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2 years ago

Which statement best explains why heating a liquid affects its viscosity?

2 answers:

4 0

The statement that best explains why heating a liquid affects its viscosity is that "The molecules move faster at higher temperatures and overcome attractions more easily.". Remember that viscosity is a physical property of the fluids that measure the resistance (opposition) to flow and it, generally decreases, as the temperature increases and the intermolecular force decrease.

AleksAgata [21]2 years ago

4 0

Answer:

aka: A

Explanation:

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What are reasons standardizing conditions in which chemist describe matter?

ExtremeBDS [4]

Matter is the basic unit of every thing in the world, whether living or nonliving. So, it is logical to set definitions and postulates because these could pave way to other complexities of science. It is the foundation of science. That is why theories and laws are formulated for matter such as: Kinetic Theory of Matter, Dalton's Atomic Model, Newton's Law of Motion, Conservation Laws and many more.

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2 years ago

What is the mass of 3.04×10^-4 mol of baking soda, NaHCO3?

Zigmanuir [339]

Answer:

0.025536g

Explanation:

no. of mole = mass/Mr

mass = Mr × no. of mole

= [23 + 1 + 12 + 3(16)] × 3.04×10^-4

= 0.025536g

= 0.0255g (3 significant figures)

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3 years ago

A pure compound is composed of? pls Answer this directly

brilliants [131]

A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded.

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2 years ago

For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. The reaction is endothermic. What do yo

jeyben [28]

Answer:

The correct answer is : 'the concatenation of NO will increase'.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

If the temperature is increased, so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where increase in temperature occurs.

$2NOBr(g)\rightleftharpoons 2NO(g) + Br_2(g)$

As, this is an endothermic reaction, increasing temperature will add more heat to the system which move equilibrium in the forward reaction with decrease in temperature. Hence, the equilibrium will shift in the right direction.

So, the concatenation of NO will increase.

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Answer:

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Explanation:

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2 years ago