J.R. S.

The cathode and anode reactions in a certain electrochemical reaction are shown below:Cathode: H2O(l) + 2e → H2(g) + 2OH-(aq) Anode: 2Cl-(aq) → Cl2(g) + 2eThe standard cell potential of this... more

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Chemistry

04/24/19

What is the atomic structure of a neuron?

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Chemistry

04/23/19

What are the predominant units used when measuring Vmax in enzyme kinetics?

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Chemistry

04/23/19

Entropy Question

Suppose a heat source generates heat at a rate of 79.0 W (1 W = 1 J/s). How much entropy does this produce per hour in the surroundings at 29.5 °C? Assume the heat transfer is reversible.Change in... more

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Chemistry

04/23/19

What is the resulting volume if given that ten cm3 of a two molars solution of nitric acid is added to ten cm3 of one molar solution of calcium hydroxide?

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Chemistry Chemistry

04/23/19

in what order do electrons fill orbitals?

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Chemistry

04/23/19

Is hydrogen peroxide monobasic or dibasic?

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Chemistry

04/23/19

How come HCl acid in stomach doesn't damage the cells that secrete it?

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Chemistry

04/23/19

If 50.0 ml of .25M HX (Ka = 7.5 x 10^-5) is neutraliuzed with .75M NaOH calculate the pH at the endpoint.

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Chemistry

04/23/19

If Ka HCN=2.9 X 10^-10 and Kb NH3 = 1.8 x 10^-5, calculate the pH of a .600M NH4CN salt solution.

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Chemistry Organic Chemistry

04/23/19

A 0.75M solution of a weak base B, has a pH of 10.50

a) write the Kb equation for Bb) calculate Kb-

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Chemistry

04/23/19

pure oxygen gas

Consider the following reaction:4Al (s) + 3O2 (g)→2Al2O3 (s)It takes 2.00 L of pure oxygen gas at STP to react completely with a certain sample of aluminum. What is the mass of aluminum reacted?

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Chemistry

04/23/19

temperature of ideal gas

What is the temperature of a 0.401 mol sample of an ideal gas at a volume of 11.2 L and pressure of 746 mm Hg?

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Chemistry

04/23/19

volume of gas of N2O4

Consider the following chemical equation.2NO2 →N2O4If 25.0 mL of NO2 gas is completely converted to N2O4 gas under standard conditions, what volume will the N2O4 gas occupy?

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Chemistry

04/23/19

Moles of N2 problem

An 11.2 L sample of gas is determined to contain 0.50 mole of N2. At the same temperature and pressure, how many moles of gas would there be in a 20. L sample?

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Chemistry

04/23/19

volume of the balloon

A balloon is filled to a volume of 7.00×10^2 mL at a temperature of 20.0 Celsius. The balloon is then cooled at constant pressure to a temperature of 1.00×10^2 K. What is the final volume of the... more

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Chemistry

04/23/19

conversion of torr

A student recorded the barometric pressure as 762 torr. On the next day a storm moved into the area and the student observed the barometric pressure to be 751 torr. What is the difference in the... more

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Chemistry

04/23/19