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Allisa [31]
2 years ago
13

If a molecule diffusing through extracellular fluid travels 1 mm in 1 sec, how long will it take that molecule to diffuse 1 cm?

Chemistry
1 answer:
stealth61 [152]2 years ago
5 0
To determine the time, we can simply do dimensional analysis from the given values. We are given the distance the fluid travels per sec and we are given the required distance to travel. Therefore, we simply divide the required distance with the rate given. It is important to take note with the units. 

t = .01 m / .001 m/s = 10 s

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How hot, in degrees Celsius, would the air inside the balloon have to get in order for the balloon to lift off the ground? Assum
SVETLANKA909090 [29]

Answer:

The temperature in degress Celsius is 52.25°C

Explanation:

According the equation:

V(\rho _{a}  -\rho _{t})g=mg\\\rho _{a}  -\rho _{t}=\frac{n}{V} =\frac{340}{2950} =0.115kg/m^{3}

\rho _{t}=\rho _{a}  -0.115=1.2-0.115=1.085kg/m^{3}

The temperature is:

T=\frac{P}{\rho _{t} R} =\frac{1.013x10^{5} }{1.085*287.05} =325.25K=52.25°C

3 0
3 years ago
Imagine that you have a piece of Styrofoam. Suppose you squeezed it hard enough to change its shape. Briefly describe how this c
AleksAgata [21]
Its mass would stay the same, it’s volume would become smaller, and it would become more dense.
6 0
3 years ago
HURRY I WILL GIVE YOU BRAINLIEST
Amiraneli [1.4K]

dim? im not so fluent in this but i did research yesterday

6 0
3 years ago
The basic principle in balancing a chemical equation is to ______. hints
Natalija [7]
Answer:  obey the "law of conservation of mass".
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5 0
3 years ago
Read 2 more answers
Given the following equation: 2K + Cl2 -> 2KCl How many grams of KCl is produced from 4.00 g of K and excess Cl2?
Thepotemich [5.8K]

Answer:

42.65g

Explanation:

Given parameters:

Mass of K = 4g

Unknown: Mass of KCl

Solution:

  Complete equation of the reaction:

              2K + Cl₂ → 2KCl

To solve this problem, we know that the reactant in short supply is potassium K and this dictates the amount of products that would be formed. The chlorine gas is in excess and we can't use it to determine the amount of product that would form.

Now, we work from the known to the unknown. Since we know the mass of K given in the reaction, we can simply find the molar relationship between the reacting potassium and the product. We simply convert the mass to mole and compare to the product. From there we can find the mass of KCl that would be produced.

Calculating number of moles of K

      Number of moles = \frac{mass}{molar mass}

        Number of moles of K =  \frac{4}{39} = 0.103mol

From the given reaction equation:

   2 moles of K will produce 2 moles of KCl

 Therefore 0.103mol of K will produce 0.103mol of KCl

To find the mass of KCl produced,

   Mass of KCl = number of moles of KCl x molar mass

Molar mass of KCl = 39 + 35.5 = 74.5gmol⁻¹

Mass of KCl = 0.103 x 74.5 = 42.65g

4 0
3 years ago
Read 2 more answers
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