Answer:
maybe they think it will make them magical?
Explanation:
<h2>Puberty</h2>
Explanation:
- Puberty is defined as <u>the physical changes that occur in the body as sexual development is stimulated by hormonal changes.</u>
Puberty is the phase of a person's life during which several changes takes place in his body making him sexually mature. Development of secondary sexual characters is also seen in puberty.
In males the puberty occurs between the age of 13-16 years. It is characterized by onset of spermatogenesis. The hormone that initiates puberty in males is testosterone.Secondary sexual characters like growth of beard, chest hair, pubic hair etc. also become prominent
In females puberty occurs between the age of 10-14 years. It is characterized by onset of menstrual cycle. The hormone that initiates puberty in females is estrogen. The secondary sex characters like enlargment of breast, broadening of hip, menstruation etc. become prominent.
Answer:
Concentrations:
1. 12 g salt in 3 L water = 0,4 g salt / 100 ml water
2. 12 g salt in 6 L water) = 0,2 g salt / 100 ml water
3. 30 g sugar in 5 L water) = 0,6 g sudar / 100 ml water
Explanation:
The given data are expressions to deal with the concentration of solutions (a kind of homogeneous mixtures).
There are many forms or units to express the concentrations of the mixtures.
The three cases show mass of solute (salt or sugar) in volume of solvent (water).
One form to express the concentration of the solutions is as mass of solute per 100 mililiters of solvent, which is useful to compare with solutibility tables.
You can do that using the formula:
- (mass of solute in grams / volume of solvent in mililiters) × 100.
To find the concentrations of the given solutions, first you need to convert the volume of the solvent to mililiters (ml):
- 3 L water × 1,000 ml / L = 3,000 ml water
- 6 L water × 1,000 ml / L = 6,000 ml water
- 5 L water × 1,000 ml / L = 5,000 ml water
Concentrations:
1. (12 g salt / 3,000 ml water) × 100 = 0,4 g salt / 100 ml water
2. (12 g salt / 6,000 ml water) × 100 = 0,2 g salt / 100 ml water
3. (30 g sugar / 5,000 ml water) × 100 = 0,6 g sugar / 100 ml water
This is an interesting question, as we have already had space travel.
My opinion on space travel is, its very cool and completely possible. Us as a human race have evoloved so much in the past years, all I can think about is hwne will our evolution stop? The answer is never. Our human race has been blessed with self awareness, and we use it. The Human race can only go up from here!
