Start a conclusion based on the data from this experiment

Chemistry

1 answer:

Mandarinka [93]3 years ago

4 0

The number of chirps increases in relation to temperature.

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The chemical symbol of sodium is

ivolga24 [154]

Answer:

Explanation:

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3 years ago

Calculate the empirical formula of a compound that is 42.9% Carbon and 57.1% Oxygen.

Marrrta [24]

Answer:

CO.

Explanation:

Assuming the given percentages are by mass, we can solve this problem via imagining we have 100 g of the compound, if that were the case we would have:

42.9 g of C

57.1 g of O

Now we convert those masses into moles, using the elements' respective molar masses:

42.9 g of C ÷ 12 g/mol = 3.57 mol C

57.1 g of O ÷ 16 g/mol = 3.58 mol O

As the number of C moles and O moles is roughly the same, the empirical formula for the compound is CO.

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3 years ago

The ester below can be separated into phenol and an acetate salt, via saponification: heating the ester with a strong base, such

erastovalidia [21]

I found a similar question online which will help me answer your incomplete question. To make it easier, show all the elements of the compound given. It is shown in the second picture attached.

a.) The formula for unsaturation number is shown in the 3rd picture attached. Following this,
n = 8
m = 2(8) + 2 + 0 + 0 - 0 = 18
Thus,
x = Unsaturation number = (18 - 8)/2 = 5
The unsaturation number is 5.

b.) The molar mass of C is 12.01 g/mol; H is 1 g/mol; O is 16 g/mol. So, the molecular weight is:
Molecular weight = 12.01(8) + 8(1) + 2(16) = 136.08 g/mol
The molecular weight of the ester is 136.08 g/mol.

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3 years ago

Why is gold found in the pure state in nature?

Shkiper50 [21]

A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature. ... Over geological time scales, very few metals can resist natural weathering processes ! hope i helped!

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Which property of water makes it helpful to use in car radiators?

Zolol [24]

Water has a high specific heat. It needs to absorb 4.184 Joules of heat for one gram of water to increase its temperature by 1 degree celsius.

Water in car radiators is used as coolant because it takes longer to heat up. It needs to absorb large amount of heat energy before it changes its temperature and begins to get hot.

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3 years ago