3 years ago

Why is bicarbonate is mixed with water in the leaf disc experiment?

1 answer:

amm18123 years ago

5 0

Answer:

When sodium bicarbonate is added to the water, the bicarbonate ion acts as a carbon source for photosynthesis causing the leaf disks to sink. As photosynthesis proceeds, oxygen is released into the interior of the leaf, which changes its buoyancy causing the disk to rise.

hope this helps :)

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If you use pyrotechnic visual distress signals, how many unexpired vdss must you carry on board your vessel?.

Marina86 [1]

If you use visual pyrotechnic distress signals, 6 pairs of unexpired vdss must be taken on board your vessel.

<h3>How many visual pyrotechnic distress signals to carry on the vessels?</h3>

In coastal areas, up to 20 miles from the coast, the mandatory set of six flares must consist of two red star manual flares, two red star rockets with parachutes and two floating orange smoke (smoke) flares.

With this information, we can conclude that If you use visual pyrotechnic distress signals, 6 pairs of unexpired vdss must be taken on board your vessel.

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