulate
Explanation:
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