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Oksanka [162]
3 years ago
9

Matter that is composed of two or more different elements chemically combined in a fixed proportion is classified as...

Chemistry
1 answer:
Lilit [14]3 years ago
4 0
It's called a compound because different elements are held together by a chemical bond.
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Meera is an eleven-year-old student in India. She knows that her country is a part
Feliz [49]

Answer:

Subcontinent

Explanation:

Because the Himalayan mountains seperate India from the rest of Asia, it is a subcontinent(subcontinent is a distinguishable part of a continent) and India has many geographical features of a continent, but it is not big enough to be one...which is another reason why its called subcontinent.

5 0
4 years ago
Why is CCl4 classified as a non polar molecule?
Lerok [7]
<span>CCl4 is a non polar molecule because though each of the C-Cl bond is polar but the resultant of all these dipole moments is zero as its a symmetrical tetrahedral shape molecule ,and their is a cancellation of dipole moment in each pair.</span>
6 0
3 years ago
How many moles are 5.42 x 1026 atoms of calcium?
MrRissso [65]

Answer: 900.33moles

Explanation:Please see attachment for explanation

7 0
3 years ago
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Which of the following is not found in a lipid?
Simora [160]
Fatty acids are not found in lipids


8 0
3 years ago
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32. A sample of potassium is composed of 23% K-39, 48% K-40 and the remainder K-41. Calculate the average mass
mario62 [17]

Answer:

40.06 amu.

Explanation:

From the question given above, the following data were obtained:

Isotope A (K-39)

Mass of A = 39 amu

Abundance of A = 23%

Isotope B (K-40)

Mass of B = 40 amu

Abundance of B = 48%

Isotope C (K-41)

Mass of C = 41 amu

Abundance of C = 100 – (23 + 48)

Abundance of C = 100 – 71

Abundance of C = 29%

Average mass =?

Average mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

= [(39 × 23)/100] + [(40 × 48)/100] + [(41 × 29)/100]

= 8.97 + 19.2 + 11.89

= 40.06 amu

Thus, the average mass of potassium is 40.06 amu

7 0
3 years ago
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