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Law Incorporation [45]
3 years ago
12

Which form of energy is converted to thermal energy when propane burns in air?

Chemistry
1 answer:
kolezko [41]3 years ago
8 0
Chemical because the propane has stored chemical energy which is being released and a by-product of that propane is heat or themal energy.
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A compound is found to have an empirical formula of CH2O. If its molecular mass is 60.0 g/mol, what is its molecular formula?
denpristay [2]
The empirical formula CH₂O has a mass [(12 × 1) + (1 × 2) + (16 × 1)] = 30 g/mol

If the empirical formula is 30 g/mol,
and the molecular formula is 60 g/mol

Then the multiple is = 60 g/mol ÷ 30 g/mol 
                                = 2

Therefor the molecular formula is 2(CH₂O) = C₂H₄O₂   (OPTION 2)
8 0
3 years ago
3/4(x-2)=x-1 please answer me ​
Elan Coil [88]

Answer:

-2

Explanation:

3/2 (x-2) = x-1

<=> 3/4 x - 3/2 = x-1

<=> 3/4 x - x = 3/2 -1

<=> -1/4 x =1/2

<=> x= -2

3 0
3 years ago
Read 2 more answers
What is chromatography. also give some applications from normal life.​
12345 [234]

Answer:

Explanation:

Chromatography is a technique for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at different rates.Chromatography is also used to help catch criminals.Spoilage detection. Chromatography can be used in flavor studies and to detect spoilage in foods. Used in additive detection and used in determining nutritional quality.

6 0
3 years ago
A geologist finds a section of rock that shows was ripple marks. What does it he pr send me or a ripple marks say about the area
n200080 [17]
A beacuse the rock starts to tear away from the water which will then create ripple marks
3 0
3 years ago
5HNO3<br> How many atoms are in this formula. Please explain step by step.
BaLLatris [955]

25

Explanation:

The coefficient 5 applis to each element in the molecule, so there are 5 times 1 H atom, 5 times 1 N atom, and ,since O has a 3 subscript, there are 5 times 3 O atoms. Therefore there are 25 atoms.

4 0
3 years ago
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