Answer:
<em>Density = 1.74 gm/mL</em>
Explanation:
Given that:
Mass of piece of Magnesium = 4.80 grams
The volume displaced by this piece = 2.76mL
Let us learn about a property:
Volume of water displaced by a substance when immersed in the water is equal to the Volume of the substance itself.
So, volume of the piece of Magnesium = 2.76 mL
To find:
Density of magnesium = ?
Solution:
Let us have a look at the formula for Density of a Substance:
Density of a substance is given as the ratio of mass of substance and the volume of that mass of substance.
i.e.
Putting the given values:
So, the answer is:
Density of Magnesium = <em>1.74 gm/mL</em>
Answer:
the answer of your question is below:
Explanation:
decay
The answer is true due to the saponification of the fatty substances on the surface of the skin.
Answer:Nitrogen dioxide reacts with the sunlight and combines with particles from smoke and soot to form industrial smog. is true
Explanation:
From one mole of MnWO4, we get one mole of tungsten. Therefore 10.88 mol of tungsten will be obtained from 10.88 mol of MnWO4.
Molar mass MnWO4 = 54.94 + 183.84 + 4(16.0) = 302.78 g.mol-1
Therefore mass of MnWO4 required = mole x molar mass = 10.88 mol x 302.78 g.mol-1 = 3294.24 grams
And, 3294.24 grams = > 3.29424 kg
On rounding off to two significant digits, we get 3.3 kg.
Rounds a number to 3 significant digits the same way it rounds to 3 decimal places. Count up to 3 digits from the first non-zero digit. Then round off the last digit. Pad the remaining digits to the right of the decimal point with zeros. 0.0560 has 3 significant digits. In accordance with scientific conventions, leading zeros in decimal numbers are not treated as significant. So exclude 0.0 from 0.0560.
Learn more about Significant digits here:-brainly.com/question/28052368
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