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larisa [96]
3 years ago
6

Which of these is an element? A. carbon B. carbon dioxide C. air D. water

Chemistry
2 answers:
Sloan [31]3 years ago
8 0
I think it's B carbon dioxide
Kaylis [27]3 years ago
4 0
Elements are pure substances. Carbon is the only one that is pure.
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What is a naturally occurring solid, inorganic compound or element?
Oksana_A [137]
Answer is: <span>naturally occurring solid, inorganic compound or element is mineral.
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</span><span>For example m</span>agnetite<span> is a </span><span>mineral of iron oxide.</span>
3 0
3 years ago
(Pls explain I don't really understand the question)
lara [203]

Answer:

When silver nitrate (AgNO3) and potassium chloride (KCl) combine in their liquid state, they form two products by double displacement method.

Silver Chloride (AgCl) and Potassium Nitrate (KNO3)

The reaction is AgNO3 + KCl --- AgCl + KNO3

The precipitate formed is AgCl

Explanation:

6 0
3 years ago
What is the volume of 7.50x10^24 molecules of NH3 at STP
Bas_tet [7]

Answer:

V NH3 = 304.334 L

Explanation:

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⇒ moles NH3 = (7.50 E24 molecules)×(mol/6.022 E23 molecules)

⇒ mole NH3 = 12.454 mol

assuming ideal gas:

  • PV = RTn

STP:

∴ T = 25°C ≅ 298 K

∴ P = 1 atm

⇒ V NH3 = RTn/P

⇒ V NH3 = ((0.082 atm.L/K.mol)×(298 K)×(12.454 mol))/(1 atm)

⇒ V NH3 = 304.334 L

4 0
4 years ago
1. If a solution of sodium chloride has 22.3 g of
lina2011 [118]

<u>We are given:</u>

Mass of NaCl in the given solution = 22.3 grams

Volume of the given solution = 2 L

<u></u>

<u>Number of Moles of NaCl:</u>

We know that the number of moles = Given mass / Molar mass

Number of moles = 22.3 / 58.44 = 0.382 moles

<u></u>

<u>Molarity of NaCl in the Given solution:</u>

We know that Molarity of a solution = Moles of Solute / Volume of Solution(in L)

Molarity = 0.382 / 2

Molarity = 0.191 M

<em />

7 0
3 years ago
What term is used for the electrons in the outermost shell or energy level
Romashka [77]

Answer:

Valence Electrons

Explanation:

Valence electrons are the electrons in the outermost shell and can be used to form bonds.

7 0
4 years ago
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