1) <span>Chemical reactions are always spontaneous when CHANGE IN H is negative and CHANGE IN S is negative</span>False
2)The driving force of a reaction is the change in kinetic energy.
True
3) In the reaction so2cl2 double arrows s02+cl2 heat is evolved. What happens when chlorine (Cl2) is added to the equilibrium mixture at constant volume?
b. The temperature of the system decreases.
4) In a reversible reaction, two substances are in equilibrium if the concentration of each increases by the same amount but the equilibrium constant remains unaffected.
True
5) A numerical value of the ratio of products to reactants, only at a specified temperature is called a(n)
b. equilibrium constant
6)At equilibrium,
a. all reactions have ceased.
Answer:
Low density
Explanation:
The answer to this question is low density as Gases in general have low densities as their particles are very far apart. Their inter-molecular spaces are actually large. And The number of molecules per unit volume in a gas are small when we put them in comparisons with solids and liquids. That is why they have low densities.
I hope this answers your question.
For the first question, i think the correct answer is the third option. When a gas is formed, it is <span>the most conclusive in determining whether a chemical reaction has taken place given that none of your reactants is a gas.
For the second question, the statement is true.
For the third question, the correct answer is the last option.</span>
Hey there!:
a )
number of moles of solute :
moles of solute = molarity x volume ( L )
moles of solute = 1.556 x 200.0
moles of solute = 311.2 moles of KBr
____________________________________________
b) Molar mass of KBr : 119.002 g/mol
1 mole KBr ----------------- 119.002 g
311.2 moles ---------------------- ( mass KBr ) ?
mass glucose = 311.2 x 119.002 / 1
mass glucose => 37033.4224 g
