The best explanation would be A. The reason the balloon is inflated is because its filled with gas, and the gas particles collide with the interior of the balloon to give it its shape.
Answer: option B - 2 K + MgBr2 = 2 KBr + Mg
Explanation:
2K + MgBr2 --> 2 KBr + Mg
On Left side: 2moles of Potassium (K) reacts with 1 mole of MgBr2
On Right side: 2 moles of KBr and 1 mole of Mg.
You will observe that the coefficient of each element on left side and Right side is balanced in option B, unlike other options.
So, option B is the answer.
The correct answer is A. The statement is true. Boiling happens when the pressure in a liquid sample is equal to the pressure of its surroundings or the atmospheric pressure. For this problem, we are given the pressure of the system as 745 mmHg which is clearly not equal to the atmospheric pressure of 761 mmHg therefore boiling cannot happen.
Answer:
6.2 × 10^-2
Explanation:
Given the reaction:
------------2N2O(g) N2H4(g) <---> 3N2(g) 2H2O(g)
Initial: N2O = 0.1, N2H4 = 0.25-- 0 - - - - - 0
Then: N20 = -2x, N2H4= - x - - - +3x, +2x
Equ : 0.1 - 2x ; 0.25 - x ; +3x ; +2x
At equilibrium :
Add both:
N2O = 0.1 - 2x ;
N2H4 = 0.25 - x;
3N2 = 3x
2H2O = 2x
Moles of N2O at equilibrium = 0.059
Then;
0.1 - 2x = 0.059
-2x = 0.059 - 0.1
-2x = - 0.041
x = 0.041 / 2
x = 0.0205
Moles of N2 present at equilibrium ;
3N2 = 3x
3N2 = 3(0.0205)
= 0.0615
= 0.062 = 6.2 × 10^-2
Answer:
Oxidize NADH to NAD+
Explanation:
Fermentation is of two types alcoholic fermentation and lactic acid fermentation both occurs without oxygen. In alcoholic fermentation, glucose is first converted into two pyruvic acid molecule and pyruvic acid is then converted into lactic acid by oxidizing NADH to NAD+.
In lactic acid fermentation glucose is first break into 2 pyruvic and than this pyruvic acid is converted into lactic acid by oxidizing 2 NADH molecules into NAD+. Therefore the correct answer is to oxidize NADH to NAD+.