Answer: Protons
WHY?
Changing electrons will only result in the same element having different charges and hence, changing it's chemical properties.
Changing neutrons will not change an element but it will result in an isotope forming instead. (Isotopes are elements of the same type with different neutron numbers.)
However, changing the proton number would immediately change the nucleus composition, resulting in a change in element with a negative charge as there are more electrons than protons. This results in a expansion in valance electrons's distance from the nucleus. This results in a change in chemical properties of the element.
Therefore, a change in Protons is the answer.
Answer: 0.50 mole K2O
Explanation: To convert the mass of K2O to moles we will need to find the molar mass of K2O.
47.2 g K2O x 1 mole K2O / 94 g K2O
= 0.50 mole K2O
The higher the order, the lower the entropy. Solids are most orderly and gases are least orderly, with liquids and aqueous in between. That said, NaCl(g) would have the highest entropy.
Answer:
⁵⁸Fe
Explanation:
mass number of the isotope = number of protons + number of neutrons
mass number of the isotope = 26 + 32 = 58 a.m.u
a.m.u - atomic mass units
Knowing that the element have 26 protons and 26 electrons it have to be an isotope of iron.
⁵⁸Fe
Answer:
B. The coefficients give the molar ration of the reactants
Explanation: