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Vikentia [17]
3 years ago
6

What role do catalysts play in chemical reactions?

Chemistry
1 answer:
Ludmilka [50]3 years ago
5 0
<em>Role of a catalysts in chemical reactions:</em>
<span><em>Catalyst is a substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process.</em></span>

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in their mechanism of action, a difference between lipid-soluble and water-soluble hormones is that _____.
LenKa [72]
<span>In their mechanism of action, a difference between lipid-soluble and water-soluble hormones is that </span>lipid-soluble hormones diffuse into the cell's plasma membrane to access protein receptors, while water-soluble hormones bind to protein receptors on the plasma membrane without diffusion.

Examples of lipid-soluble hormones are steroids. Examples of water-soluble hormones are polypeptides.
4 0
4 years ago
Part C<br> Number of molecules in 8.437x10-2 mol C6H6
N76 [4]

Answer:

There are 5.08\times 10^{22}\ \text{molecules of}\ C_6H_6  

Explanation:

In this problem, we need to find the number of molecules in 8.437\times 10^{-2} mol of C_6H_6.

The molar mass of C_6H_6 is 6\times 12+1\times 6=78\ g/mol

No of moles = mass/molar mass

We can find mass from above formula.

m=n\times M\\\\m=8.437\times 10^{-2}\ mol\times 78\ g/mol\\\\m=6.58\ g

Also,

No of moles = no of molecules/Avogadro number

N=n\times N_A\\\\N=8.437\times 10^{-2}\times 6.023\times 10^{23}\\\\N=5.08\times 10^{22}\ \text{molecules}

Hence, there are 5.08\times 10^{22}\ \text{molecules of}\ C_6H_6  

5 0
3 years ago
How many udders does a cow have
Zinaida [17]
Nice question. A cow has 4 udders 
6 0
3 years ago
A 2.00 m2 tank of a fluid that has a density of 1000 kg/m is draining at a rate of S liters/min. Determine the time for the tank
professor190 [17]

Answer:

the "d" option

Explanation:

 Cómo se pronuncia

To calculate the flow I need the volume and time to comply with the formula:

S = V / t

V = volume

t = time

In this problem I have volume and density as data.

There is no way to calculate the time so the correct answer is the "d" option

4 0
4 years ago
What is the systematic name for the following structure, specifying cis-/trans-?
Andrej [43]

Answer:

cis-3,4-dimethyl-3-hexene

Explanation: since the substituents are on same side, it call cis. Followed by the name

6 0
3 years ago
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