A drop of iquid mercury is D. <span> a pure substance and an element. This is because mercury is an element which exists as liquid in the normal or standard conditions. It is a metal that is toxic to all environments. It is pure because it is composed only of one kind of substance.</span>
Strong acids, strong bases, and salts are strong electrolyte.
The answer would be Bismuth and Nitrogen because they have the same number of valence electrons. Groups in the periodic table are arranged in columns. When it comes to neutral atoms, the number of valence electrons it has is equal to the main group of that element.
Answer:
79.2 grams of oxygen gas are required to react with 22.50 grams of n-heptane.
Explanation:
Mass of n-heptane = 22.50 g
Moles of n-heptane = 
According to reaction 1 mole of n-heptane reacts with 11 moles of oxygen gas. then 0.2250 moles of n-heptane will react with:
of oxygen gas
Mass of 2.475 moles of oxygen gas= 2.475 mol × 32 g/mol= 79.2 g
79.2 grams of oxygen gas are required to react with 22.50 grams of n-heptane.
