Answer:
1. Molecular solids are usually excellent conductors of electric current.
Explanation:
Molecular solids are actually insulators (prevent electricity).
Answer:
188 s
Explanation:
We are told the reaction is second order respect to A so we know the expression for the rate law is
rate = - Δ[A]/Δt = k[A]²
where the symbol Δ stands for change, [A] is the concentration of A, and k is the rate constant.
The integrated rate law for this equation from calculus is
1 / [A]t = kt + 1/[A]₀
where [A]t is the concentration of A at time t, k is the rate constant, and [A]₀ is the initial concentration.
Since we have all the information required to solve this equation lets plug our values
1 / 0.280= 0.0130x t + 1 / 0.890
( 1 / 0.280 - 1 / 0.890)M⁻¹ = 0.0130 M⁻¹ ·s⁻¹t
t = 188 s
Answer:
20%
Explanation:
Okay so the phrase apples in trees ( Adenine & Thymine ) and cars in garages (Cytosine & Guanine ) can help in this situation.
Since Thymine is 30%, Adenine will also be 30%. This gives you 60% of the DNA sample.
You have 40% left of the DNA sample so they must be Cytosine and Guanine.
Divide 40% by 2 and you get 20%. So you have 20% Guanine and 20% Cytosine.
Hope it helps!
: )
The product is called carbon monohydroxide (CaOH+) ion. This is the only product if the solution is alkaline. The reactants are calcium (Ca2+) and hydroxide (OH-) ions. If the solution is acidic, hydrogen (H+) ion is also included in the product side of the equation.
Ca2+(aq) + OH-(aq) -> CaOH+(aq)
