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stira [4]
4 years ago
8

Which of these is a compound? Carbon, carbon dioxide, air, oxygen

Chemistry
2 answers:
VladimirAG [237]4 years ago
8 0
Carbon dioxide is a compound unlike the other which are elements.

Hope this helps! :3
ad-work [718]4 years ago
7 0
Carbon dioxide is a compound because carbon mixed with dioxide well makes that
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Which of the following could be the molecular formula for an alkane?
kicyunya [14]
Your answer would be C9H16
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4 years ago
What is a heterogenous mixture?
Nezavi [6.7K]

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Explanation:

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3 years ago
Oxygen has an electronegativity of 3.4, phosporus has an electronegativity of 2.2 The bond between them is
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B. polar covalent

Explanation:

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3 years ago
When bases dissolve in water they release what type of negative ion?
Leto [7]
A base generally releases a hydroxide ion (OH-) when dissolved in water. 

There are exceptions, such as ammonia NH3, which acts as a base but does not produce OH- ions. There are three definitions of acids and bases (Arrhenius, Bronsted-Lowry, and Lewis) and each one looks at acid/base characteristics differently. OH- donation is the Arrhenius definition.
4 0
4 years ago
How many grams are there in 1.1 x 1027 molecules of water (H2O)?
Nezavi [6.7K]

Answer:

C) 3.3 x 104 grams

Explanation:

1 mole of water contains 6.02 × 10^23 atoms

1.1 × 10^27 atoms will contain;

1.1 × 10^27 ÷ 6.02 × 10^23

= 0.1827 × 10^( 27 - 23)

= 0.1827 × 10^(4)

= 1.827 × 10³ moles of water.

To convert mole to mass in grams, we use the formula;

mole (n) = mass (m) ÷ molar mass (MM)

Molar mas of water (H2O) = 1(2) of H + 16 of O = 18g/mol

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1.827 × 10³ = mass / 18

mass = 1.827 × 10³ × 18

mass = 32.886 × 10³

mass = 3.286 × 10⁴

mass = 3.3 × 10⁴ grams

6 0
3 years ago
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