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2 years ago

7

Help please with question 2bii The one that starts with calculate the average ....

1 answer:

Anna11 [10]2 years ago

4 0

Answer:

add text fully or atleast add book name edition . solution is in picture. chk pictures ignore b part

Explanation:

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A scientist heats a flexible container full of neon gas. What will most likely happen to the container as the gas absorbs heat?

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It will most likely get hotter and hotter and eventually exsplod from all the presure.

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2 years ago

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Round the following off to required number of significant figures.

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The loudness of a sound is determined by the __________, or height, of the sound wave.

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3 years ago

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A 0.89 m aqueous solution of an ionic compound with the formula mx has a freezing point of -3.0 ∘c . van't hoff factor?

BigorU [14]

Answer is: V<span>an't Hoff factor (i) for this solution is 1,81.
Change in freezing point from pure solvent to solution: ΔT =i · Kf · b.
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b - molality, moles of solute per kilogram of solvent.
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3 years ago

A car moving with an initial speed v collides with a second stationary car that is one-half as massive. After the collision the

Mashutka [201]

Answer:

4v/3

Explanation:

Assume elastic collision by the law of momentum conservation:

$m_1v = m_1v_1 + m_2v_2$

where v is the original speed of car 1, v1 is the final speed of car 1 and v2 is final speed of car 2. m1 and m2 are masses of car 1 and car 2, respectively

Substitute $m_2 = m_1/2 \& v_1 = v/3$

$m_1v = \frac{m_1v}{3} + \frac{m_1v_2}{2}$

Divide both side by $m_1$ , then multiply by 6 we have

$6v = 2v + 3v_2$

$3v_2 = 4v$

$v_2 = \frac{4v}{3}$

So the final speed of the second car is 4/3 of the first car original speed

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2 years ago