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4 years ago

What's the differentiating characteristic between an element and a compound

Physics

2 answers:

IRISSAK [1]4 years ago

8 0

Answer:

an element is a pure substance whereas a compound is a mixture of two or more elements.

umka21 [38]4 years ago

6 0

The basic difference between a compound and an element is its constituents, in which the element is a pure individual chemical substance which has similar atom and compound is a mixture of two or more elements bounded chemically.

Explanation:

Elements:

Elements are pure homogenous substance.
Elements have similar atoms grouped together.
Element is being represented with the chemical scientific symbol.

Compounds:

Compound are heterogeneous mixture of elements.
Compound has different atoms which is combined in fixed ratio.
Compound is given by chemical formula.

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2 years ago

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FromTheMoon [43]

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3 years ago

A seashell is suspended in the air at rest by two strands of spider silk. Each strand of silk makes an angle of 75 degrees above

Ksenya-84 [330]

The mass of the seashell suspended by the two strands of spider silk is 0.28 kg.

The given parameters:

Tension on each strand of silk, T = 1.42 N
Angle of inclination of each strand, θ = 75⁰

The mass of the seashell at equilibrium is calculated by applying Newton's second law of motion;

$\Sigma F = 0\\\\T_1 sin(\theta) + T_2 sin(\theta) - W = 0$

where;

W is the weight of the seashell

The weight of the seashell is calculated as;

$1.42 \times sin(75) \ + \ 1.42 \times sin(75) \ - W = 0\\\\2.743 - W = 0\\\\W = 2.743 \ N$

The mass of the seashell is calculated as follows;

$W = mg\\\\m = \frac{W}{g} \\\\m = \frac{2.743}{9.8} \\\\m = 0.28 \ kg$

Thus, the mass of the seashell suspended by the two strands of spider silk is 0.28 kg.

Learn more about equilibrium forces here: brainly.com/question/8045102

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3 years ago