4 Please answer the following question according to the Law of Conservation of Matter: Sam mixes 40 grams of backing soda with 20 grams of vinegar to produce a chemical change. After the chemical reaction happens, Sam is left with a clear liquid that has a mass of 50 grams and a gas that has a mass of
_.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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explanation:

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