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The triple point of hydrogen occurs at a temperature of 13.8 K and a pressure of 0.069 atm. (a) What is the vapor pressure of solid hydrogen at 13.8 K? (b) Suppose a sample of solid hydrogen is held under an external pressure of 0.030 atm and heated from 5 to 300 K. What phase change(s), if any, will occur?
Determine the number of significant digits in each number and write out the specific significant digits.
A balloon filled with helium gas has a volume of 500 mL at pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
Require to apply to neutralize the acidity that concluded from nitrification and determine how much CaCO 3
What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?
total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 149 g of solution. The reaction
When 25.0 mL of 0.750 M CdCl2 is mixed with 40.0 mL of 0.120 M (NH4)2S, CdS precipitates from the solution. How many moles of CdS is formed.
The gas phase irreversible first-order reaction A----> 3B , is carried out in PFR where the feed is equal molar in A and inerts. the conversion under these circumstances is 50%.
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
Small helium-neon lasers emit 3.50 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
How many moles contain each of the following? 3.75 x 10^24 molecules CO2
C12H22O11(aq) + 3 O2(g) 2 H3C6H5O7(aq) + 3 H2O(l) Determine the mass of citric acid produced when 4.60 mol C12H22O11 is used.
What is the main structural feature of the azo dyes that causes them to be colored compounds?
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