Answer:
2.05 i think sorry if im wrong
Explanation:
Answer:
16.79 M
Explanation:
Given data
- Mass of KI (solute): 390.1 g
- Volume of solution: 140.0 mL = 0.1400 L
First, we will calculate the moles of KI, considering its molar mass is 166.00 g/mol.
390.1 g × (1 mol/166.00 g) = 2.350 mol
The molarity of KI is:
M = moles of solute / liters of solution
M = 2.350 mol / 0.1400 L
M = 16.79 M
Answer:
260K
Explanation:
We use the general gas equation to solve this. The mathematical form can be represented as follows:
P1V1/T1 = P2V2/T2
We are to look for T2 from the question, rearranging the equation yields:
T2 = T1P2V2/P1V1
So what information do we have from the question:
T2= ?
P2 = 640mmHg
V2 = 198L
P1 = 760mmHg
T1 = 273K as they gas is at S.T.P since pressure is 760mmHg which is the standard pressure
V1 = 175L
We now substitute all these values:
T2 = (273 * 640 * 198)/(760 * 175)
T2 = 260K
In redox reaction electrons are transferred
Redox reaction involve both reducing of b agent and oxidizing agent. reducing agent acts as electrons donor while oxidizing agent acts as electron acceptor
for example formation of Hydrogen fluoride (HF)
that is H2 + F2 = HF
by breaking the equation
H2 = 2 H^+ 2e-
F2 + 2e= 2f-
hydrogen move from oxidation from zero( 0 )to positive one ( +1 )therefore hydrogen is oxidized. Fluorine move from oxidation state of zero(0) to oxidation state of negative one(-1) therefore fluorine is reduced.
If you put a straw into a glass of water, the straw looks to be bent,
although nothing has physically happened to the straw. The term that
describes this
property of light is called refraction.
So, the answer would be: Refraction
