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2 years ago

A 2.0-g piece of Mg reacts with HNO3. Which conditions would produce the GREATEST reaction rate

Physics

1 answer:

qwelly [4]2 years ago

3 0

Explanation:

Reaction rates is a measure of the speed of a chemical reaction.

Mg + HNO₃ → Mg(NO₃)₂ + N₂O + H₂O

The following will increase the reaction rate of this reaction:

The nature of the reactants: if the solid magnesium is grounded into powder this will increase the rate of the chemical reaction. The larger the surface area the faster a reaction becomes.
Increasing the concentration of the acidic HNO₃ . The rate of a reaction is directly proportional to the concentration of the reactants.
Increase in temperature of the reaction. An increase in temperature causes the kinetic energy of reacting particles.

Learn more:

Chemical reaction rate brainly.com/question/6281756

#learnwithBrainly

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An ice dancer with her arms stretched out starts into a spin with an angular velocity of 1.00 rad/s. Her moment of inertia with

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Answer:

A) 0.957 J

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2 years ago

Before you start taking measurements though, we’ll first make sure you understand the underlying concepts involved. By what meth

Svetradugi [14.3K]

Answer:

If they are metallic spheres they are connected to earth and a charged body approaches

non- metallic (insulating) spheres in this case are charged by rubbing

Explanation:

For fillers, there are two fundamental methods, depending on the type of material.

If they are metallic spheres, they are connected to earth and a charged body approaches, this induces a charge of opposite sign and of equal magnitude, then it removes the contact to earth and the sphere is charged.

If the non- metallic (insulating) spheres in this case are charged by rubbing with some material or touching with another charged material, in this case the sphere takes half the charge and when separated each sphere has half the charge and with equal sign.

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2 years ago

In the lab activity, you will examine sound waves as they are emitted from a moving source. Predict what will happen to the soun

irina1246 [14]

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2 years ago

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A 2200 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push. With the engine at full pow

leonid [27]

Answer:

a) The maximum possible acceleration the truck can give the SUV is 7.5 meters per second squared

b) The force of the SUV's bumper on the truck's bumper is 18000 newtons

Explanation:

a) By Newton's second law we can find the relation between force and acceleration of the SUV:

$F=ma$

With F the maximum force the truck applies to the SUV, m the mass of the SUV and a the acceleration of the SUV; solving for a:

$a=\frac{F}{m}=\frac{18000}{2400}\approx7.5\,\frac{m}{s^{2}}$

b) Because at this acceleration the truck's bumper makes a force of 18000 N on the SUV’s bumper by Third Newton’s law the force of the SUV’s bumper on the truck’s bumper is 18000 N too because they are action-reaction force pairs.

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2 years ago

Suppose 1 kg of Hydrogen is converted into Helium. a) What is the mass of the He produced? b) How much energy is released in thi

morpeh [17]

Answer:

a) m = 993 g

b) E = 6.50 × 10¹⁴ J

Explanation:

atomic mass of hydrogen = 1.00794

4 hydrogen atom will make a helium atom = 4 × 1.00794 = 4.03176

we know atomic mass of helium = 4.002602

difference in the atomic mass of helium = 4.03176-4.002602 = 0.029158

fraction of mass lost = $\dfrac{0.029158}{4.03176}$ = 0.00723

loss of mass for 1000 g = 1000 × 0.00723 = 7.23

a) mass of helium produced = 1000-7.23 = 993 g (approx.)

b) energy released in the process

E = m c²

E = 0.00723 × (3× 10⁸)²

E = 6.50 × 10¹⁴ J

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2 years ago

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