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On a brisk walk, a person burns about 325 Cal/h. At this rate, how many hours of brisk walking would it take to lose a pound of body fat? (See Exercise 9)
Exercise 9
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 150-lb person burn during 8 hours of sleep?
What is the experimental yield (in g of precipitate) when 18.6 mL of a 0.634 M solution of barium hydroxide is combined with 19.5 mL of a 0.558 M solution of aluminum nitrate at a 85.4% yield
What fragmentation would give rise to the peak at m/z 45 in the Mass Spectrum? C3H8O. Loss of hydroxyl group.
Name 4 properties of a compound that is directly influenced by the polarity of the compond. And state the 2 most important factors that affect the
An end-centered orthorhombic unit cell has a cereal-box shape with atoms at each corner and on the face of two opposite ends. How many atoms are in a unit cell
Show step-by-step mechanisms to produce the indicated polymeric substrate products. include an appropriate termination step where needed.
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base.
KHC8H4O4, was prepared by dissolving 0.4877 g of potassium hydrogen phthalate in about 50 mL of water. Titration with a KOH solution required 18.81 mL to reach a phenolphthalein end point. What is the molarity of the KOH solution
The original volume is 70. cm3. If the combustion of this mixture releases 855 J of energy, to what volume will the gases expand against a constant pressure of 640. torr if all the energy of combustion is converted into work to push back the pisto..
solid aluminum reacts according to the balanced equation. if a total of 830 kj of heat is produced in the reaction as
A gas sample has an original volume of 760 ml when collected at 720 mm and 25degC. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 30degC?
At room temperature (20), milk turns sour in about 63 hours. In a refrigerator at 3, milk can be stored three times as long before it sours.
question nitrogen and hydrogen gases react to form ammonia gas. n2g 3 h2g 2 nh3g at a certain temperature and pressure
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