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2 years ago

8

How does lithium react with cold water?

2 answers:

Tomtit [17]2 years ago

5 0

Lithium metals reacts slowly with water to form a colourless solution of lithiums hydroxide (LiOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic, but the reaction is slower than that of sodium (immediately below lithium in the periodic table)

nadezda [96]2 years ago

4 0

Lithium reacts intensely with water, forming lithium hydroxide and highly combustible hydrogen.

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3 years ago

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What material parameters determine resistivity?

sleet_krkn [62]

Answer:

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Explanation:

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2 years ago

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Travka [436]

Answer;

The mass value for the above kinetic energy equation is 400.0000 kg. This is equal to:

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3 years ago

A cylinder of mass 14.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed o

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Answer:

a) 567J

b) 283.5J

c)850.5J

Explanation:

The expression for the translational kinetic energy is,

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Substitute,

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(B)

The expression for the rotational kinetic energy is,

$E_R = \frac{1}{2} Iw^2$

The expression for the moment of inertia of the cylinder is,

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substitute

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and vr for w

in equation for rotational kinetic energy as follows:

$E_R = (\frac{1}{2}) (\frac{1}{2} mr^2)(\frac{v}{r} )^2$

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The rotational kinetic energy of the center of mass is 283.5J

(c)

The expression for the total energy is,

$E = E_r + E_R\\\\$

substitute 567J for E(r) and 283.5J for E(R)

$E = 567J + 283.5\\= 850.5J$

The total energy of the cylinder is 850.5J

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Answer:

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