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Helga [31]
3 years ago
11

Identify the phase changes in the figure that are labeled a

Chemistry
1 answer:
BigorU [14]3 years ago
6 0
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The law of definite proportions helps us explain why water will always        A. break down into gas when heated.   B. be releas
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... liquid water are two different forms of the same chemical substance, water. A chemical substance is a form of matter that has constant chemical ...
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3 years ago
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Which statements below are an appropriate hypothesis in response to this question? Check all that apply. If a substance changes
Nostrana [21]

Answer:

If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.

If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.

Explanation:

So in shorter words its options 2 and 3

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2 years ago
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What is the charge associated with each side of the HCl molecule?
Alexandra [31]

HCl is a polar molecule with the hydrogen part being partial positive while the chlorine end being partial negative. This is because hydrogen has an electronegativity of 2.1, and chlorine has an electronegativity of 3.0. This means that chlorine attracted most of the electron cloud of molecule hence is the negative dipole, The dipole moment of HCl is 1.08 D (debyes). A Debye is equal to 3.34 x 10-30 coulomb-meters (C-m). The charge of each molecule is o.176+ for H and 0.176- for the Cl

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3 years ago
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7.895 g + 3.4 g round to the correct number significant figures
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Answer:

11.3 g

Explanation:

7.895 + 3.4 = 11.295

When rounded to correct number of significant figures --> 11.3

There are 3 significant figures in 11.3

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Task B: Use the following maps to complete the questions:
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