A student measures the heights of four bean plants grown in different types of soil. The amount of water given to each plant is
1 answer:
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Answer : The density of the block is estimated to be, .
Explanation :
Density of the water,
As we know that,
Buoyant force =
where,
g = gravitational acceleration
volume of the block = v
density of the block =
Weight of the Block = Buoyant force exerted by water
Thus, the density of the block is estimated to be, .
Answer:
Please, see attached two figures:
- The first figure shows the solutility curves for several soluts in water, which is needed to answer the question.
- The second figure shows the reading of the solutiblity of NH₄Cl at a temperature of 60°C.
- Answer: <u>5.5g</u>
Explanation:
The red arrow on the second attachement shows how you must go vertically from the temperature of 60ºC on the horizontal axis, up to intersecting curve for the <em>solubility</em> of <em>NH₄Cl.</em>
From there, you must move horizontally to the left (green arrow) to reach the vertical axis and read the solubility: the reading is about in the middle of the marks for 50 and 60 grams of solute per 100 grams of water: that is 55 grams of grams of solute per 100 grams of water.
Assuming density 1.0 g/mol for water, 10 mL of water is:
Thus, the solutibily is:
