At standard pressure, how do the boiling point and the freezing point of NaCl(aq) compare to the boiling point and the freezing point of H2O(l)?

Answers

Answer 1
Answer: I know that they are both lower

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Given the balanced equation:I + I==> I2Which statement describes the process represented by this equation?(1) A bond is formed as energy is absorbed.(2) A bond is formed and energy is released.(3) A bond is broken as energy is absorbed.(4) A bond is broken and energy is released.

Which atom has the least attraction for the electrons in a bond between that atom and an atom of hydrogen?(1) carbon
(2)nitrogen
(3)oxygen
(4) fluorine

Answers

Answer:

(1) Carbon

Explanation:

Then we are looking for attraction of electrons in a bond towards one element, we are looking at polar covalent bonds and electronegativity of the compound elements.

Polar Covalent Bonds - A pair of electrons that are bonded and are unequally shared between the 2 elements. It's bond value is from 0.4 < x < 1.7.

Electronegativity - The ability of an atom in a molecule to attract shared electrons to itself. The general trend of increasing Electronegativity is up and to the right of the Periodic Table.

Carbon is Element 6 in Period 2 Group 14.

Nitrogen is Element 7 in Period 2 Group 15.

Oxygen is Element 8 in Period 2 Group 16.

Fluorine is Element 9 in Period 2 Group 17.

Remember our trend for Electronegativity. If that is the case, the Fluorine would be the most electronegative, meaning it would attract shared electrons and hold on to them very strongly. Therefore, it would have a very strong attraction for Hydrogen's lone electron, as Fluorine wants to fill it's valence electron shell fully, from 7 to  8.

Therefore, the least attraction and the least electronegative element in the list is Carbon.

Stained glass can be useful for _____________________a. transmitting light and displaying colorful images.
b. churches to draw in new patrons who want to view its beauty from inside.
c. reflecting and absorbing light, as well as displaying colorful images.
d. creating mirrored images of light and colors on the surrounding walls of a religious structure.

Answers

Stained glass can be useful for churches to draw in new patrons who want to view its beauty from inside.

What is stained glass?

Stained glass is defined as a glass material which is made colored by means of adding metallic salts during the manufacturing process which imparts color to the glass.

These are used in many decorative purposes like decorating windows . The colors are imparted to the glass by mixing metal oxides into the colorless glass in its melted state.Sometimes fusion of a colored glass with a plain glass to make a stained glass is also used.

Stained glass is also prepared by glass paint where in streaks are introduced in glass by means of light firing in a furnace or a kiln.Silver stain is a range of compounds where in silver compound are mixed with binding substances and then applied to surface of glass,which are then fired in a furnace or in a kiln.

Learn more about stained glass,here:

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A. transmitting light and displaying colorful imaged. 

Are the following Mineral or Ore?

Answers

Answer:

1.Mineral

2.Ore

Explanation:

Green plants need light in order to survive Structures in the leaves absorb light, which in turn, helps plants make theirown tood
Under which color of light will plants be least likely to make food?
red
blue
orange
green

Answers

Answer:

The color of light in which plants are less likely to produce food is green.

Explanation:

Photosynthesis is the process by which plants take advantage of sunlight to convert it into chemical energy, necessary to manufacture their nutrients, their growth and development.

Plants do not absorb all the colors of the light spectrum, since due to their pigments they absorb colors with specific wavelengths. Green plants do not absorb the color green, but reflect it —due to the chlorophyll pigment— which gives the green color to those leaves.

For this reason, the light that plants take least advantage of to produce food is green light.

Other options:

    The colors blue, orange and red can be absorbed by the plant, to a lesser or greater degree.

Answer:

it would be green

Explanation:

Imagine that you have a metal bar sitting half in the sun and half in the dark. On a sunny day, the part of the metal that has been sitting in the sun feels hot. If you touch the part of the metal bar that has been sitting in the dark, will it feel hot or cold? Justify your answer in terms of thermal conductivity.

Answers

Answer:

It will feel hot.

Explanation:

The part of the metal that has been sitting in the sun will heat up, and because metal is a good conductor, the part sitting in the sun will heat up the part sitting in the dark.

We say metal is a good conductor because it has high thermal conductivity, which mean heat will flow from the hot section of the bar to the cold section of the bat.

1. Gas Formula Helium He Methane CHA Oxygen 0₂ Nitrogen N₂ Chlorine Cl₂ Relative atomic or molecular mass 4 ,16, 32 ,28 ,71 Look at the table and answer the following questions. (a) Which two gases will mix fastest? (b) Which gas will take least time to escape from gas syringe? (c) Which gas will diffuse slowest and why? Or (c) An unknown gas diffuses faster than 0₂ and slower than N₂, what can you about its molecular mass?​

Answers

Answer:

Explanation:

a) this is for the gases with lowest molecular mass meaning they are light and so move faster and so mix faster

b) The gas taking least time will be Cl2 as it is the heaviest gas and so moves the slowest

c) Same its Cl2 and same reason

d) This will be lighter than oxygen but heavier than nitrogen