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How long of a chain is required?
1. How long of a chain would I get if I made it out of 1.00 mole of sodium atoms (in metres)
2. Same for Chlorine atoms
A 4.00g sample of an ideal gas occupies 1.24L at 23 degrees Celcius and 1.12bar. What will be its volume at 14 degrees Celcius and 1.50bar?
Aluminum displaces cobalt from a 0.2 M solution of cobalt(II) perchlorate. Cobalt does not displace chromium from a solution of 0.2 M chromium (III) nitrate. Aluminum metal does not displace calcium from a 0.2M solution ...
the elements of 3d transition series are given as:sc, ti, v, cr, Mn, fe, Coanswer the following: (a) write the element which shows max. no. of oxidation states.why? (b)which element has highest M.P (c) which elements is ...
Consider a 0.65 m column with van Deemter parameters A=0.22 mm, B=21.7 mm mL/min, and C=0.018 mm min/mL. If it takes at least 85 theoretical plates to fully separate two solutes, what range of flow rates can be used to s ...
1. A Rolaids tablet has 550 mg of calcium carbonate and 110 mg of magnesium hydroxide. a) Write the two neutralization reactions with stomach acid (assume HCl, don't combine reactions) b) If the acid concentration is 4.0 ...
A sample has a specific heat of 0.155 cal/g·°C. How much energy will be required to raise the temperature of the sample from 20.0°C to 35.0°C if the sample has a mass of 8.0 g?
Explain the geochemical differences between acidic mine waters and basic mine waters.
Question 1 In contrast to going without food, the human body can survive only about __________ days without water. A. 3 B. 7 C. 11 D. 15 Question 2 Which of the following sources of water is most likely to contain contam ...
If 62.8 g Ca react with 92.3 g HCl according to the reaction below, how many grams of hydrogen gas will be produced, and how many grams of the excess reactant will be left over? Unbalanced equation: Ca + HCl → CaCl2+ H2 ...
A 425-m 3 (15,000 ft 3 ) basin, equipped with 10 gas dispersers of a new design, is to be installed for stripping hydrogen sulfide, H 2 S, from wastewater. The dispensers, each to use air at a rate of 7:08 × 10 -3 m 3 / ...
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