A solution is when a solute dissolves in a solvent. ( I don’t understand the rest of the question)
It is c. Earth’s oceans
bc water is necessary to sustaining life on Earth, and helps tie together the Earth's ... The ocean plays a key role in this vital cycle of water.
When we assume that our solvent is water with total weight 100 g:
so we need to get the mass of K2SO3:
mass of K2SO3 = moles K2SO3 * Mw of K2SO3
now we need to get first the Mw of K2SO3 = 2*39 + 1*32 + 3*16 = 158 g/mol
by substitution:
∴ mass of K2SO3 = 0.0328 moles * 158 g/mol = 5.18 g
∴the mass of water = 100 g - 5.18 g = 94.8 g
∴ moles of water = mass of water / Mw of water
= 94.8 g / 18 g/mol
= 5.2 moles
∴the total moles = moles of water + moles of K2SO3
= 5.2 + 0.0328 = 5.266 moles
∴ the weight/weight % of K2SO3 = moles of K2SO3 / total moles*100
= 0.0325 moles / 5.266 moles *100
= 0.0062 *100
= 0.62 %
The sugar produced by photosynthesis can be converted into the sugar glucose
Answer:
262.5 mL
Explanation:
21% of 1.25 L volume is methanol, so the amount of methanol is,
0.21 × 1250 mL = 262.5 mL