Answer:
you will run 720 meters
Explanation:
because 4 times 60 is 240 and 240 times 3 is 720
Answer:
Both have a pH greater than 7, but NH₃ has a lower pH than KOH.
Explanation:
- Both of NH₃ and KOH are bases (can produce OH⁻), so both have a pH greater than 7.
- NH₃ is considered as a weak base (not completely ionized), while KOH is a strong base (completely ionized).
- If both NH₃ an KOH has the same concentration, KOH produces OH⁻ higher than that of NH₃.
- So, NH₃ has a lower pH than KOH.
- Thus the right choice is:
<em>Both have a pH greater than 7, but NH₃ has a lower pH than KOH.</em>
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Many different chemicals burn and produce flames, but different chemicals have different chemical properties, and produce different amounts of energy when they burn. Those which produce more energy, will also produce hotter flames.
Answer:
These elements are of s-block and the all have
ns¹ (n = 1 to 7) electronic configuration
