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In a beaker of boiling water, there are many bubbles forming throughout the liquid. What gas comprises the bubbles?
explain the main concept behind the VSEPR theory of molecular shape. how do both number and type of electron pairs influence the shape of a molecule?
what are the pH and the change in pH after the addition of 0.054 mol hydrochloric acid to the buffer solution?
What is the difference between a strong acid and a weak acid. Calculate [H30+] in each aqueous solution at 25 C and classify each solution as acidic or basic one.
Suppose that 28 g of gold is initially at 29.0 degrees celsius. What is the final temperature gold upon absorbing 2.25 kJ of heat?
Photoheterotrophic microorganisms that use photoenergy, but depend on organic matter as a carbon source, are abundant and widespread
A gas expands and does P-V work on the surroundings equal to 325J. At the same time, it absorbs 127J of heat from the surroundings. Calculate the change in energy of the gas. How do I solve this?
calculate the approximate mass of KHP required to react with 40.0 mL of 0.125 M sodium hydroxide in titration.
Consider the following cell: Pt|H2(g, 0.670 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.15 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion con..
How many molecules of triclosan are in a tube of toothpaste?
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
A piston has an external pressure of 14.0 torr. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.530 liters.
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
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