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IRINA_888 [86]
3 years ago
10

PLEASE HELP!! It’s the last day to get the assignment in!!

Chemistry
1 answer:
Blizzard [7]3 years ago
3 0

Answer:

Explanation:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Or Light is given off, a permanent color change occurs, gas is given off, heat is given off, and a precipitate is formed

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In plant cells, how are chloroplasts and mitochondria related?
guapka [62]

Answer:

Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.

5 0
3 years ago
What special<br> properties does<br> hydrogen bonding give<br> to water?
morpeh [17]

Answer: as a relatively high boiling point high specific heat connotation adhesion and density

Explanation:

water molecules are polar so they form hydrogen bonds this gives water unique properties

6 0
3 years ago
Write a full set of quantum numbers for the following:
Troyanec [42]

Explanation:

It is known that the maximum value of ml is equal to the vale of l. But the minimum value of n is as follows.

                    n = l + 1

where,     n = principle quantum number  

                l = azimuthal quantum number

Values of n can be 1, 2, 3, 4 and so on. Whereas the values of l is 0 for s, 1 for p, 2 for d, 3 for f, and so on.

Also, "m" is known as magnetic quantum number whose values can be equal to -l and +l.

  • Electronic configuration of Li is 1s^{2}2s^{1}. So here, n = 2, l = 0, m = 0 and s = ± \frac{1}{2}.
  • Electronic configuration of Br^{-} is [Ar]3d^{10}4s^{2}4p^{6}&#10;. So here, n = 4, l = 1, m = -1, 0, +1, and s = ± \frac{1}{2}.
  • Electronic configuration of Cs^{+} is [Kr]4d^{10}5s^{2}5p^{6}. So here, n = 5, l = 1, m =  -1, 0, +1, and s = ± \frac{1}{2}.
  • Electronic configuration of B is 1s^{2}2s^{2}2p^{1}. So here, n = 2, l = 1, m = -1, 0, +1, and s = ± \frac{1}{2}.
5 0
3 years ago
Determine whether each of the molecules below is polar or nonpolar. Tetrahedral C C l 4 CClX4 Nonpolar Tetrahedral C H 3 O H CHX
liraira [26]

Answer:

CCl4 - Nonpolar

CH3OH - polar

NH3 - polar

CS2 - Nonpolar

Explanation:

One important thing that we should know is that polarity has to do with the presence of a resultant dipole moment in a molecule.

Dipole moment is a vector quantity, This means that its direction is also taken into account when discussing the dipole moment of molecules.

Hence, symmetrical molecules such as CS2 and CCl4 are non-polar even though they have polar bonds because their dipoles cancel out(zero resultant dipole moment).

On the other hand, NH3 and CH3OH are non-symmetrical molecules hence they possess an overall dipole moment and are polar molecules.

3 0
3 years ago
Using a case scenario describe how you will use the scientific method to conduct an investigation within your community
kenny6666 [7]
Depends what kind of case we taking about
5 0
3 years ago
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