3 years ago

What does towels represents on earth?

Chemistry

1 answer:

Kamila [148]3 years ago

6 0

The build up sediment of the sea bottom

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A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the bike and the rider is 85 kg. Find the kinetic ener

krek1111 [17]

KE=3070.625 J

Height = 3.686 m

<h3>Further explanation</h3>

mass of bike+rider=85 kg

velocity = 8.5 m/s

$\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 85\times 8.5^2\\\\KE=3070.625~J$

Conservation of energy :

(KE+PE)₁ (downhill) = (KE+PE)₂ (up the hill)

PE₁=0⇒h=0

KE₂=0⇒v=0(stop), so equation becomes :

KE₁=PE₂

$\tt KE_1=3070.625\\\\KE_1=mgh_2\\\\3070.625=85\times 9.8\times h\Rightarrow h=3.686~m$

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3 years ago

At 17 °C, a 0.80 mole sample of a gas exerts a pressure of 1.2 atm. What is the volume of the container?

lapo4ka [179]

Answer:

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Explanation:

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Look at the image shown. What does this image represent?

JulijaS [17]

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A sample of liquid has a mass of 24 grams and a volume of 16 mL what is the density

viktelen [127]

Answer:

<h3>The answer is 1.5 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question we have

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How many aluminum atoms are in 2.26 g of aluminum?

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Aluminum atoms are in 3.78 g of aluminum

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3 years ago