Chemistry, 30.01.2020 03:52 martinjohnsond079
Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:
ca+2
,
pb+4
,
br−
,
s−2
Answers: 3
Chemistry, 22.06.2019 03:50
Express the following number in scientific notation. 0.026890 =
Answers: 1
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
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Chemistry, 22.06.2019 21:30
What is happening when the water inside a kettle heats up and begins to boil
Answers: 1
Write the empirical formula of at least four binary ionic compounds that could be formed from the fo...
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