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3 years ago

Which state of matter undergoes changes in volume most easily

Chemistry

2 answers:

AlladinOne [14]3 years ago

3 0

Solid should be the anwser

morpeh [17]3 years ago

3 0

Solid is the correct answer

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Is distilled water ionically bonded

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What is a group of millions to billions of stars, objects that orbit those stars, gases, and dust?

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Galaxy

Explanation:

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Calculate the percent yield of a reaction where a student collected 16.8 grams of product and was expecting to collect 49.7 gram

masya89 [10]

Answer:

$\boxed{\text{33.8 \%}}$

Explanation:

$\text{\% yield} = \dfrac{\text{actual yield}}{\text {theoretical yield}} \times\text{100 \%}$

Data:

Actual yield = 16.8 g

Theoretical yield = 49.7 g

Calculation:

$\text{\% yield} = \dfrac{\text{16.8 g}}{\text {49.7 g}} \times\text{100 \%} = \boxed{\textbf{33.8 \%}}$

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3 years ago

Which material does not melt at any temperature?

lord [1]

Answer: Option (c) is the correct answer.

Explanation:

Wood is a mixture of different substances. Primarily it consists of cellulose, lignin, water etc.

When we heat wood then all these substance oxidize into the atmosphere even before they could melt.

Whereas iron, sodium chloride and ethanol all are the substances which can melt at any temperature.

Thus, we can conclude that out of the given options, wood, a mixture of different substances is a material that does not melt at any temperature.

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4 years ago

The following list contains some common polyatomic ions. Using the charge on these ions and the idea of valence, predict the for

SSSSS [86.1K]

Answer: $Na_2CO_3$ or Sodium carbonate.

$KMnO_4$ or Potassium permanganate

Sodium ion carries 1 + charge whereas carbonate ion carries overall charge of -2. So for every carbonate ion, two sodium ions combine to balance the charges and thus form a stable compound, $Na_2CO_3$

Potassium ion carries 1 + charge where as permanganate ion carries overall charge of -1. So for every permanganate ion, one potassium ion combines to balance the charges and thus form a stable compound, $KMnO_4$

The predicted formulas are shown in the attached image.

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3 years ago

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