The grams are in 0.0150 moles of caffeine C8H10N4O2
mass = moles of C8H10N4O2 x molar mass of C8H10N4O2
= 194g/mol x 0.0150mol = 2.91 grams
there is 2.94 grams in 0.01150 of caffeine
It's sunny in new york, but it is cool, we will expect to find lizard under a rock or in a hole in the ground.
<h3>Why lizards are not comfortable in cold?</h3>
Lizards are not comfortable in the cold season as they are cold blooded animal, so their body will gets slow in the winter season.
During the winter season or in the cool weather, lizards will go to the places where they faces less cooling. And these places be like inside the rocks, under a hole, under the ground, in the trunks of trees, etc.
Hence, options (1) and (4) are correct.
To know more about lizards, visit the below link:
brainly.com/question/407800
B. It has the highest pH so it is the most basic, thus containing the highest concentration of hydroxide ions.
Let's look at the molar weight of the answers:
NO is 30 g/mol
NO2 is 46
N2O is 44
N2O4 is 124
<span>We have the grams of the product, so we need the moles in order to calculate the molar weight. We us PV=nRT for this, assuming standard temperature and pressure. </span>
You were given the liters (.120L)
Std pressure is 1 atmosphere
You're looking for n, the number of moles
<span>Temp is 293.15 kelvin, thats standard </span>
And r is the gas constant in liters-atm per mol kelvin
(.120 liters)(1atm)=n(293.15K)(.08206)
Solving for n is .0049883835 mol
<span>.23g divided by .0049883 mol is about 46g/mol. You're answer is B I think, NO2
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Answer:
only 3
Explanation:
probably 4 too, I'm not sure