<u>Answer:</u> The boiling point of solution is 100.62°C
<u>Explanation:</u>
Elevation in boiling point is defined as the difference in the boiling point of solution and freezing point of pure solution.
The equation used to calculate elevation in boiling point follows:
![\Delta T_b=\text{Boiling point of solution}-\text{Boiling point of pure solution}](https://tex.z-dn.net/?f=%5CDelta%20T_b%3D%5Ctext%7BBoiling%20point%20of%20solution%7D-%5Ctext%7BBoiling%20point%20of%20pure%20solution%7D)
To calculate the elevation in boiling point, we use the equation:
![\Delta T_b=iK_bm](https://tex.z-dn.net/?f=%5CDelta%20T_b%3DiK_bm)
Or,
![\text{Boiling point of solution}-\text{Boiling point of pure solution}=i\times K_b\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ in grams}}](https://tex.z-dn.net/?f=%5Ctext%7BBoiling%20point%20of%20solution%7D-%5Ctext%7BBoiling%20point%20of%20pure%20solution%7D%3Di%5Ctimes%20K_b%5Ctimes%20%5Cfrac%7Bm_%7Bsolute%7D%5Ctimes%201000%7D%7BM_%7Bsolute%7D%5Ctimes%20W_%7Bsolvent%7D%5Ctext%7B%20in%20grams%7D%7D)
where,
Boiling point of pure water = 100°C
i = Vant hoff factor = 1 (For non-electrolytes)
= molal boiling point elevation constant = 0.512°C/m.g
= Given mass of solute = 23.6 g
= Molar mass of solute = 103.5 g/mol
= Mass of solvent (water) = 188 g
Putting values in above equation, we get:
![\text{Boiling point of solution}-100=1\times 0.512^oC/m\times \frac{23.6\times 1000}{103.5g/mol\times 188}\\\\\text{Boiling point of solution}=100.62^oC](https://tex.z-dn.net/?f=%5Ctext%7BBoiling%20point%20of%20solution%7D-100%3D1%5Ctimes%200.512%5EoC%2Fm%5Ctimes%20%5Cfrac%7B23.6%5Ctimes%201000%7D%7B103.5g%2Fmol%5Ctimes%20188%7D%5C%5C%5C%5C%5Ctext%7BBoiling%20point%20of%20solution%7D%3D100.62%5EoC)
Hence, the boiling point of solution is 100.62°C
I’m sorry i’m not smart lol , i’m tryna post a question on my profile and i need to answer a question
I would believe that the answer is B. Neutrons
Electrons don't have any mass
Charges and atoms don't even make sense in this question
Answer:
The correct answer is 16.8 g (option C)
Explanation:
Step 1: Data given
9.78 grams + 7.0 grams
Rule significant numbers say:
⇒ Non-zero digits are always significant.
⇒ Any zeros between two significant digits are significant.
⇒ A final zero or trailing zeros in the decimal portion ONLY are significant.
For addition and subtraction, look at the places to the decimal point. Add or subtract in the normal way, then round the answer to the LEAST number of places to the decimal point of any number in the problem.
9.78 g+ 7.0 g = 16.78 grams
Significant numbers = 1 decimal
16.78 ⇒ 16.8
The correct answer is 16.8 g (option C)
D. the total number of protons and neutrons in a atom of the element.