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3 years ago

Passive transport involves movement of substances from?

2 answers:

8 0

<span>The correct answer is " passive transport involves movement of substances down their concentration gradient. This is the correct answer because passive transport requires no membrane transporter that would use ATP for energy which would be "active transport". Without the use of an ATP driven transporter, the only way molecules can travel between membranes is by going from an area of high concentration, through the passive transporter, to an area of low concentration.</span>

Gnesinka [82]3 years ago

7 0

Osmosis is the answer babe.

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Use the collision theory to discuss how temp., concentration and surface area affect the rate of a chemical reaction?

pogonyaev

The collision theory explains how chemical reactions are made and different reactions have different reaction rates

Hope it helps.

4 0

3 years ago

If a candle is burning in an open room, which reactant is in excess?

LenKa [72]

Answer:

Explanation:

3 0

3 years ago

A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at 95.0°C if Ea =

never [62]

Answer:

k ≈ 9,56x10³ s⁻¹

Explanation:

It is possible to solve this question using Arrhenius formula:

$ln\frac{k2}{k1} = \frac{-Ea}{R} (\frac{1}{T2} -\frac{1}{T1} )$

Where:

k1: 1,35x10² s⁻¹

T1: 25,0°C + 273,15 = 298,15K

Ea = 55,5 kJ/mol

R = 8,314472x10⁻³ kJ/molK

k2 : ???

T2: 95,0°C+ 273,15K = 368,15K

Solving:

$ln\frac{k2}{k1} = 4,257$

$\frac{k2}{k1} = 70,593$

${k2} = 9,53x10^3 s^{-1}$

I hope it helps!

5 0

3 years ago

How does a Camel prevent the loss of water from their body?

Schach [20]

Camels lose less water through their urine and feces than many other mammals. Their kidneys concentrate water heavily, leading to salty urine. The intestines also reabsorb water from intestinal material as it is digested, so dry feces are produced.

7 0

3 years ago

I need help ASAP! How many reactants and products are in each element according to the chemical equation above.

Len [333]

Answer:

O 4

C 1

1 sodium

3 H

Products

1 sodium

3 H

4 O

1 C

Explanation:

7 0

3 years ago