As can be seen in the attached image, α-pyrone has a highly electrophilic carbon atom, since it is attached to two oxygen atoms that are electronegative and subtract electrical charge from the carbon, leaving it with a <u>positive partial charge</u>. By virtue of the above, <u>the bromine atoms, which have an important electron density that makes them good nucleophiles, will be attracted to the aforementioned carbon due to their positive charge</u>, thus favoring the substitution product to a greater extent than that of addition.
graphite is a form of carbon in which carbon atoms are arranged in a layer.
Answer:
drive an electric car to work, walk to work, carpool to work
Explanation:
The orders of the activities from the greatest to least impact to reduce consumption of fossil fuels, is one in which the least fossil fuel is used;
- The goal of driving an electric car is to reduce dependence on fossil fuels.
- Electric cars prides as an automobile system with no carbon emission nor usage.
- Walking to work does not require carbon consumption too.
- Carpool involves use of fossil fuels.
Answer:
KNO₃ → 1 mol of K⁺ ; 1 mol of nitrate (1 mol of oxygen + 3 mol of nitrogen)
Na₂SO₄ → 2 mol of Na⁺ ; 1 mol of sulfate ( 1 mol of sulfur + 4 mol of oxygen)
Ca(OH)₂ → 1 mol of calcium; 2 moles of hydroxide
(NH₄)₂SO₃ → 2 mol of ammonium; 2 mol of sulfite (1 mol of sulfur + 3 mol of oxygen)
Ca₃(PO₄)₂ → 3 mol of calcium: 2 mol of phosphate (1 mol of phosphorus + 4 mol of oxygen)
Al₂(CrO₄)₃ → 2 mol of aluminum ; 3 mol of cromate (1 mol of Cr + 4 mol of oxygen)
Explanation:
Let's verify all the dissociations:
KNO₃ → K⁺ + NO₃⁻
Na₂SO₄ → 2Na⁺ + SO₄⁻²
Ca(OH)₂ → Ca²⁺ + 2OH⁻
(NH₄)₂SO₃ → 2NH₄⁺ + 2SO₃⁻²
Ca₃(PO₄)₂ → 3Ca²⁺ + 2PO₄⁻³
Al₂(CrO₄)₃ → 2Al³⁺ + 3CrO₄⁻²
Answer:
Percent by mass is calculated by tihis formula, Mass of solute (g) ÷ mass of solution (g)] × 100.
Explanation:
For example: if you have a solution 45% m/m (mass percentege), you have 45 g of solute in 100 g of solution.