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This might be a silly question, but hopefully I will be responded.
As far as I know, ions can't exist on their own, and have to bond with another ion, but it seems that they don't have to when it comes to action potential. It's always about a single ion (e.g. sodium ion entering and leaving cell on its own, not bonding to any other ion). How is this possible if an ion can't exist on its own? Am I wrong about this, or this is some kind of exception, or maybe something else?
Considering the reaction 2H2(g) +2H2 O(g). Calculate the volume of unused oxygen gas when 40cm³ of hydrogen gas is sparked with 30cm³ of oxygen gas
(b) calculate carbonate of mass 1.0g was heated until there was no further change.
(c). Write an equation for the reaction which took place
(d) calculate the mass of the residue
(e). Calculate the volume of the gas evolved at STP.
(f). What will be the volume of the gas measured at 15°c and 760mm Hg?(C=12.0, O=16, Ca=40.0, Molar mass volume of a gas at STP= 022.4dm³)
What is the temperature (°C) for 1.26 mol of Cl2 gas at 0.667 bar if the volume is 45.0 L? a. 3.50 × 10-3 °C
b. 13.2 °C
c. 25.0 °C
d. 286 °C
e. 2.17 × 105 °C
Two applications of the physical chemistry principals to solve problems in food science
List two applications of a physical chemistry principal to food science
How many moles of ammonium ions are in 0.723 g of ammonium carbonate?
If a bomb calorimeter is loaded with 0.0125 moles of napthalene and the ΔT during the combustion process is 4.25 K, what is the ΔHcomb (in kJ/mol) assuming the calorimeter constant (Csystem) is 10.310 kJ/K?
How would you carry out the following reactions? More than one
step may be required.
• benzene → m-bromoacetophenone
• 1-methylcyclohexene → 2-methylcyclohexanone
How would you use a Grignard reaction on an aldehyde or ketone to
synthesize the following compounds?
• 2-pentanol
• 1-phenylcyclohexanol
How many moles of a KOH solution are there in 375mL of 2.45M KOH, and how many grams of KOH do you have
