General Chemistry Answers

space vehicles use solid lithium hydroxide to remove exhaled carbon dioxide according to the equation 2lioh +co2 -> li2co3 +h2o determine the mass of carbon dioxide removed if the space vehicle carries 42.0 mol lioh

Give the pH range of the following indicator:

a) methyl red

b) bromthymol blue

c) phenolplthalein

d) universal indicator solution

what is the implication of color change in indicator

Calculate the partial pressure (in atm) of Ar in a flask that contains a mixture of mols 1. _____ of Ar and 5.0 mols of Ne in the flask with a total pressure of 2.6 atm.

Titanium is a strong, lightweight, corrosion-resistant metal that is used in the construction of rockets, aircrafts, and jet engines. It is prepared by the reduction of titanium (IV) chloride with molten magnesium between 950 oC and 1150 oC:

TiCl4(g) + 2Mg(l) → Ti(s) + 2MgCl2(l)

In a certain operation 3.54 x 104 kg of TiCl4 is reacted with 1.13 x 104 kg of Mg.

1. Titanium is a strong, lightweight, corrosion-resistant metal that is used in the construction of rockets, aircrafts, and jet engines.  It is prepared by the reduction of titanium (IV) chloride with molten magnesium between 950 oC and 1150 oC:

TiCl4(g) + 2Mg(l)  → Ti(s) + 2MgCl2(l)

In a certain operation 3.54 x 104 kg of TiCl4 is reacted with 1.13 x 104 kg of Mg.

Determine the mass of Co2 produced if 50grams of C5H12 is burned with O2

Preparing a 0.1M HCl solution from 6M HCl solution

Calculate the volume of 6M HCl solution needed to make 100 mL of 0.1M HCl

solution. Using a pipet, measure this volume of 6M HCl and transfer to a clean and

dry 100 mL volumetric flask. Add distilled water up to the 100 mL mark. Mix

thoroughly.

Preparing a 0.1M HCl solution from 6M HCl solution

Volume of HCl = ________________

Calculation

DATA AND RESULTS. Used formula

Chemicals

Caustic soda

Sodium chloride

Ethanol

Limewater

Ammonium chloride

Preparing a 0.10M NaOH solution

Calculate the number of grams NaOH needed to prepare 250 mL of 0.1M NaOH

solution. Weigh this amount of NaOH in a 50 mL beaker and dissolve with a little

amount of distilled water. Transfer this into a clean and dry 250 mL volumetric flask.

Add distilled water up to the mark and swirl the flask gently to mix thoroughly.

Transfer this solution into a clean and dry plastic bottle. Label it properly and

store it in your locker. This will be used for the experiment on Acid-Base Titration.

Preparing a 0.10M NaOH solution

Grams of NaOH = _______________

Calculation:

Preparing a 10% v/v acetic acid solution

Determine the volume of acetic acid needed to prepare 100 mL of 10% v/v acetic

acid solution in water. Using a pipet, measure out the calculated volume of the acid

and transfer to a dry, clean 100 mL volumetric flask. Add distilled water with swirling

up to the mark.

Preparing a 10% v/v acetic acid solution

Volume of acetic acid= ________________

Calculation: