Asexual reproduction takes/or inherits one parent's genes, because it only involves one organism.
Sexual reproduction requires both a male and female.
3. 6.02 x 10^23 atoms of At
Answer:
Electron gain enthalpy becomes more and more negative from left to right in a period. As we move across a period from left to right the atomic size decreases and the nuclear charge increases
Answer:
ΔGº = --29 kJ
Explanation:
The equation to use is ΔGº = -nFEºcell
where n is the number of mole of electrons exchanged in the redox equation
F is Faraday´s constant 96485 C/mole
Eº cell potential
Ni²⁺(aq) + 2e⁻ ⇒ Ni (s) Eºred = -0.25 V
Cd(s) ⇒ Cd²⁺ + 2e⁻ Eºox = +0.40 V
Eºcell = 0.40 V -0.25 V = 0.15 V
ΔGº = - 2 mole x 96485 C/mol x 0.15 V = -2.9 x 10⁴J = -29 kJ
(remember 1 Coulomb x 1 Volt = 1 Joule)
Answer:
6.56x10⁻³ mol
Explanation:
First we <u>calculate how many HCl moles are there in 50.0 mL of a 0.1800 M solution</u>:
- 0.1800 M * 50.0 mL = 9.00 mmol HCl
Then we need to <u>calculate how many HCl moles were in excess</u>, that number is<em> the same as the number of NaOH moles they reacted with</em>:
- 0.0980 M * 24.90 mL = 2.44 mmol NaOH = 2.44 mmol HCl
Finally we <u>calculate the difference between the original number of HCl moles and the number remaining after the reaction with XnCO₃</u>:
- 9.00 mmol - 2.44 mmol = 6.56 mmol
- 6.56 mmol / 1000 = 6.56x10⁻³ mol
