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Shalnov [3]
3 years ago
12

When a substance goes through a chemical change, it forms a new substance that has different physical and chemical properties. O

ften, chemical changes are caused by changes in temperature. Which of the following is a chemical change caused by a change in temperature? A. freezing a popsicle B. cooking an egg C. melting ice cream D. boiling water
Chemistry
1 answer:
son4ous [18]3 years ago
6 0

Answer:

C

Explanation:

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Determine the empirical formula of a compound containing 40. 6 grams of carbon, 5. 1 grams of hydrogen, and 54. 2 grams of oxyge
zavuch27 [327]

The empirical formula is C₂H₃O₂

<h3>What is Empirical formula of a compound ?</h3>

The empirical formula is the simplest whole number ratio of elements present in a compound.

The total molar mass of the compound is 118.084 g/mol.

mass of Carbon present = 40.6

mass of Hydrogen present = 5.1 grams

mass of Oxygen present = 2 grams

Moles of C = 40.6/12 = 3.38

Moles of H = 5.1/1.008 = 5

Moles of Oxygen = 54.2/15.999 = 3.38

Ratio of Moles of C to Oxygen is 1 : 1

Ratio of Moles of C to H is 1/1.5

Multiplying each mole fraction by 2

The empirical formula is C₂H₃O₂

To know more about Empirical Formula

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5 0
2 years ago
Sugar is stirred into water tp form a solution what names to we give to the sugar and water
Nina [5.8K]
Your answer would be, Sugar is the solute, and water is the solvent. a solution is the mixture of two, or more substances.




Hope that helps!!!
7 0
4 years ago
The lines in an element's atomic spectrum result from
IRINA_888 [86]

Answer:

electron moving from a lower energy to a higher level of energy

7 0
3 years ago
A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes t
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5 0
4 years ago
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Calculate the number of grams of xenon in 4.658 g of the compound xenon tetrafluoride.
andrezito [222]

Answer:

The mass of xenon in the compound is 2.950 grams

Explanation:

Step 1: Data given

Mass of XeF4 = 4.658 grams

Molar mass of XeF4 = 207.28 g/mol

Step 2: Calculate moles of XeF4

Moles XeF4 = mass XeF4 / molar mass XeF4

Moles XeF4 = 4.658 grams / 207.28 g/mol

Moles XeF4 = 0.02247 moles

Step 3: Calculate moles of xenon

XeF4 → Xe + 4F-

For 1 mol xenon tetrafluoride, we have 1 mol of xenon

For 0.02247 moles XeF4 we have 0.02247 moles Xe

Step 4: Calculate mass of xenon

Mass xenon = moles xenon * molar mass xenon

Mass xenon = 0.02247 moles * 131.29 g/mol

Mass xenon = 2.950 grams

The mass of xenon in the compound is 2.950 grams

5 0
3 years ago
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