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What's more significant an affect on atomic size, an increase in nuclear charge or increase in occupied energy levels within a group?
How many outer atoms and lone pairs are present in a molecule with a see-saw geometry
What is the final temperature in a squeezed cold pack that contains 50.0 g of NH4NO3 dissolved in 135 mL of water?
What is the correct electron configuration for copper Answer a. [Ar]4s23d8 b. [Ar]4s23d9 c. [Ar]4s13d10 d. [Ar]3d10 e. [Ca]3d9
On a quantitatively labeled number line, draw where the radial nodes of the 1s, 2s, and 3s hydrogen wavefunctions sit.
It takes 12 hours for half of the He in a container to leak out. If the same container is refilled with Ne, how long will it take for half of the Ne to leak out
The reaction of coal and water at a high temperature produces a mixture of hydrogen and carbon monoxide gases. This mixture is known as synthesis gas (or syngas). What mass of water is required for the formation of 175 grams of carbon monoxide? C(..
If the pressure of gaseious chloroform in a flask is 195 mm Hg at 25 degrees celsius and its density is 1.25 g/l, what is the molar mass of chloroform?
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
calculate the osmotic pressure in torr of 6.00 L of an aqueous 0.889 m solution at 30.°c, if the solute concerned is totally ionized into three ions.
write the most stable lewis structure for C2F4 and state the hybridization of the carbon atom
Calculate the rms (average) speed of ClO2 atoms or molecules at 297 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant.
In the formation of an acetal one mole of aldehyde requires which of the following? a. one mole of alchol b. two moles of alcohol c. one mole of alcohol and one mole of water d. two moles of water
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