Chemistry, 25.10.2019 02:43 zachisthequeen2002
90.0 ml of h2o is initially at room temperature (22.0∘c). a chilled steel rod at 2.0∘c is placed in the water. if the final temperature of the system is "21.1" ∘c, what is the mass of the steel bar? specific heat of water = 4.18 j/g⋅∘cspecific heat of steel = 0.452 j/g⋅∘c
Answers: 1
Chemistry, 21.06.2019 14:10
The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?
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Chemistry, 22.06.2019 11:00
Which element would mostly likely have an electron affinity measuring closest to zero
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Chemistry, 22.06.2019 17:50
Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?
Answers: 2
90.0 ml of h2o is initially at room temperature (22.0∘c). a chilled steel rod at 2.0∘c is placed in...
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