What is a fossil? Explain.

Chemistry

1 answer:

Westkost [7]3 years ago

4 0

Answer:

the preserved remains of something that was once living

Explanation:

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A compound has the empirical formula chcl. a 256 ml flask, at 373 k and 750. torr, contains 0.800 g of the gaseous compound. giv

valentinak56 [21]

From the ideal gas law,
n = PV / RT
n= moles = W / M
W= weight
M = molar mass

So, W / M = PV /RT
=> M = WRT / PV
We got above the formula for molar mass.

Now, put the appropriate values.

W= 0.8 g
R=0.0821 atm / K-mol
T= 373 K
V= 256mL = 0.256 L
P = 750 torr = 750 / 760 = 0.987 atm

After putting these values and calculating the value of M, we get :

M = 97 g / mol

Now, Assuming the molecular formula is $(CHCl)_n$

So, molar mass = n × (12.01 + 1.01 + 35.45)

equate it with 97.

We get the value of n then:
n×(12.01 + 1.01 + 35.45) = 97

n = 2

Means molecular formula is $C_2H_2Cl_2$

3 0

3 years ago

A scientist has isolated a fatty acid that has 26 carbons bonded together. All of the carbon atoms in the chain are connected by

Sphinxa [80]

Answer:

The compound is a saturated fatty acid.

Explanation:

Fatty acids are carboxylic acids with a long chain, which can be 3-carbon long-chain atoms or above. According to the saturation of its bonds, they can be saturated (all single bonds) or unsaturated (mono or polyunsaturated, depending on the number of double bonds present in the molecule).

In this case, since it is a saturated fatty acid and it has 26 carbons, it is called cerotic acid, or hexacosanoic acid.

7 0

3 years ago

What is the difference between thermal energy and heat ?

kozerog [31]

There is really no difference thermal energy and heat are pretty the same thing.

4 0

3 years ago

Read 2 more answers

Please answer question vote you brainlest thanks

topjm [15]

Answer: