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Classify each reaction. (33) Na2CO3(s) + SiO2(s) → Na2SiO3(l) + CO2(g) (34) 2 Mg(NO3)2(s) → 2 Mg(NO2)2(s) + O2(g) (35) 3 HNO2(aq) → 2 NO(g) + NO3-(aq) + H3O+(aq) (36) BaCO3(s) → BaO(s) + CO2(g) (37) 2 Eu2+(aq) + 2 H+(aq) → 2 Eu3+(aq) + H2(g) (38) [Ag(NH3)2]+(aq) + 2 CN-(aq) → [Ag(CN)2]-(aq) + 2 NH3(aq) (39) MgO(s) + 2 HCl(aq) → MgCl2(aq) + H2O(l) (40) CaO(s) + SO2(g) → CaSO3(s) (41) 2 NO(g) + O2(g) → 2 NO2(g) (42) N2(g) + 2 O2(g) → 2 NO2(g) For more Details.
Maria wants to plant a small tomato garden in her yard. She bought 25 tomato plants, and she has read that ideally tomatoes are planted in a square grid
A 4.40 g nugget of pure gold absorbed 289 J of heat. The initial temperature was 21.0°C. What was the final temperature?
Draw the structure of each product obtained when the given compound is treated with the reagent specified below: a. CH3C(=O)CH2CH2C(=O)OCH3 (1,4-dioxacyclohexane compund) + HBR (reagent)
A certain substance has a heat of vaporization of 29.75 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.00 times higher than it was at 287 K
Define why trans-p-anisalacetophenone would be expected to be additional stable than the corresponding cis isomer.
An enzyme reaction, in 2ml of 0.08 M of an acetate buffer, pH=4.76. During this reaction 2micromol H+ was produced
Calculate the pH at the equivalence point for the titration of 0.170 M methylamine (CH3NH2) with 0.170 M HCl. The Kb of methylamine is 5.0× 10-4.
explain the problems that might be encountered when constructing a pjc and a bonded crown on adjacent teeth. give an
a student has sample of hno3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then
A 86 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
Predict whether reactions should occur between aqueous solutions of the following compounds. If so, write balanced molecular and net ionic equations for the reactions. Include physical states.
1. A chemist wanted to amke 3-hydroxy-pentanal via an aldol condensation a. What two aldehydes could be used to make this product. b.What 3 other products could form. 2. Write a mechanism for the aldol reaction between acetaldehyde and benzaldehyde
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