Answer:
You manage to find a bottle of bromothymol blue and a few extra beakers. You take one of the empty beakers and add some of the first unlabeled solution and some indicator.
The color changes to yellow.
You then add some solution from the other unlabeled flask into this beaker and see the color change to blue.
What are the identities of each unlabeled solution?
Explanation:
Bromothymol blue is a dye and it is used as an indicator.
It is used as a pH indicator.
In acids, it becomes yellow n in color.
In bases, it turns blue.
You take one of the empty beakers and add some of the first unlabeled solution and some indicator. The color changes to yellow.
That means the unlabeled solution is an acid.
You then add some solution from the other unlabeled flask into this beaker and see the color change to blue.
It is a basic solution.
Answer:
All plants present in the plant kingdom are separated by into smaller groups.The smaller groups contains plant species which are more similar to one another.
Some of the characteristics through which plant species can be separated are:
Gymnosperm or angiosperms: Pine are gymnosperm plants whereas strawberry plants are angiosperms. Cactus is also a gymnosperm.
Their location: Plants can be separated based on their habitats. For example, Cactus are desert- plants whereas pine and strawberries are not desert plants.
They are seed- producing plants or spore producing plants: pine are spore producing plants. Strawberry are seed-producing plants.
Answer:
From point, 1 mole of water = molar mass of water =18g 20 moles of water = 18 g x 20 = 360g (iv) From point, 6.022 x 1023 molecules of water = 1 mole = 18g of water 1.2044 x 1025 molecules of water Therefore, points (ii) and (iv) represent 360 g of water.