Problem- a digital watch battery draws 015 milliamperes of, Ask an Expert

Academics

Problem- A digital watch battery draws 0.15 milliamperes of current, which is provided by a mercury battery whose net reaction is:
HgO(s) + Zn(s) ? ZnO(s) + Hg(l)

If a partially used battery contains 1.80 g of each of these four substances, for how many hours will the watch continue to run?
(Determine the limiting reagent in terms of moles. Then multiply by the stoichiometric ratio to determine the number of moles of electrons produced. Then convert moles of electons into Coulombs (Amps*seconds). Then you just need to divide by amps used to find the total number of seconds, and convert to hours.)

Here is the problem which I am struggling on, please help me

View complete question

Chemistry, Academics

Category:- Chemistry
Reference No.:- M91236693

Have any Question?Write your Review or question?

Related Questions in Chemistry

Magnesium metal0100 mol and a volume of aqueous

Magnesium metal(0.100 mol) and a volume of aqueous hydrochloric acid that contains0.500 mol of HCl are combined and react to completion. How manyliters of hydrogen gas, measured at STP, are produced? Mg(s) + 2HCl(aq) --- ...

1 a beaker contains a clear colorless liquidnbspit has

1. A beaker contains a clear, colorless liquid. It has three chemical substances in it, two are liquid and one of them is a solid. How could you determine if it has water, ethanol, and table salt? Remember you're not all ...

Suppose 17 g of zinc is treated with 62 g of pure hydrogen

Suppose 1.7 g of zinc is treated with 6.2 g of pure hydrogen chloride. What is the maximum mass (in g) of hydrogen gas that can be produced?

A 43 kg person drinks 430 g of milk which has a caloric

A 43 kg person drinks 430 g of milk, which has a "caloric" value ofapproximately 3.0 kJ/g. If only 15% ofthe energy in milk is converted to mechanical work, how high (inmeters) can the person climb based on this energy i ...

Describe how to assign anbspoxidation number from

Describe how to assign a Oxidation number from the text: The oxidation number of an atom in an elemental substance is zero. The oxidation number of a monatomic ion is equal to the ion's charge. Oxidation numbers for comm ...

Assignment application planned change in a department or

Assignment: Application: Planned Change in a Department or Unit Health care organizations are continuously immersed in change from the emergence of new policies, to promote quality care and improve patient safety to keep ...

Wat is the molarity to the hundredths place of 50 g hpo3

What is the molarity, to the hundredths place, of 5.0 g HPO3 in 300. mL of solution?

The molecular weight of an unknown gas was measured by an

The molecular weight of an unknown gas was measured by an effusion experiment. It was found that it took 64 seconds for the gas to effuse, whereas nitrogen required 48 seconds. The molecular mass of the gas is ?

What is an example of a cell diagram for a voltaic cell how

What is an example of a cell diagram for a voltaic cell? How do I calculate the standard cell potential for the example of the voltaic cell?

2 h2sg 3 o2g rarr 2 h2og 2 so2gusing standard enthalpies

2 H2S(g) + 3 O2(g) → 2 H2O(g) + 2 SO2(g) Using standard enthalpies of formation, calculate the standard enthalpy change for this reaction.

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Chemistry Expert