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Lilit [14]
3 years ago
14

How many atoms of group 17 element would be needed react with one atom of a group 2 element? Explain

Chemistry
2 answers:
ddd [48]3 years ago
5 0
2 atoms of group 7 elements, because group 2 elements have 2 valence electrons and group 7 need just one atoms to stabilize.
shusha [124]3 years ago
3 0
Only one atom because atom with 17 electrons need that one electron to become stable
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The gas in a sealed container has an absolute pressure of 125.4 kilopascals. If the air around the container is at a pressure of
AlexFokin [52]

Answer: C. 25.6 kPa

Explanation:

The Gauge pressure is defined as the amount of pressure in a fluid that exceeds the amount of pressure in the atmosphere.

As such, the formula will be,

PG = PT – PA

Where,

PG is Gauge Pressure

PT is Absolute Pressure

PA is Atmospheric Pressure

Inputted in the formula,

PG = 125.4 - 99.8

PG = 25.6 kPa

The gauge pressure inside the container is 25.6kPa which is option C.

4 0
3 years ago
Suppose that 273 of a substance displaces 26ml of water what is the substance
Llana [10]
273g/25 mL = 10.92 (that's the density)
What has a density of 10.92 grams/mL?  I don't know but I bet it's in your notes or on the worksheet.
3 0
3 years ago
Explain why mixing of red paint with white paint does not constitute a chemical reaction even though the product has a different
MArishka [77]

Answer:

Explanation:

In a chemical change through chemical reactions, a new kind of matter forms. When a paint is mixed together, a physical change has occurred and not a chemical change. The different color one perceives is just a mere overlap between the reflected white and red color which produces another hue.

Not all color changes infers a chemical reaction. A paint is a complex mixture on its own.

5 0
3 years ago
What kind of non-flowering plant produces seeds instead of spores?
Pie

Answer:

The answer to your question is Ferns

Explanation:

Ferns are called nonflowering plants and produce spores instead of seeds.

6 0
3 years ago
How many more oxygen atoms are in Na2HPO4H(disodium phosphate) then in 2H3PO(Phosphoric Acid)?
Serggg [28]

Answer:

in disodium phosphate = 4 oxygen atoms

in phosphoric acid = 1 oxygen atom

3 0
2 years ago
Read 2 more answers
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