Concept explainers
Baking powder is a mixture of cream of tartar
msp;
u decide to make a cake one clay, and the recipe calls for baking powder. Unfortunately, you have no baking powder. You do have cream of tartar and baking soda, so you use stoichiometry to figure out how much of each to mix.
the following choices, which is the best way to make baking powder? The amounts given in the choices are in teaspoons (that is, you will use a teaspoon to measure the baking soda and cream of tartar). Justify your choice.
sume a teaspoon of cream of tartar has the same mass as a teaspoon of baking soda.
l type='a'>
i>Add a bit more than twice as much cream of tartar as baking soda.
i>Add a hit more than twice as much baking soda as cream of tartar.
i>Add more cream of tartar than baking soda, hut not quite twice as much.
i>Add more baking soda than cream of tartar, hut not quite twice as much.
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Chapter 9 Solutions
Introductory Chemistry: A Foundation
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- Consider a metal ion A2+ and its nitrate salt, In an experiment, 35.00 mL of a 0.217 M solution of A(NO3)2 is made to react with 25.00 mL of 0.195 M NaOH. A precipitate, A(OH)2, forms. Along with the precipitation, the temperature increases from 24.8C to 28.2C. What is H for the precipitation of A(OH)2? The following assumptions can be made. • The density of the solution is 1.00 g/mL. • Volumes are additive. • The specific heat of the solution is 4.18 J/g C.arrow_forwardComplete the table below for the reaction 3A(g)+B(g)2C(g)arrow_forwardConsider the equilibrium process depicted in Fig. 17.6. When does the equilibrium state occur?arrow_forward
- 9.96 Most first aid "cold packs" are based on the endothermic dissolution of ammonium nitrate in water: NH4NO3(s)NH4+(aq)+NO3(aq) H= 25.69 kJ A particular cold pack contains 50.0 g of NH4NO3 and 125.0 g of water. When the pack is squeezed, the NH4NO3dissolves in the water. If the pack and its contents are initially at 24.0°C, what is the lowest temperature that this bag could reach? (Assume that the ammonium nitrate solution has a specific heat of 4.25J g-l K-l, and that the heat capacity of the bag itself is small enough to be neglected.)arrow_forwardOne of the components of polluted air is NO. It is formed in the high-temperature environment of internal combustion engines by the following reaction: N2(g)+O2(g)2NO(g)H=180KJ Why are high temperatures needed to convert N2 and O2 to NO?arrow_forward
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