3 years ago

How many molecules are there in 0.655 moles of CH_2?

Chemistry

1 answer:

guajiro [1.7K]3 years ago

8 0

Answer:

Not sure about this one, sorry

Explanation:

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20) If a single gram of sugar contains 4 Calories of energy, what is the Calorie content from a serving of cereal that

Zanzabum

Answer:
36.8
Explanation:
Because 9.2 x 4 = 36.8

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2 years ago

Which is true about sugar dissolving in water?

gizmo_the_mogwai [7]

<span>The correct answer is "Sugar is the solute and water is the solvent". Why? Sugar can be dissolved by water itself, especially in hot water, which is why water is considered to be a solvent, while sugar is considered to be a solute because it can be dissolved.</span>

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3 years ago

The chemical formula for lithium phosphide is li3p

Oxana [17]

Sodium phosphide is the inorganic compound with the formula Na3P.

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3 years ago

Please help!!!

Aloiza [94]

Answer:

3 × 10¯¹⁰

Explanation:

9×10² ÷ 3×10¹²

The above expression can be simplified as follow:

9×10² ÷ 3×10¹²

Recall:

9 = 3²

9×10² ÷ 3×10¹² = 3²×10² ÷ 3×10¹²

Recall:

a^m ÷ a^n = a^(m – n)

3²×10² ÷ 3×10¹² = 3^(2 – 1) × 10^(2 – 12)

= 3¹ × 10¯¹⁰

Recall:

a¹ = a

3¹ × 10¯¹⁰ = 3 × 10¯¹⁰

4 0

3 years ago

What is the wavelength of a 2.80 Hz wave?

den301095 [7]

I attached the working and the answer to the question below.

Please note that C = speed of light, ν = frequency, λ= wavelength

<span> The wavelength of a 2.80 Hz wave is 1.07 </span>× 10¹⁰

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3 years ago