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Rus_ich [418]
3 years ago
11

How many moles of water are needed to produce 56.8 g C2H2?

Chemistry
1 answer:
ANTONII [103]3 years ago
4 0
Vc BFF CFC. They. We’d 577755345
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What class of organic molecule is shown below?но|||OA. Carboxylic acidOB. AldehydeOC. EsterOD. KetoneH-C-C-O-C-C-HHHIIHHH
Lady bird [3.3K]

So,

The most important functional organic groups are shown in the following picture:

If we analyze your molecule properly, we can identify the following:

The answer is Ester.

5 0
1 year ago
Compound Y has the elements C, H, N and O. It's exact mass is 91.0425. Answer the following questions. Isotope Exact Mass 1H 1.0
Talja [164]

Answer:

Six C atoms (C₆); five H atoms (H₅); one N atom (N); no O atoms

Explanation:

The rule of 13 states that the formula of a compound is a multiple n of 13 (the molar mass of CH) plus a remainder r.

MF = CₙHₙ₊ᵣ

Y has a molecular mass of 91 u

91/13 =7r0

The formula can't be C₇H₇ because a hydrocarbon must have an even number of H atoms,

The odd mass and the odd number of H atoms make it reasonable to add an N atom and subtract CH₂ (CH₂ = 14):

C₇H₇ + N - CH₂ = C₆H₅N

Check:

6C = 6 × 12.000 = 72.000 u

5H = 5 ×   1.008 =   5.040

1N =  1 × 14.003 =  <u>14.003    </u>

             TOTAL =   91.043 u

This is excellent agreement with the observed mass of 91.0425 u.

There are six  C atoms (C₆)

There are five H atoms (H₅)

There is    one N atom   (N)

There are no   O atoms.

4 0
3 years ago
A phase diagram shows phase changes of a substance by illustrating which of the following?
EastWind [94]

Answer:

D) Pressure vs. temperature  

Explanation:

A phase diagram is a graph that shows the physical states of a substance under different conditions of temperature and pressure.

For example, the phase diagram below shows the different combinations of temperature and pressure under which water can exist as a solid, a liquid, or a gas.

3 0
3 years ago
The diagram shows monochromatic light passing through
Maru [420]

Destructive interference in which waves cancel each  other out is depicted in region X,Y and Z.

<u>Explanation:</u>

Interface is the particle property of light waves. When incident light beam is made to pass through holes, the waves will combine either constructively or destructively. Constructive interference means the waves having same phase will get added so they will increase in amplitude. While destructive interference means the waves combining have different phases like crests and troughs. So they undergo decrease or complete vanishing of amplitude.

When waves combine in constructive interference, they form bright white light and when they combine in destructive interference, they form dark black light. So the regions X, Y and Z are shown as dark black colors in the diagram, so these regions represent destructive interference in which waves cancel each  other out.

8 0
3 years ago
What is the world's biggest material lab?
arlik [135]
M C C O R M I C K T E A M ’ S O P E N Q U A N T U M M AT E R I A L S D ATA B A S E O F F E R S U N L I M I T E D A C C E S S T O ANALYSES OF NEARLY 300,000 COMPOUNDS
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