08/31/20

STOICHIOMETRY REACTION
How many moles of carbon disulfide are required to react completely with 12.7 L of chlorine gas according to the following reaction at 0°C and 1 atm?carbon disulfide (s) + chlorine(g)carbon... more
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08/31/20

25.00 mL of a solution containing 0.1571 M ammonia (Kb = 1.76 x 10-5) is titrated with 0.1134 M HCl. NH3 + HCl → NH4Cl Calculate pH after the addition of 47.09 mL of acid.
25.00 mL of a solution containing 0.1571 M ammonia (Kb = 1.76 x 10-5) is to be titrated with 0.1134 M HCl.NH3 + HCl → NH4ClCalculate pH after the addition of 47.09 mL of acid. (Enter your answer to... more
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08/30/20

Green plants take in water and carbon dioxide and produce glucose and oxygen gas. Calculate the molar masses of carbon dioxide, glucose, and oxygen gas.

Green plants take in water (H2O) and carbon dioxide (CO2) and produce glucose (C6H12O6) and oxygen gas (O2). Calculate the molar masses of carbon dioxide, glucose, and oxygen gas. I really only... more
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08/29/20

i need help with giving charges and understand

.Give the charge( SO3) 2-= AsO43-=.Au3PO4=_Cr2O3
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08/29/20

25.00 mL of a solution containing 0.1571 M ammonia (Kb = 1.76 x 10-5) is to be titrated with 0.1134 M HCl. NH3 + HCl → NH4Cl Calculate pH after the addition of 47.09 mL of acid.

25.00 mL of a solution containing 0.1571 M ammonia (Kb = 1.76 x 10-5) is to be titrated with 0.1134 M HCl.NH3 + HCl → NH4ClCalculate pH after the addition of 47.09 mL of acid. (Enter your answer to... more
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08/29/20

Label the reversible chemical reaction diagram 
A ⮂ B+Ca. Reactant (substrate) for hydrolysisb. Products of hydrolysisc. Reactants for synthesisd. Product of synthesis
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08/29/20

How many moles of CaCO3 are there in an antacid tablet containing 0.520 g CaCO3?
How many moles of CaCO3 are there in an antacid tablet containing 0.520 g CaCO3? How many formula units of CaCO3 are in this tablet?
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08/29/20

Label the reversible chemical reaction diagram

A ⮂ B+C a. Reactant (substrate) for hydrolysisb. Products of hydrolysisc. Reactants for synthesisd. Product of synthesise. reaction arrow for hydrologic reaction f. Reaction arrow for synthetic... more
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08/29/20

I need help setting up this problem

A dietary supplement contains 5000 IU per capsule. If the bottle recommends 2.00 capsules per day. How many IU per week are recommended.
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08/28/20

A nurse practitioner prepares an injection of promethazine... The rest in description!!!
A nurse practitioner prepares an injection of promethazine, an anihistamine used to treat allergic rhinitis. If stock bottle is labeled 25 mg/mL and the order is a dose of 12.5 mg, how many... more
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08/28/20

Use your calculator to solve and enter your response in correct e notation: 2.45e16 x 5.89e8 = ?

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08/28/20

Use your calculator to solve and enter your response in correct e notation: 6.50e15 x 22.0 *
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08/28/20

If P = 1.5, V = 13, R = 0.082, and T = 290, solve for n in the equation: PV = nRT. *
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08/27/20

What is the pH of the resulting solution?
For his titration experiment, Alex determines that the equivalence point is reached when an unknown concentration of a 75.0 mL sample of nitric acid is added with 92.5 mL of 1.0 mol/L calcium... more
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08/27/20

If a 5.01 M aqueous solution of sodium hydroxide (NaOH, 40.00 g/mol) has a density of 1.21 g/mL, what is the mole fraction of sodium hydroxide?

{hint: assume 1 L of solution} Enter your value using three significant figures.
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08/26/20

What is the condensed formula of 3-ethylheptane ?
Please write the condensed formula of 3-ethylheptane in one line.
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08/26/20

Calculating mass of BSA
Calculate the amount (mass) of BSA (50mg/ml concentration) needed to make 500 ml of 1mg/ml BSA solution.
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08/26/20

Calculate the following and report using the correct number of significant figures and scientific notation: 1020 x 4.388e18 *
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08/26/20

Calculate the following and report using the correct number of significant figures and scientific notation: 1020 x 4.388e18

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08/26/20

What is 6.25e15 x 2.40e8?

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08/24/20

1.76 g of the volatile liquid was able to fill a 288 mL Erlenmeyer flask at 99.8 kPa and 80°C.
what's the empirical formula for this gas?
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08/24/20

what's the volume of 0.50 mol/L HCl needed to neutralize 0.075 L of 0.90 mol/L of Ba(OH)2.
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08/24/20

what's the mass of barium chloride needed to make 275mL of a 0.280 mol/L solution.
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08/24/20

Why does salting out increase the partition coefficient in favour of the organic compound?
An organic compound can be extracted from a water layer by an organic solvent more efficiently if the water layer is saturated with an inorganic salt such as sodium chloride. This ‘salting out’,... more
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08/23/20

How many grams of Al(ClO4)3 (Mm=326 g/mol) must be added to 105 g of water to make a solution with a colligative molality of 0.315 m?
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