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Firlakuza [10]
2 years ago
10

Combining hydrogen and oxygen to make water is a physical change

Chemistry
1 answer:
shutvik [7]2 years ago
3 0

id say physical cause your changing the physical form of the molucles

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A gas sample is found to contain 39.10% carbon, 7.67% hydrogen, 26.11% oxygen, 16.82% phosphorus, and 10.30% fluorine. If the mo
Doss [256]

Answer:

C6H14O3F

Explanation:

The first step is to divide each compound by its molecular weight

Carbon

= 39.10/12

= 3.258

Hydrogen

= 7.67/1

= 7.67

Oxygen

= 26.11/16

= 1.63

Phosphorous

= 16.82/31

= 0.542

Flourine

= 10.30/19

= 0.542

The next step is to divide by the lowes value

3.258/0.542

= 6 mol of C

7.67/0.542

= 14 mol of H

1.63/0.542

= 3 mol of O

0.542/0.542

= 1 mol of P

0.542/0.542

= 1 mol of F

Hence the molecular formula is C6H14O3F

5 0
2 years ago
How much does the mass of 12.65-g sample of copper(II) nitrate hexahydrate decrease when heated?
garik1379 [7]
There is 103 percent of water in hydrate
4 0
2 years ago
Use the drop-down menus to complete each statement.
aleksley [76]

<u>Explanation:</u>

<u>1. Have many moons:</u>

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<u>2. Have a rocky composition:</u>

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<u>3. Revolve quickly around the Sun: </u>

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<u> 4. Rotate quickly on their axes: </u>

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6 0
3 years ago
Read 2 more answers
1. How is the modern periodic table organized?
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1. How is the modern periodic table organized?  Increasing atomic number

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4. Would you expect Strontium (Sr) to be more like potassium (K) or bromine (Br)?  

potassium

5. Barium (Ba) is in Group 2. Recall that atoms in Group 1 lose one electron to form ions with a 1+ charge. What type of ion does barium form?  Ba+2


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3 years ago
Write a molecular equation for the gas-evolution reaction that occurs when you mix aqueous hydroiodic acid and aqueous sodium su
Leona [35]
First, we construct the reaction equation:

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H₂SO₃ is formed as an intermediate but decomposes to water and SO₂ gas.
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