Answer:
false
Explanation:
a physical property can be observed and stay the same but a chemical property can't
Ultraviolet has more energy. You can tell because it has a shorter wave. The longer the wave is on the electromagnetic spectrum the less energy is stored.
Speed = distance ÷time
speed = 4÷1=4
the answer is 4 km/hour
Answer:
It will reduce
Explanation:
The time it will take to bake the cake will reduce when the temperature is increased by an additional 20°F .
Temperature change has a considerable effect on reaction rates since temperature is directly proportional to the average kinetic energy of reacting particles.
Generally reaction rate varies as temperature directly.
Therefore, the baking time will reduce as temperature increases.
Answer:
0.137 M NH3
Explanation:
First divide the mass of NH3 by the molar mass of NH3, and then divide by the volume to get molarity.
0.583 g / 17.031 g/mol = 0.0342 mol NH3
0.0342 mol NH3 / 0.250 L = 0.137 M NH3
