Suppose 25 g of reactant A is mixed with 45 g of reactant B. After a chemical reaction takes place between A and B, which statement is correct?
a. The total mass of products plus any unreacted reactants will be 70 g.
b. The total mass of products plus any unreacted reactants will be less than 70 g.
c. The total mass of products plus any unreacted reactants will be more than 70 g.
d. The total mass of products will be 70 g.
a
You might also like to view...
A series circuit has a 50-Hz ac source, a 40-? resistor, a 0.70-H inductor, and a 60-?F capacitor, as shown in the figure. The rms current in the circuit is 1.6 A. What is the voltage amplitude of the source?
A. 390 V B. 330 V C. 270 V D. 220 V E. 190 V
When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
A) slowed. B) speeded up. C) not affected.
Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. Half way between the two plates the electric field has magnitude E
If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates? A) 4E B) 2E C) E D) 0 E) E/2
Of all the useful alkanes, which petroleum-based
product has molecules that show the largest continuous-chain structure? a) gasoline b) asphalt c) paraffin wax d) kerosene