Answer: D . A car that moves at a constant speed in one direction.
Explanation: D is the answer because a car moving in a constant speed represents a balance force because the speed is constant and the forces are balanced or , when a car travels at a constant speed, the driving force from the engine is balanced by resistive forces such as air resistance and friction in the car's moving parts.
0.4266 moles of C₂H₆O
Explanation:
The problems asks for the number of moles in 25 mL of C₂H₆O with a density of 0.785 g/mL.
First we calculate the mass of C₂H₆O:
density = mass / volume
mass of C₂H₆O = density × volume
mass of C₂H₆O = 0.785 × 25
mass of C₂H₆O = 19.625 g
Now we calculate the number of moles of C₂H₆O:
number of moles = mass / molecular weight
number of moles of C₂H₆O = 19.625 / 46
number of moles of C₂H₆O = 0.4266 moles
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number of moles
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Answer:
2 atoms
Explanation:
Because it contain one double bond
Answer:Scientific literacy is the knowledge and understanding of scientific concepts and processes required for personal decision making, participation in civic and cultural affairs, and economic productivity. It also includes specific types of abilities.Science literacy is important because it provides a context for addressing societal problems, and because a science- literate populace can better cope with many of its prob- lems and make intelligent and informed decisions that will affect the quality of their lives and those of their children.
Explanation:
Answer:
D
Explanation:
Pure water is a compound made from two elements - hydrogen and oxygen. The ratio of hydrogen to oxygen in water is always 2:1. Each molecule of water contains two hydrogen atoms bonded to a single oxygen atom.