Identify which one of these are exact numbers. (can be more than 1)
a. 2.54 cm ( the number o...
Identify which one of these are exact numbers. (can be more than 1)
a. 2.54 cm ( the number of centimeters in exactly 1 in)
b. 56.00 s ( a time measured by a stopwatch)
c. 4 choices ( the number of choices in this list)
d. 3 lbs ( the weight of an object measured on a scale )
Answers: 2
Chemistry, 22.06.2019 04:30
Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20Β°c what would have have been the final temperature of the water
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What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol
Answers: 1
Chemistry, 22.06.2019 21:30
Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) β 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.
Answers: 1
Chemistry, 22.06.2019 23:30
If maltose undergoes hydrolysis what subunits does it results to?
Answers: 2
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