Answer:
None of these cause the correct answer is 9/-5
There are 1.65 × 10^(-7) g S in 3.01 × 10^15 atoms S.
<em>Step 1</em>. Use Avogadro’s number to convert <em>atoms of S to moles of S</em>
Moles of S = 3.01 × 10^15 atoms S × (1 mol S/6.022 × 10^23 atoms S)
= 5.148 × 10^(-9) mol S
<em>Step 2</em>. Use the molar mass of S to convert <em>moles of S to grams of S
</em>
Mass of S = 5.148 × 10^(-9) mol S × (32.06 g S/1 mol S) = 1.65 × 10^(-7) g S
Answer:
The correct answer is:
C. Rising steam from the cup of cocoa.
Rising steam from the cup of cocoa is the part of this scenario that convection can be best observed.
Explanation:
Salicylic acid has a benzenic ring, one carboxylic functional group and one phenolic hydroxilic functional group.
Explanation:
Salicylic acid has the molecular formula C₇H₆O₃ and the chemical diagram is found in the attached picture.
On the benzenic ring it have two functional groups namely the carboxylic group (-COOH) and the phenolic hydroxilic group (-OH).
Salicylic acid is a precursor in synthesis of the aspirin (acetylsalicylic acid).
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Salicylic acid
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Answer:
8.73
Explanation:
when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!
also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!