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ivanzaharov [21]
2 years ago
5

true or false: an object's color is dependent on the chemical composition of its matter, which determines the wavelegnth that is

reflected
Chemistry
1 answer:
ratelena [41]2 years ago
6 0

Answer:

true

Explanation:

The physical and chemical composition of matter determines which wavelength (or color) is reflected.

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Which option correctly describes the influence of electronegativity difference on bond character?
Bezzdna [24]
Electronegativity is a property of a certain element to attract an electron from other elements towards itself during a reaction. The greater the difference of the electronegativities of two elements in a compound, the stronger is their binding force. The strongest bond is the ionic bond, then following by covalent bonds.
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How does organic matter help soil?
sergeinik [125]

Answer:

C

Explanation:

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7 0
2 years ago
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How much heat is required to change 100 g of ice (H2O) at 253 K to vapor (steam) at 393 K?
soldier1979 [14.2K]

<u>Answer:</u> The heat required will be 58.604 kJ.

<u>Explanation: </u>

To calculate the amount of heat required, we use the formula:

Q= m\times c\times \Delta T

Q= heat gained  or absorbed = ? J

m = mass of the substance = 100 g

c = heat capacity of water = 4.186 J/g ° C

Putting values in above equation, we get:

\Delta T={\text{Change in temperature}}=(393-253)K=140K=140^oC

Q=100g\times 4.186J/g^oC\times 140^oC

Q = 58604 Joules  = 58.604 kJ     (Conversion factor: 1 kJ = 1000J)

Thus, heat released by 100 grams of ice is 58.604kJ.

3 0
4 years ago
Determine the mass number of an element that contains 26 protons, 22 electrons, and 30 neurons
Cloud [144]

Answer:

56 is the mass

Explanation:

You would add 26 and 30(the protons and neutrons). I didn't add the electrons because they are so small their mass is negligible in this situation.

4 0
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