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scoundrel [369]
3 years ago
7

Aspirin has the formula C9H8O4 If it is decomposed, a product it could never produce is:

Chemistry
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:

E) HBr

Explanation:

Because Bromine (Br) isn't part of the original formula for Apirin. (I answered this based on the assumption that the letter "A" in option C was a typo of sorts, since there is no element with a chemical symbol of just "A" that I am aware of. If this is incorrect, then I apologize.)

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A student needs to determine the volume occupied by a gas in a 125 mL flask using the experimental setup described in the proced
Yuki888 [10]

Answer:

It would appear that the H2 gas is collected in a stoppered flask. Therefore, the volume of the gas is 138 mL minus the 5 mL occupied by the HCl, or 133 mL.

Explanation:

6 0
3 years ago
What is the mass of 0.60 moles of Al?
nikitadnepr [17]

It helps to map out how you will navigate through your unit analysis problem before setting it up.  

You are given moles and need grams.  What can be used as a conversion factor from moles to grams?  Molar mass.  We are working with aluminum, so we will need the molar mass of aluminum.  My Periodic Table tells me the molar mass of aluminum is approximately 27 g/mol.  Now we are ready to set up the unit analysis.

0.60molAl(\frac{27gAl}{1molAl} )=16.2 gAl

Moles must go on the bottom so that they cancel.  Notice how our number of significant figures is 2, so the answer must round to 16 g Al.

<h3>Answer:</h3>

16 grams

5 0
3 years ago
What is flame emission spectroscopy
zmey [24]
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3 0
3 years ago
Given the reaction: 2H₂ + O₂ → 2H₂O The total number of grams of O₂ needed to produce 54 grams of water is _________.
Vedmedyk [2.9K]

Answer : The mass of O_2 needed are, 48 grams.

Explanation :

First we have to calculate the moles of H_2O

\text{Moles of }H_2O=\frac{\text{Given mass }H_2O}{\text{Molar mass }H_2O}=\frac{54g}{18g/mol}=3mol

Now we have to calculate the moles of O_2

The given balanced chemical reaction is:

2H_2+O_2\rightarrow 2H_2O

From the reaction, we conclude that

As, 2 mole of H_2O produces from 1 mole of O_2

So, 3 mole of H_2O produces from \frac{3}{2}=1.5 mole of O_2

Now we have to calculate the mass of O_2

\text{ Mass of }O_2=\text{ Moles of }O_2\times \text{ Molar mass of }O_2

Molar mass of O_2 = 32 g/mole

\text{ Mass of }O_2=(1.5moles)\times (32g/mole)=48g

Therefore, the mass of O_2 needed are, 48 grams.

4 0
3 years ago
Which role of water is significant for most living things in a biological system?a. It prevents many life processes from occurri
Sedaia [141]
I am pretty sure the correct answer is C.  Water has large heat capacity meaning it can absorb a lot of energy before changing temperature.  That helps the body regulate heat since it can be exposed to different environments and experience small temperature changes.

I hope this helps.  Let me know if anything is unclear.
6 0
3 years ago
Read 2 more answers
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