Starch cannot diffuse across the membrane because starch molecules are too large to fit through the pores in the dialysis tubing, whereas iodine is a smaller molecule and therefore can diffuse across.
Answer:
The answer is 117 grams.
Explanation:
Na + Cl → NaCl
The mass of Na is 23 grams and Cl is 35.5 grams
The mass of NaCl will be (23+35.5) = 58.5 grams.
But we used 46 grams of Na and 35.5 grams of Cl
So the mass of Nacl will be (46+35.5) = 117 grams.
Answer:
To support or refute a hypothesis, the scientist must collect data. A great deal of logic and effort goes into designing tests to collect data so the data can answer scientific questions. Data is usually collected by experiment or observation. ... Written descriptions are qualitative data based on observations.