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Calculate how many joules are needed to heat 18.2g of tin from 24C° to 37.7C°?
We needed a 50ml of a 0.1 M Tris buffer pH 9.0 then we added 1.0 N HCl or 1.0 N NaOH and water now calculate the theoretical volumes of 1.0 M Tris base?
The methane is heated by a stream of saturated steam entering the heat exchanger at 1.9 bar and leaving as a liquid at 60.0°C. Find the volumetric flow rate of saturated steam into the heat exchanger by following the steps below
An experiment shows that a 115 mL gas sample has a mass of 0.169 g at a pressure of 699 mmHg and a temperature of 31C.What is the molar mass of the gas?
calculate the pH formed by mixing 100 mL of 0.20 M HCL with 50 mL of 0.30 M NaOH.
If you have a white powder that could be either Epsom salt or table salt, how could you decide which one it is
What is the chemical formula of the precipitate that forms when a a aueous solution of sodium chloride is mixed with an aqueous solution
Calculate the number of molecules in 7.00 moles H2S, Using Avogadros number calculate the number of molecules in 7.00 moles H2S
Calculate rate constant for 1. level reaction where 81% of the matters have already react after 27 seconds.
How many moles of cobalt (Co) atoms are there in 5.00 x 10^9 (5.00 billion) Co atoms? Enter your answer in scientific notation.
Comment on whether these are made of the same materials or not, and explain your response. The density is different in each, so they are made of different materials.
The amount of energy released when an electron adds to a neutral atom to give a negative ion is called the atom's electron affinity
A 2.500 gram sample of a hydrate of calcium sulfate loses 0.523 grams of water when heated. Determine the mass percent of water in the hydrate and the formula of the hydrate.
The freezing point of 3.5 grams of an unknown organic compound in 100 ml of benzene is 5.0 c calculate the molecular weight of the unknown compound.
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