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Compute the pH of the solution that results while 60mL of 0.100 M NH3 is mixed with 40mL of 0.200 M NH4Cl.
what is the spectator ion for the chemical formula cl2 nabrbr2
Explain why higher levels of defects are found in solids at high temperatures and close to their melting points.
Write any assumptions you make. Calculate the total work of this expansion. If this expansion were reversible, what would the value be?
how much of this chemical would have been measured? Express in terms of measured concentration C (mg/litre) of the filtered sample?
write downnbsp a lewis structure for sbcl5 and also explain does the the octet rule is obeyed by this molecule ?explain
A sample of stoichiometric dolomite (an equimolar mixture of CaCO3 and MgCO3) has a mass of 10.00 g. What is the mass in grams of the CaCO3 component?
A 5.0 L sealed bottle containing 0.26 g of liquid ethanol, C2H6O, is placed in a refrigerator and reaches equilibrium with its vapor at -11°C. The vapor pressure of ethanol is 10 torr at -2.3°C and 40 torr at 19°C.
which the excess HClO4 was back-titrated with 8.72-mL of 0.3045 M NaOH using bromocresol green as an indicator. What is the concentration of the perchloric acid solution?
The first order decay of radon has a half-life of 3 days. How many grams of radon remain after 7.22 days if the sample initially weighs 250.0 grams
Enthalpy of combustion of ethanol(g) is -1371 kJ/mol. Temperature and pressure of intake mixture is 25 oC and 1 bar, respectively. Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
for a parallel reaction a giving b and c the reaction rate constant k1 4.8 times10-7 s-1 the selectivity between c and
Calculate the number of grams of anhydrous sodium oxalate needed to prepare 250 mL of .04500 M sodium oxalate solution.
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