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AnnZ [28]
3 years ago
11

What is the name of this hydrocarbon

Chemistry
1 answer:
Bezzdna [24]3 years ago
7 0
You haven't shown the structural formula but it's either an Alkene(double bond c=b between 2 carbons) or an alkane
If there is 1 carbon it is methane (methene is not possible as a carbon cannot double bond with itself)
If there are 2 carbons it could be ethane or ethene
If there are 3 carbons it could be propane or propene
If there are 4 carbons it could be butane or butene
If there are 5 carbons it could be pentane or pentene
Etc.

E.g ethane E.g. Ethene
H H H H
| | | |
H---C---C---H C = C
| | | |
H H H H
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Which of the following is a primary source?
bulgar [2K]

Answer:

I think its C a scientific journal article

Explanation:

Any kind of journal is considered a primary source because  journals contain info that the original author wrote. Encyclopedias are considered teritary sources, but im not sure if that counts ...so id go with journals.

6 0
2 years ago
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A scientist, Dr. Sigma, states that a chemical taken internally once a day will prevent the common cold. However, no other scien
pshichka [43]

Answer:

not valid

Explanation:

Expert judgment is a useful validation method to verify the reliability of an investigation that is defined as “an informed opinion of people with experience in the subject, who are recognized by others as qualified experts in it, and who can give information, evidence, judgments and assessments ”

After submitting an instrument for comparison to the consultation and expert opinion, it must meet two quality criteria: validity and reliability. The validity of content is often established based on two situations, one that concerns the design of a test and the other, the validation of an instrument subject to translation and standardization procedures to adapt it to different cultural meanings. It is here that the task of the expert becomes a fundamental task to eliminate irrelevant aspects, incorporate those that are essential and / or modify those that require it.

5 0
3 years ago
Hydrogen sulfide burns form sulfur dioxide:
Helga [31]

Answer: 404.04 kJ.

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

moles of H_2S

\text{Number of moles}=\frac{26.7g}{34.1g/mol}=0.78moles

2H_2S(g)+3O_2(g)\rightarrow 2SO_2(g)+2H_2O(g)    \Delta H=-1036kJ

According to stoichiometry :

2 moles of H_2S on burning produces = 1036 kJ

Thus 0.78 moles of H_2S on burning produces =\frac{1036kJ}{2}\times 0.78=404.04

Thus the enthalpy change when burning 26.7 g of hydrogen sulfide is 404.04 kJ.

7 0
3 years ago
What hypothesis led to the discovery of the proton?
Lana71 [14]

When a neutral hydrogen atom loses an electron, a positively-charged particle should remain.

4 0
3 years ago
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One litre of hydrogen at STP weight 0.09gm of 2 litre of gas at STP weight 2.880gm. Calculate the vapour density and molecular w
expeople1 [14]

Answer:

we know, at STP ( standard temperature and pressure).

we know, volume of 1 mole of gas = 22.4L

weight of 1 Litre of hydrogen gas = 0.09g

so, weight of 22.4 litres of hydrogen gas = 22.4 × 0.09 = 2.016g ≈ 2g = molecular weight of hydrogen gas.

similarly,

weight of 2L of a gas = 2.88gm

so, weight of 22.4 L of the gas = 2.88 × 22.4/2 = 2.88 × 11.2 = 32.256g

hence, molecular weight of the gas = 32.256g

vapor density = molecular weight/2

= 32.256/2 = 16.128g

hence, vapor density of the gas is 16.128g.

Explanation:

4 0
2 years ago
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