The correct awser is the D/the 4th one
★ « <em><u>what is oxidation number of S in H2SO5??</u></em><em><u> </u></em><em><u>»</u></em><em><u> </u></em><em><u>★</u></em>
- <em><u>it's </u></em><em><u> </u></em><em><u>6</u></em><em><u>!</u></em><em><u>!</u></em>
Explanation:
- <em>Oxidation number of S in H2SO5 is 6 .</em>
Answer:
Final temperature of the mixture is 50°C
Explanation:
This is a typical calorimetry problem, where the heat yielded by a compound is immediately won by another.
Water at 90°C raise the temperature of water at 10°
Density of water = 1g/mL
Mass of water = 100 g, because the volume is 100mL
If the two pieces of water are in a calorimeter where heat is not released or gained, the sum of both heats is 0
4.18 J/g°C . 100 g ( T°final - 90°C) + 4.18 J/g°C . 100 g ( T°final - 10°C) = 0
418 J/°C T°final - 37620 J + 418 J/°C T°final - 4180J = 0
836 J/°C T°final - 37620J - 4180J = 0
836 J/°C T°final = 41800J
T°final = 41800J / 836 °C/J = 50°C
<h2>when is ph scale?</h2>
- pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
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