Answer:
15m
Explanation:
vi = 0
vf = 10
a = -9.8
10^2 = 0 + 2(-9.8)(x2-x1) = -5.1
20-5.1 = 14.9m = 15m
Answer:
Alkali metals are highly reactive elements that appear to be silver and they are found in group 1 of the periodic table. It consists of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). As you go further down the group, the more reactive they are. Those elements all react to water and air, so they must be kept in oil to preserve their state.
Answer:
Final temperature = 25.71°C
Explanation:
By using formula Q=mcΔT
let's say x is final temperature
950 = 150.1 × 4.18 × ( x - 24.2 )
950 = 627.418 × ( x - 24.2)
950 = 627.418x - 15183.5156
627.418x - 15183.5156 = 950
627.418x = 950 + 15183.5156
627.418x = 16133.5156
x = 16133.5156 / 627.418
x = 25.71 °C
So...the final temperature is 25.71 °C
Explanation:
Red cabbage contains a water-soluble pigment called anthocyanin that changes color when it is mixed with an acid or a base. The pigment turns red in acidic environments with a pH less than 7 and the pigment turns bluish-green in alkaline (basic), environments with a pH greater than 7.
4 Ga (s) + 3 O₂ (g) → 2 Ga₂O₃ (s)
where:
(s) - solid
(g) - gas
Explanation:
At high temperature gallium (Ga) will react with oxygen gas (O₂) to produce solid gallium(III) oxide (Ga₂O₃).
Learn more about:
balancing chemical reactions
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