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Mustard gas is a poisonous gas that was used in World War 1 and banned afterward. It causes general destruction of body tissues, resulting in the formation of large water blisters. The chemical formula for mustard gas is C4H8Cl2S. What is the molecular mass of mustard gas?
The precipitate was filtered, washed free of precipitating agent, dried, and weighed, and 0.4114 g was recovered. Calculate the percentage of Hg2Cl2 in the sample.
Your lab partner accidentally mixed some sodium chloride with your sample of Epsom salts (MgSO₄･7H₂O). You want to make a standard solution of magnesium ion, and this is the only sample of a magnesium salt you have. To determine the amount of magnesium salt in the mixture, you heat 100.00 g to drive off the water of hydration and find that the anhydrous mixture has a mass of 65.75 g. What is the mass in grams of the original salt mixture that you must add to 1.000 L of water to make a 0.1000 M solution of Mg²⁺ ion?
Find the total enthalpy for rection
2C (g) + 3H2 (g) C2H6 (g)
Given the thermochemical equations.
2C(g) + 2 O2 (g) 2CO2 (g) ∆H = -786 kJ/mol
3H2 (g) + O2 (g) 3H2O (l) ∆H = -858 kJ/mol
2CO2 (g) + 3H2O (l) C2H6 (g) + O2 (g) ∆H = +1560 kJ/mol
How many moles of ammonia are in .4L of a 3.0 M aqueous ammonia solution? If this solution is diluted to 1.0 L, what will be the molarity of the new solution?
chemical equation for benzoic acid +copper sulfate+ silicate and precipitate formed
Chalcopyrite (CuFeS2) is a principal mineral of copper. Calculate the number of
kilograms of Cu in 3.71 X 103kg of chalcopyrite.
What is the formula for ns2np4 would form in potassium
Chlorine gas (Cl2) occupies a volume of 25.0 mL at 310K. Calculate the volume it will occupy when heated to 590 K.
a gas with a pressure of 845 torrs occupies 11.0 l what will the pressure be for a volume of 2.50 l if the temperature remains constant
#339914 on Dec 2023