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mote1985 [20]
2 years ago
15

Which statement accurately describes the bond that forms between carbon and oxygen to create carbon dioxide

Chemistry
1 answer:
Allisa [31]2 years ago
8 0

Answer:

the bond that forms between carbon and oxygen to create carbon dioxide

A polar covalent bond

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A 5 g sample of pure gold has a density of 19.3 g/ml. Your friend purchased a gold ring that was made of 25 g of pure gold. What
patriot [66]

Answer:

96.5 g/ml

Explanation:

If 5g is 19.3 then 25g is 19.3x5 which is 96.5 g/ml

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Convert -32 F into K
Afina-wow [57]

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-32 Fahrenheit converts to 237.594 Kelvin

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3 years ago
If 3.289 x 10^23 atoms of potassium react with excess water, how many grams of hydrogen gas would be produced?
GarryVolchara [31]

Answer:

The amount in grams of hydrogen gas produced is 0.551 grams

Explanation:

The parameters given are;

Number of atoms of potassium, aₙ = 3.289 × 10²³ atoms

Chemical equation for the reaction is given as follows;

2K + 2H₂O \rightarrow KOH + H₂

Avogadro's number, N_A, regarding the number of molecules or atom per mole is given s follows;

N_A = 6.02 × 10²³ atoms/mole

Therefore;

The number of moles of potassium present = 3.289 × 10²³/(6.02 × 10²³) = 0.546 moles

2 moles of potassium produces one mole of hydrogen gas, therefore;

1 moles of potassium produces 1/2 mole of hydrogen gas, and 0.546 moles of potassium will produce 0.546/2 moles of hydrogen which is 0.273 moles of hydrogen gas

The molar mass of hydrogen gas = 2.016 grams

Therefore, 0.273 moles will have a mass of 0.273×2.016 = 0.551 grams.

The amount in grams of hydrogen gas produced = 0.551 grams.

8 0
3 years ago
Which two events are apart of the rock cycle
JulsSmile [24]

Answer:

The key processes of the rock cycle are crystallization, erosion and sedimentation, and metamorphism.

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mark me brainliest!!

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2 years ago
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