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Compute the wavelength of the green line in the noticeable spectrum of excited H atoms using Bohr Theory
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take to heat the 5.5 L of water from 24 degrees C to 41 degress C? (Assume that the water has a density of 1..
At this temperature iron is in the BCC form and will dissolve (interstitial) carbon up to about 0.001 wt%. If the criterion is that the carbon concentration equals 0.0002 wt% carbon at a depth of 100 microns, how long must the exposure be
what is the concentration of chromium ion present in a 0.07092 M solution of potassium hydroxide in contact with a large excess of a precipitate
Find the pH and percent dissociation of a 0.100 M solution of a weak monoprotic acid having the following Ka value. Ka = 1.0 x 10^-5
How many calories are required to heat 25.0 g of platinum (specific heat capacity = 0.032 cal/g.K) from 24.5 oC to 75.0 oC?
The elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 15.51% O. Determine the empirical formula of ascorbic acid.
Important information about Heat and temperature, What is Heat? What is temperature? What are the various properties that account for temperature?
Calculate the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.180 M NaOH solution? Express your answer numerically to three significant figures.
how many atoms of copper are there in this wire?
water and placed in a polarimeter tube 20.0 cm long. The measured rotation was -2.17° at 25 °C. Calculate the specific rotation of the compound.
How many minutes is required for sunlight to travel from the Sun to Earth. (Assume the Sun is 93,000,000 miles from Earth and that sunlight travels at 1.86 x 105 miles per second.) how do you work this to solve.
Calculate the activity coefficient of glucose in this solution if the solution freezes at -0.66 C.
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