At the other extreme, a 10 M solution of NaOH would have a pH of 15. Numerical examples from Shipman, Wilson and Todd. In pure water, the molar concentration of H + ions is 10-7 M and the concentration of OH-ions is also 10-7 M.
In order to tell if a guava is ripe, squeeze it gently. If it gives under your fingers, its ripe. 2. Look for any blemishes on the guava. You want to try to select guavas that are blemish-free. Blemishes or bruises can mean the fruit is bad or will not taste good. 3. Check the color of the guava. Ripe guavas are those that have gone from bright green to a softer yellowish-green color. If you see a touch of pink on the fruit, it is in its prime. If you don't find any that are yellow, you can always buy green guava and wait for them to ripen.
Guava trees are native to rainforests of Mexico and South and Central America. The tree is an evergreen that can grow up to 33 feet tall, and has white, fragrant, 1-inch flowers that bloom in the spring. The fruit is green, round and up to 4 inches long.ruit Trees in the Rainforest. Fruit Trees in the Rainforest. Rainforests are regions around the globe that have warm, humid temperatures and...