Answer:
Cr(OH)4^-
Explanation:
Reducing agents are elements or compounds which loses (or "donates") an electron to an electron recipient (oxidizing agent) in a redox chemical reaction. A reducing agent is thus oxidized when it loses electrons in the redox reaction.
A reducing agent is a substance that causes another substance to be reduced. Hence for us to identify an reducing agent, we simply look at the oxidation number of a specie before and after the redox reaction. If the oxidation number is greater in the product, then it lost electrons and the substance is the reducing agent.
If we look from left to right, the oxidation number of chromium increased from +3 to +6. Hence the specie Cr(OH)4^- is the reducing agent in the reaction.
<span>Sand dunes are formed from wind
movement. There needs to be a large amount of loose sand in an area with
hardly any vegetation, enough wind to move grains of sand and some kind
of obstacle to make the blowing sand lose its momentum and settle in a
new place</span>
Answer:
The Earth's magnetic field intensity is roughly between 25,000 - 65,000 north magnetic pole is 86.50°N and 164.04°E and the south magnetic pole is 64.07°S and 135.88°E
Answer:
People holding the slinky supply the energy to make the patterns. To make pattern 1, people have to shake the slinky back and forth at a certain speed. To make pattern 2, the slinky has to be moved back and forth faster (higher frequency). To make pattern 4, the people need to move the slinky back and forth much faster. It is much easier to make pattern 1 than pattern 4 because it takes less energy. This illustrates the relationship between frequency and energy – the higher the frequency, the higher the energy.
Explanation: