4 years ago

Do I eat at McDonald's?

Chemistry

2 answers:

Oksana_A [137]4 years ago

7 0

Answer:

Maybe, idk

Explanation:

How in the world am i supposed to know

andre [41]4 years ago

6 0

Answer:

Yes BUT

Explanation:

If you order fries then get the small as it is the same amount then the medium but less money.

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blagie [28]

Answer:

False

Explanation:

3 0

3 years ago

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In certain conditions, hydrogen gas produces the emission spectra shown below. What causes the bright lines seen in the spectra?

rusak2 [61]

Answer:

a bright line spectrum is prodecued when an electron falls from a higher energy state

Explanation:

not sure if this is the exact answer you're looking for but it should be similar

7 0

3 years ago

Using the data below, calculate the enthalpy for the combustion of C to CO C(s) + O2(g)--> CO2 (g) ΔH1 = -393.5 kJ CO(g) + 1/

natali 33 [55]

Answer:

ΔH = -110.5kJ

Explanation:

It is possible to obtain enthalpy of combustion of a particular reaction by the algebraic sum of similar reactions (Hess's law). Using:

1. C(s) + O₂(g) → CO₂(g) ΔH₁ = -393.5kJ

2. CO(g) + 1/2O₂(g) → CO₂(g) ΔH₂ = -283.0kJ

The sum of 1 -2 gives:

C(s) + <u>O₂(g)</u> + <u>CO₂(g)</u> → <u>CO₂(g)</u> + CO(g) + <u>1/2O₂(g)</u>

C(s) + 1/2O₂(g) → CO(g) ΔH = -393.5kJ - (-283.0kJ) =

<u />

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3 years ago

A confused student was doing an isomer problem and listed the following six names as different structural isomers of C7H16. a. 1

klasskru [66]

In case of heptane (C7H16) the following structural isomers are possible

shown in figure

a. 1-sec-butylpropane : this is actually 3-methyl hexane

b. 4-methylhexane : this is actually 3-methylhexane

c. 2-ethylpentane : this is actually 3-methyl hexane

d. 1-ethyl-1-methylbutane: 3-methylhexane

e. 3-methylhexane: correct IUPAC

f. 4-ethylpentane: This is actually 3-methylhexane

Hence all represent single isomer

4 0

3 years ago

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Calculate the molarity of 4.56 grams of NaCl dissolved in 355 ml of total solution?

alexira [117]

Answer:

0.22 mol / L

Explanation:

Please see the answer in the picture attached below.

Hope this can help you. Have a nice day !

3 0

3 years ago