Conservation of Mass Before Experiment mass (9) After Experiment mass (9)
10
water
antacid tablet
baggie
total
3.22
3.50
3.50
baggie
total
16.72
?
Students investigating chemical reactions conducted the experiment you see here. An antacid tablet was dropped into
plastic bag containing 10 ml distilled water at 22°C. The bag was immediately zipped closed and the chemical
reaction proceeded until completion. Based on your knowledge of chemical reactions, choose all of the statements
below would apply?
Formulas
A)
The tablet completely disappeared.
B)
The total mass at the completion of the experiment is 16.729.
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The mass of the products is slightly less than the mass of the reactants.
D)
A decrease in the mass of the products is the result of the production of a
gas.
Evidence of a chemical reaction includes the production of something new:
a gas.
E)

I'm pretty sure it is b. protist

In order to understand the problems of unwanted infertility in a country — the gambia — where the desire for children and the fertility is very high, a population-based survey was undertaken. all infertile women in 24 randomly selected enumeration areas were assessed. the study included a review of the problems faced and coping mechanisms employed by infertility clients and types of health care available for infertile couples in the different types and levels of the formal and traditional health system. half of the infertile couples failed to seek formal health care, and they have to reach a certain level of care in order to be properly managed. alternative care is often sought. child fostering is also a frequent solution to childlessness. in-depth interviews revealed that traditional care like healers and spiritual leaders are frequently consulted long before formal health care. this delay could be a problem in those cases where infertility is caused by infections.