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Minchanka [31]
3 years ago
5

PLEASE HELP!! ASAP!! WILL MARK BRAINLIEST!!!

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

Answer:

Alkali metals are soft and have low melting points.

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When can all the coefficients in a balanced equation represent volume ratios? when reactants and products are solids at stp when
Alexxx [7]

Answer: when reactants and products are gases at STP.


Justification:


1) STP stands for standard temperature (0°) and pressure (1 atm).


2) According to the kinetic molecular theory of the gases, and as per Avogadro's principle, equal volumes of gases, at the same temperature and pressure, have the same number of molecules.



3) Since the coefficients in a balanced chemical equation represent number of moles, when reactants and products are gases at the same temperature and pressure, the mole ratios are the same that the volume ratios, and then the coefficients of the chemical equation represent the volume ratios.


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3 years ago
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Which of the following are examples of physical properties of ethanol? Select all that apply.
bazaltina [42]
Ethanol is: flammable, liquid at room temperature, the boiling point is 78.37 ° C.
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2 years ago
Which pair of elements will form a ionic bond
Marianna [84]

Answer:

Barium and Chlorine

Explanation:

Ionic bonds are formed between metals and non metals where the metals lose electrons and become positively charged and the non metals gain electrons and become negatively charge. The opposite charges cause them to be attracted to each other and Bond. The only metal in those options above is Barium. Therefore an ionic bond will be formed between Barium and Chlorine.

7 0
2 years ago
What kind of ions does metal form?
mario62 [17]

Answer:

Option D: Cations

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Air mass is a huge body of air which has the same general properties as the land or water over which it forms. *
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True

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Bc why not? :)

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