The question is incomplete.
The complete question probably is
The pH scale for acidity is defined by pH = − log₁₀[H⁺] where [H⁺] is the concentration of hydrogen ions measured in moles per liter (M). A solution has a pH of 2.55. Find the hydrogen ion concentration.
Answer: -
0.003 M
Explanation: -
pH = − log₁₀[H⁺]
Thus the hydrogen ion concentration [H⁺] =
=
= 0.003 M
Answer:
The reason carbon-13 is more abundant than carbon-14 despite them both being isotopes is because carbon-13 is stable and doesn't decay into other elements, unlike carbon 14.
Explanation:
Carbon isotopes come in three forms. By far the most common isotope of carbon is carbon-12 (12C), which contains six neutrons in addition to its six protons. The next heaviest carbon isotope, carbon-13 (13C), has seven neutrons. Both 12C and 13C are called stable isotopes since they do not decay into other forms or elements over time. The rare carbon-14 (14C) isotope contains eight neutrons in its nucleus. Unlike 12C and 13C, this isotope is unstable, or radioactive. Over time, a 14C atom will decay into a stable product.
The carbon atom in coal becomes carbon dioxide when it is burned. the carbon atom changes from a solid structure to a gas but it’s mass doesn’t change.
Gravity is pulling the skydiver down therefore gravitational force
Answer:
No
Explanation:
A single property is not conclusive for identifying a substance. For example, conductivity. Copper, aluminum, and lead all conduct electricity, yet they have different atomic number, electronegativity, and physical properties, thus their shared property of conducting electricity is not enough to correctly identify each substance.