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bekas [8.4K]
3 years ago
14

In the periodic table, the elements that are adjacent to the "stair step" are called _____. actinide series nonmetals metalloids

alkali metals
Chemistry
1 answer:
yawa3891 [41]3 years ago
5 0

Answer:-

Metalloids

Explanation:-

The stair step line is a line in the periodic table that divides the metals on one side and the non metals on the other side. So the elements which lie on the stair step line must have properties in between those exhibited by the metals and those by the non metals.

Such elements we know are called metalloids. Thus In the periodic table, the elements that are adjacent to the "stair step" are called metalloids.

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graduated cylinder is filled with water to a volume of 6.2 ML. an irregular shaped plastic object weighing 1.2 g is placed in th
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Answer:

A. Density of object = 0.86 g/mL

B. The object will float in the water.

Explanation:

The following data were obtained from the question:

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Volume of water + Object = 7.59 mL

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Volume of water = 6.2 mL

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Volume of object = 1.39 mL

Therefore, the volume of the object is 1.39 mL

A. Determination of the density of the object.

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Volume (V) of object = 1.39 mL

Density (D) of object =?

Density = mass /volume

Density = 1.2/1.39

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B. Determination of whether the object will float or sink.

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Density of water = 1 g/mL

From the above, we can see that the density of water is greater than that of the object. This implies that the object is lighter than water. Therefore, the object will float in the water.

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Please help thank you (15 points)
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Answer:

C.

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