Electrical motors work based on the fact that a wire carrying current can produce a ______________ field, which can lead to production of mechanical energy through rotation. A gravitational B parallel C magnetic D alternating
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Maki uses 20 gallons of a solution with an unknown ethanol concentration and 60 gallons of a 12% ethanol solution to make 80 gallons of a 10% solution. What is the value of x, the concentration of the unknown ethanol solution?. a. 0.02. b. 0.04. c. 0.05. d. 0.08
Which component is required for the activation of some enzymes?a) Presence of a co-factor b) Basic pH levels in the substrate c) Higher enzyme concentration d) Lower temperature in the substrate
Adding solvent or removing solute from a soltuion is called __________, and a solution is said to be _______________ if it has more solute.
Which is a characteristic property of acids? A-they, turn blue litmus paper red . B-they, turn red litmus paper blue. C-they tastes bitter D-they don't react with metals
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A reaction rate is typically expressed as the change in the amount of reactants or products over a certain period of time. So the option b is correct.
The rate of a chemical reaction can be measured by monitoring the number of moles or molecules of a particular substance consumed or produced per unit of time. Hence, the expression "number/time" best represents a reaction rate. For example, if we observe the formation of 5 moles of product X in 2 minutes, the reaction rate of X would be 5 moles per 2 minutes (5 moles/2 minutes). This quantitative approach allows scientists to study reaction kinetics and understand the speed at which reactions proceed, enabling the optimization and control of various chemical processes. Hence option b is correct.
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Answer : The volume of concentrated hydrochloric acid is, 0.25 liters
Explanation :
Using neutralization law,
where,
= molarity of concentrated hydrochloric acid = 12 M = 12 mole/L
= molarity of hydrochloric acid = 6 M = 6 mole/L
= volume of concentrated hydrochloric acid = ?
= volume of hydrochloric acid = 500 ml = 0.5 L
Now put all the given values in the above formula, we get the volume of concentrated hydrochloric acid.
Therefore, the volume of concentrated hydrochloric acid is, 0.25 liters
12.0 * V₁ = 6.0 * 500.0
12.0 V₁ = 3000
V₁ = 3000 / 12.0
V₁ = 250 mL
hope this helps!
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Nitrogen Molecule:
N₂ or :N≡N:
Cyanide Ion:
CN⁻ or [:C≡N:]⁻
Alkynes:
R-C≡C-R
Carbon Monoxide:
CO or :C≡O:
Among given compounds Alkynes belong to a class of unsaturated hydrocarbons. The carbon atom in alkyne is sp hybridized. These unsaturated hydrocarbons have their own characteristic chemical properties.
Final answer:
A compound with a triple bond, like acetylene, is a molecule where three pairs of electrons are shared between two atoms. Acetylene contains a triple bond between its two carbon atoms. These bonds are strong, robust, and render unique properties to the compound.
Explanation:
A compound that contains a triple bond is a molecule in which three pairs of electrons are shared between two atoms, making it a very strong connection. An example of such a compound is acetylene (C2H2), which contains a triple bond between the two carbon atoms. The presence of triple bonds results in substances with unique properties when compared to compounds with only single or double bonds.
The triple bond in acetylene is formed by one sigma bond and two pi bonds. This means that acetylene is a more robust compound because of the strength of the triple bond. Additionally, molecules with triple bonds often have interesting chemical reactivities which make them important in various fields such as organic chemistry or industrial synthesis.
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Answer:
C. The enthalpy of a reaction is the sum of the enthalpies of intermediate reactions.
Explanation:
The heat of any reaction ΔH∘f for a specific reaction is equal to the sum of the heats of reaction for any set of reactions which in sum are equivalent to the overall reaction.