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英語 高校生

下から15行目のthrow whichのthrow とはなんですか?

y II Day 12 15 5 Negro Leagues Baseball was a collection of major and minor-league baseball leagues that were the first to showcase black team sports on intertwined with the African American and American experience not only a national scale. Launched in 1895, the leagues, as with jazz, became as a cultural element, but as a lucrative business endeavor. team The leagues were not under central management, and schedules and composition League, were changeable from season to season. Appearance and disappearance of leagues was common: the National Colored Baseball for instance, collapsed after only two weeks of operations. Latins, especially Cubans, were also a significant presence on teams. In these ways, the Negro Leagues were quite similar to their white counterparts which would eventually consolidate into Major League Baseball. Blacks near the beginning of the 20th century had only a fraction of whites' purchasing power, so the emergence of the Negro Leagues might have seemed unlikely. However, the Negro Leagues had two main draws that accounted for its business success. The first was a deep reserve of athletic talent. After blacks were formally excluded from white leagues in the 1880s, the Negro Leagues were the sole organization through which black players could work professionally. The quality of Negro Leagues 20 players was high, and substantiated through exhibition matches between Negro Leagues and Major League teams: over the years, both had their fair share of wins and losses in these matches. Another reason for the success of the Negro Leagues was an increasingly affluent black fan base. Driven by American industrialization, blacks were concentrating in major cities such as New York City, Chicago, and Atlanta. Usually barred by custom-and in the South by law-from attending many white entertainment outlets, blacks turned to Negro Leagues games. As a result of these factors, by the 20th century the Negro Leagues were earning a combined millions of dollars. This profitability ended with the desegregation of Major League Baseball. Black fans began attending Major League games, starving the Negro Leagues of its core revenue source. By 1951, the Negro Leagues had ended, although a succession of black star athletes in the Major League had begun.

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化学 高校生

【酸化還元】 オゾンO3の半反応式です。 1枚目の画像はセミナーにあったもので2枚目の画像は自分が思った半反応式です。ネットで調べたところ自分で考えた半反応式が書かれていました。セミナーの半反応式の両辺に2H+を足したら自分の思った半反応式になるのはわかったのですがなぜセミ... 続きを読む

酸化還元反応 酸化 → 君は,同時におこり、酸化還元反応という。 〈例〉 CuO+H2 Cu+H2O H原子: 0→+1 酸化数増加, H2 (H) は酸化された。 +2 0 20 +1 Cu 原子: +20酸化数減少, CuO (Cu) は還元された。 2 酸化剤と還元剤 ●酸化剤と還元剤 酸化剤 相手の物質を酸化し、自身は還元される物質 2CO2+2H+ +2e^ 還元剤 相手の物質を還元し,自身は酸化される物質 酸化剤 電子を受け取る反応 還元剤 酸化数増える 電子を放出する反応 Cl2 Cl2+2e- 2C1 Na Na → Na++e- HNO3 (濃) HNO3+H++e¯ + H2O+NO2 ) H2S H2S S+2H+ +2e- HNO3 (希)) HNO3+3H++3e- ← 2H2O +NO (COOH)2 (COOH)2 H2SO4 (熱濃) H2SO4+2H+ +2e- 2H2OSO KI 2I¯ - I₂+2e- KMnO4 MnO4 +8H++5e- Mn2+4H2O FeSO4 Fe2+ K2Cr2O7 Cr2O72-+14H++6e- 2Cr3++7H2O SnCl2 Sn2+ 03 (03+H2O +2e O220H- Na2S203 H2O2 H2O2+2H+ +2e 2H2O H2O2 SO2 SO2+4H++4e S+2H2O SO2 2S2032- H2O2 SO2+2H2O → → Fe3+te- Sn4+ +2e- S402-+2e- O2+2H+ +2e- SO2+4H++2e- ①赤紫色から淡赤色(無色に近い)に変化する。 中性~塩基性では次のように反応する。 MnO4-+2H2O+3e- MnO2+40H(MnO2 の黒色沈殿が生成する) 92 ()

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