The answer is true. It is the last star.
Answer:
They want to escape from the fury of a hurricane.
Explanation:
Your welcomeeeeeeeeeeeee
The osmotic pressure at 65 °C of an aqueous solution containing 2.50 g of sucrose is 0.988 atm
<h3>How to determine the mole of sucrose </h3>
- Mass of sucrose = 2.5 g
- Molar mass of sucrose = 342 g/mol
- Mole of sucrose =?
Mole = mass /molar mass
Mole of sucrose = 2.5 / 342
Mole of sucrose = 0.0073 mole
<h3>How to determine the molarity of sucrose </h3>
- Mole of sucrose = 0.0073 mole
- Volume = 205 mL = 205 / 1000 = 0.205 L
Molarity =?
Molarity = mole / Volume
Molarity of sucrose = 0.0073 / 0.205
Molarity of sucrose = 0.0356 M
<h3>How to determine the osmotic pressure </h3>
- Molarity (M) = 0.0356 M
- Temperature (T) = 65 °C = 65 + 273 = 338 K
- Gas constant (R) = 0.0821 atm.L/Kmol
- Van't Hoff factor (i) = 1 (sucrose is non-electrolyte)
- Osmotic pressure (π) =?
π = iMRT
π = 1 × 0.0356 × 0.0821 × 338
π = 0.988 atm
Learn more about Osmotic pressure:
brainly.com/question/5925156
No it doesn’t change in size and shape but the mass does change.
Answer:
7
Explanation:
The 13 in C-13 shows the relative atomic mass of the isotope. the number of protons in carbon stay the same, while the number of neutrons changes. To find the number of neutrons in an atom, you must subtract the Atomic Mass Number with the Atomic Number. 13-6 = 7
