01/05/23

15.00 g aluminum sulfide and 10.00 g water react until the limiting reagent is used up. How much of the excess reactant is left over? Al2S3 + 6 H2O → 2Al(OH)3 + 3 H2S
15.00 g aluminum sulfide and 10.00 g water react until the limiting reagent is used up. How much of the excess reactant is left over?Al2S3 + 6 H2O → 2Al(OH)3 + 3 H2S
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01/04/23

Dissolving 4g impure NaOH in water and complete the volume to 200 ml. If 10 of this solution neutralizes with 15 ml of 0.2 M Hcl.Calculate the percentage of the NaOH in the sample
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01/04/23

Empirical formula of a hydrate
If you did not know the formula for the anhydrous compound but did know the identity of the elements that made up the anhydrous compound, would it be possible to calculate the empirical formula for... more
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01/02/23

I'm not sure how to find the pH for the following solutions.

Determine if each of the following results in the formation of a buffer solution. Justify your answer. Calculate the pH of the buffer solutions. A solution containing 0.100 M acetic acid and 0.150... more
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01/01/23

what is limiting reaction of 2mol of AgNO3 and 2 mole of BaCI2 ?
what is the limiting reaction if 2mol of AgNO3 and 2 mole of BaCI2 is taken for reaction
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12/29/22

How many capsules should be given to a patient who is prescribed the following medication? iii caps ud q12h x 7d
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12/28/22

given the chemical equation, 2C2H6(s)+7O2(g)-->4CO2(g)+6H2O(g), determine the volume in liters of CO2 produced from 52.53 L of O2 at STP
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12/28/22

Amount if water in specific heat
How many liters of water can you heat from 25 deg to 100 deg celsius using 250 gram of Methane and 250 gram of Octane Separately?
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12/28/22

mass of aluminum in the sample
A mixture of aluminum and zinc, with a mass of 1.67 g, was dissolved in hydrochloric acid, and produced 1.69 liters of hydrogen gas, under standard conditions. Calculate the mass of aluminum in the... more
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12/22/22

Lock and key theory of acetylcholine

According to lock and key theory single molecule will fit into single receptor only. How does Acetylcholine will binds to both Nicotinic (ligand gated receptor) and muscarinic receptor (g protein... more
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12/20/22

The following reaction occurs at 298 K: Zn(s) + 2Ag+(aq)  Zn2+(aq) + 2Ag(s)
Topic: REDOX AND ELECTROCHEMISTRYQuestion:Sketch a diagram that shows how this cell could be set up. A voltmeter and two beakers, with some labels, are provided to give you a start. Add and label... more
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12/15/22

A balloon filled with helium gas has a volume of 39 mL at a pressure of 101.3 kPa. The balloon is released and reaches an altitude where the pressure is 50.4 kPa.
A balloon filled with helium gas has a volume of 39 mL at a pressure of 101.3 kPa. The balloon is released and reaches an altitude where the pressure is 50.4 kPa. If the temperature has remained... more
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12/15/22

A sample of argon gas has a pressure of 1.35 atm at 22.5 °C. Assuming no change in volume, what temperature will the argon reach at a pressure of 3.21 atm?
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12/13/22

How many grams of sulfur would be in a 105g sample of Na2SO4?
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12/12/22

Finding Molarity of unknown solution
You are given a solution of 0.670M NaOH and asked to find the molarity of an unknown HBr solution. 80.0 mL of NaOH was used to reach the endpoint when 25.5 mL of HBr was titrated. What is the... more
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12/11/22

Calculate either [H3O+] or [OH−] for each of the solutions.
Solution A: [OH−]=1.51×10−7 M; [H3O+]=Solution B: [H3O+]=9.55×10−9 M; [OH−]=Solution C: [H3O+]=7.07×10−4 M; [OH−]=Which of these solutions are basic at 25 °C?Solution A: [OH−]=1.51×10−7 MSolution... more
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12/11/22

A chemist combined chloroform (CHCl3) and acetone (C3H6O) to create a solution where the mole fraction of chloroform
A chemist combined chloroform (CHCl3) and acetone (C3H6O) to create a solution where the mole fraction of chloroform, 𝜒chloroform, is 0.171 . The densities of chloroform and acetone are ... more
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12/10/22

In a sample of FeBr2 that weighs 5832 grams what is the weight of bromine?
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12/10/22

C3H8 + 5 O2= 4H2O +CO2
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12/10/22

How is it that we can lose so many neurons without massive memory effects?
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12/10/22

A sample of 7.85 g of liquid 1‑propanol, C3H8O, is combusted with 54.0 g of oxygen gas. Carbon dioxide and water are the products.
1.Chemical Reaction2 Limiting Reaction3 how many grams of CO2 released4 how many grams of the excess reactant remaining
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12/10/22

calculating work

Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 24.0 atm. Calculate the work, 𝑤, if the gas expands against a constant external pressure of 1.00 atm to a final... more
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12/10/22

Determine the lattice energy
Consider an ionic compound, MX2, composed of generic metal M and generic, gaseous halogen X.The enthalpy of formation of MX2 is Δ𝐻∘f=−663 kJ/mol. The enthalpy of sublimation... more
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12/10/22

A saturated Mg(OH)2 solution with a volume of 100ml is titrated with 0.50M HCl at 298K. 66.0 microliters of titrant are needed to reach equivalence. How many mols of OH- are present in 100 ml of Mg(OH
A saturated magnesium hydroxide solution with a volume of 100 ml is titrated with 0.50 M HCl at room temperature. 66.0 microliters of titrant are required to reach equivalence. How many moles of... more
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12/09/22

A sample of 7.85 g of liquid 1‑propanol, C3H8O, is combusted with 54.0 g of oxygen gas. Carbon dioxide and water are the products.
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