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TiliK225 [7]
2 years ago
10

which of these sentences is true about nitrogen? a- as nitrogen is the rarest gas in the atmosphere, very few organism can use i

t directly. b- even though nitrogen is an abundant gas in the atmosphere, very few organisms can use it directly. c- even though nitrogen is an abundant gas in the atmosphere, no organisms can use it directly.
Chemistry
1 answer:
Nataly [62]2 years ago
4 0
B is true because plants can only use nitrogen in the form of nitrates, no other living thing needs nitrogen therefore the percentage of nitrogen in the atmosphere is 79%
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An isotope is the vary of neutrons in an element, causing its atomic mass to change. While an ion is a charged atom that bonds to be stable. 
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Network forensics might deal with what? Retrieving photos from a PC Analyzing text messages Investigating a data breach Defragme
balandron [24]

Answer:

Investigating a data breach

Explanation:

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8 0
2 years ago
A gas has a volume of 490. mL at a temperature of -35.0 degrees C. What volume would the gas occupy at 42.0 degrees Celsius? Ple
miskamm [114]

Answer:

648.5 mL

Explanation:

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Therefore, we can use Charle's law, which states that:

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Mathematically:

\frac{V}{T}=const.

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T is its absolute temperature

The equation can be rewritten as

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where in this problem we have:

V_1=490 mL is the initial volume of the gas

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Solving for V2, we find the final volume of the gas:

V_2=\frac{V_1 T_2}{T_1}=\frac{(490)(315)}{238}=648.5 mL

8 0
3 years ago
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Marina86 [1]

Answer:

True

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Hope it helps

5 0
3 years ago
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xenn [34]

Answer: Boron is the element which has properties of both metals and nonmetals.

Explanation:

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Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. They attain negative charge and form anion. Example: Chlorine (Cl) , Sulphur (S)

Metalloids are defined as the elements which show properties of both metals and non-metals. There are 7 metalloids in the periodic table. They are Boron (B) , Silicon (Si) , Germanium (Ge) , Arsenic (As) ,  Antimony (Sb), Tellurium (Te) and Polonium (Po).

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7 0
3 years ago
Read 2 more answers
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