Answer:
Explanation:
Solution required is .15 M 500 mL sodium fluoride .
molecular weight of sodium fluoride = 42
one mole of sodium fluoride = 42 grams
No of moles contained in the solution of .15M , 500 mL solution
= .15 x 0.5 moles = .075 moles
1 mole = 42 g
.075 moles = .075 x 42 = 3.15 grams .
So mass of sodium fluoride required = 3.15 g .
bacterial growth
Explanation:
Excessive bacterial growth is one of the example of a natural process that causes water pollution.
Pollution is the undesired concentration or harmful introduction of a particular body into the environment and causes harm overall.
- Pollution can result from both natural and anthropogenic sources.
- Anthropogenic causes of pollution are the most common due to activities of human beings.
- Natural causes of pollution results from the activities of nature in itself.
- From the given options, the bacterial growth is an natural process of pollution.
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A. It receives a hydrogen ion
Answers:
<h2>The symbiotic relationship that occurs between an orchid and a tree would be classified as commensalism. Most orchids are epiphytes, which mean that that they grow on other plants. This benefits the orchids because they can grow on top of the canopy, which prevents the orchids from being walked on or eaten by ground-dwelling organisms.</h2><h3 /><h3>I HOPE TO IT'S HELP YOU:)</h3>
The answer is 250 inches 3