Answer:
2.67 × 10⁻²
Explanation:
Equation for the reaction is expressed as:
CaCrO₄(s) ⇄ Ca₂⁺(aq) + CrO₂⁻⁴(aq)
Given that:
Kc=7.1×10⁻⁴
Kc= ![[Ca^{2+}][CrO^{2-}_4]](https://tex.z-dn.net/?f=%5BCa%5E%7B2%2B%7D%5D%5BCrO%5E%7B2-%7D_4%5D)
Kc= [x][x]
Kc= [x²]
7.1×10⁻⁴ = [x²]
x = 
x = 0.0267
x = 
75.7 grams.
Convert moles to grams using this:
Moles • grams/1 mole = grams
(Grams is over 1 mole)
Ummmmmmmmmmmmmmmmmmmmmmmmm, 21
Answer:
no
Explanation:
because hypothesis are just what we thing is gonna happen it doesn't have to be true
sorry if im wrong
The main atomic partilces are electrons, protons and neutrons.
Electrons are around the nuclei and have negative charge.
Protons and neutrons are in the nulei of the atoms. Protons are positive and their charge balance the charge of the electrons, so the atom is neutral.
Neutrons have no charge.
So, the answer is:
the charge of electrons is negative, the charge of the protons is positive and the neutrons have no charge.
