Answer:
Knowing that boron has an atomic mass of 10,811 means that all boron isotopes on average weigh 10,811 u.
Explanation:
The atomic mass of an atom is the mass of the atom measured in u (unified atomic mass unit), although we can also express it as Da (Dalton's unit)
Atomic mass refers to the average mass that all isotopes of that element have.
When we speak of isotopes we are referring to the element itself but with a different number of neutrons, which makes it modify its mass number.
Answer:
Zinc oxide is react with sulphuric acid to give zinc sulphate and water.
zinc oxide +sulphuric acid ⇒ zinc sulphate + water
Zno +H2So4 ⇒ZnSo4 + H2O
SULPHURIC ACID = H2SO4
ZINC SULPHATE =ZnO
Explanation:
Answer:
Acids have a pH less than 7. Acids contain lots of hydrogen ions
Alkalis have a pH greater than 7. Alkalis contain lots of hydroxide ions
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I don't know where the question is, but I will assume that this is a True or False statement.
If that is the case, this statement is false.
You have the equation Q = mc<span>ΔT.
The statement states that if m is doubled, c is doubled as well. This is incorrect, since the specific heat value cannot be changed because it is attributed to the specific substance. If m doubles with the same substance, assuming a constant change in temperature, the only thing that can change is Q, which is the heat energy gained or lost from the substance.</span>