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GenaCL600 [577]

3 years ago

9

What is semipermeable membrane?

1 answer:

Nutka1998 [239]3 years ago

8 0

Answer:

A Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.

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As a roller coaster is going UP the first hill, what is happening to the KE?

SpyIntel [72]

Explanation:

It should be decreasing, and the potential energy increasing, since Law of Conversation of Energy, right?

Also, if you think about what happens when it goes down, it loses potential and gains kinetic, so maybe the opposite should happen when it goes up.

7 0

3 years ago

Read 2 more answers

Drinking energy drinks makes people more aggressive.

ch4aika [34]

Outcome (dependent) variable-drinking energy drinks

Test (independent) variable- more aggressive

7 0

3 years ago

Is tap water a compound, a homogenous mixture, or a heterogeneous mixture?

goldenfox [79]

It is a homogenous mixture. It is clear and does not seperate

4 0

4 years ago

The average kinetic energy of 1 mole of a gas at -32 degrees Celsius is:

Effectus [21]

<h2>Answer: $3.01\times 10^{3}J$ </h2>

Explanation:

Let $T$ be the temperature in kelvin.

Let $KE$ be the average kinetic energy.

Let $n$ be the number of moles.

Let $R$ be the universal gas constant.

As we know,

$KE=\dfrac{3}{2}nRT$

Given,

$n=1\\T=273-32=241K$

we know that $R=8.314JK^{-1}mol^{-1}$

So, $KE=\frac{3}{2} \times 1\times 8.314\times 241=3005.5J$ = $3.01\times 10^{3}J$

8 0

3 years ago

Suppose you need 7.0 m of Grade 70 tow chain, which has a diameter of 38" and weighs , 2.16/kgm to tow a car. How would you calc

STatiana [176]

Answer : The mass of 7.0 m chain is, 15.12 kg

Explanation :

As we are given that,

The weight of the chain per unit length = 2.16 kg/m

Now we have to determine the mass of chain for 7.0 m length.

As, the mass of 1 m length of chain = 2.16 kg

So, the mass of 7.0 m length of chain = $\frac{7.0m}{1m}\times 2.16kg$

= 15.12 kg

Therefore, the mass of 7.0 m chain is, 15.12 kg

3 0

3 years ago