The test for this is fairly simple.
We take a glowing match or splint near the gas sample, if the glow intensifies, oxygen is present.
If a lit splint or match goes out with a popping sound, this means that hydrogen is present.
Answer:
Due to gravitational Force the water exerts more pressure at "ground floor" than at "2nd floor".
Explanation:
2OF2(g) —> O2(g) + 2F2(g) hope that helps
Answer: False
Explanation:
AC change directions and DC only flow in one direction
Answer:
Dolphins use a method called echolocation to detect things such as obstacles and prey in the water. If a dolphin swimming in seawater at 25°C sends a 220-dB click with a frequency of 120.0 Hz, and then detects the reflection of the click exactly one-twentieth of a second later, approximately how far away is the object?
