Hòa tan 1 lượng hh gồm al và al2o3 trong dd h2so4 loãng vừa đủ thu đc dd X trong đó số nguyên tử oxi gấp 19,5 lần số nguyên tử nhôm. a:tính nồng độ phần trăm của chất tan có trong dd X, b :cho 82,8 gam dd X tác dụng với V lít dd NaOh 1M, sau phản ứng thu đc 14,04 gam kết tủa. Tìm V​

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Compare and contrast solutions and suspensions

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?