Answer:
The correct answer is letter A. Condensation nucleii
Answer:
0.19M
Explanation:
2A → A2
Rate constant = 0.0265 M–1min–1
Initial concentration = 2.00 M
Final Concentration = ?
time, t = 180min
The formular relating the parameters is given as;
1 / [A] = kt + 1 / [A]o
1 / [A] = 0.0265 * 180 + (1 / 2)
1 / [A] = 4.77 + 0.5
[A] = 1 / 5.27 = 0.19M
Answer:
Zero
Explanation:
Standard Heat of Formation (ΔH°f) for any element in it's basic standard state is zero (0) Kj/mole. If you have a college general chemistry text, look in the appendix for table with title 'Thermodynamic Properties of Substances at 25°C'. Scan down under the symbol (ΔH°f) ... Note that the substance listed by the 'zero' Kj/mole values will be an element. This is the element in basic standard state. Oxygen (O₂(g)) will have a 0 Kj/mole value as does H₂(g), N₂(g), F₂(g), Cl₂(g), Br₂(l) and I₂(s). <em>These are the 7 diatomic elements in basic standard state.</em> Look at the pattern that is made for this set of elements on the periodic table. Starting with N > O > F > Cl > Br > I it traces as a '7' => You just have to remember Hydrogen is a member of the set also.
Answer and Explanation:
Photosynthesis reaction involves two reactants, carbon dioxide and water. These two reactants yield two products, namely, oxygen and glucose.
This is most likely because of strong attractive forces between the water molecules and the solute particles.