When the pH of an aqueous solution is changed from 1 to 2? Highlight to reveal answers and explanations Questions Answer Links 47 When the pH of an aqueous solution is changed from 1 to 2, the concentration of hydronium ions in the solution is (1) decreased by a factor of 2 (2) decreased by […]
Is a pure compound?
Is a pure compound? *Note: pure oxygen gas consists of molecules but it is still considered an element, rather than a compound, as the molecules are made up of a single type of element. Compounds are made up of one or more element….Pure Substances. Pure Substance Element or Compound? Consists of: Ammonia (NH3) compound ammonia […]
Does heat affect electricity?
Does heat affect electricity? Temperature affects how electricity flows through an electrical circuit by changing the speed at which the electrons travel. This is due to an increase in resistance of the circuit that results from an increase in temperature. Likewise, resistance is decreased with decreasing temperatures. How can you heat your home without electricity? […]
How does technology help the economy?
How does technology help the economy? In economics, it is widely accepted that technology is the key driver of economic growth of countries, regions and cities. Technological progress allows for the more efficient production of more and better goods and services, which is what prosperity depends on. How can technology protect us? Advancements of modern […]
How do you maintain static equilibrium?
How do you maintain static equilibrium? Static Equilibrium Identify the object to be analyzed. Set up a free-body diagram for the object. Set up the equations of equilibrium for the object. Simplify and solve the system of equations for equilibrium to obtain unknown quantities. Evaluate the expressions for the unknown quantities that you obtained in […]
Are AC and DC capacitors interchangeable?
Are AC and DC capacitors interchangeable? AC capacitor does not have polarity, but the constructions are generally based on films without any kind of electrolyte. DC is just a special case where the polarity of the voltage does not change, so you can use AC capacitors – as is – in a DC application. Why […]
What is the type of relationship between current and potential difference?
What is the type of relationship between current and potential difference? The current in a circuit is directly proportional to the electric potential difference impressed across the circuit and inversely proportional to the resistance of the circuit. What is potential difference unit? The potential difference between points A and B, VB – VA, is defined […]
Does an object with mass always have momentum?
Does an object with mass always have momentum? An object with mass will have momentum. An object which is moving at a constant speed has momentum. An object can be traveling eastward and slowing down; its momentum is westward. Momentum is a conserved quantity; the momentum of an object is never changed. Can any object […]
How do we develop our identity?
How do we develop our identity? Building a strong sense of self Define your values. Values and personal beliefs are fundamental aspects of identity. Make your own choices. Your decisions should, for the most part, primarily benefit your health and well-being. Spend time alone. Consider how to achieve your ideals. Can we change our identity? […]
What is the z-score for a 95% confidence interval?
What is the z-score for a 95% confidence interval? 1.96 What is the relationship between sample size and margin of error? Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases. What is […]