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Questions tagged 'Mass'

13 questions

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Anonymous

Feb 11, 2025

Calculate the mass in grams of $700 billion worth of gold.?

In 2009, one of the U.S. government’s bailout packages amounted to $700 billion, at a time when gold was valued at $800 per ounce (or $28.20 per gram). Calculate the mass, in grams, of $700 billion...

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Anonymous

Jan 29, 2025

Why does energy equal mass times the speed of light squared?

What is the reasoning behind the equation that states energy is equal to mass multiplied by the speed of light squared (E=mc²)? Can you explain the significance of this relationship in the context of...

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Trace Hoeger

Jan 13, 2025

What is the mass of 18.8 moles of helium (He) atoms?

What is the mass of 18.8 moles of helium (He) atoms? a) 0.213 g b) 4.70 g c) 37.6 g d) 75.2 g Which of the following has the greatest mass in grams? 1) 1 atom of gold (Au) 2) 0.5 moles of lead (Pb)...

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Anonymous

Jan 01, 2025

What is the mass in grams of 5.90 mol C8H18?

What is the mass in grams of 5.90 moles of C8H18? A) 0.0512 g B) 19.4 g C) 89 g D) 673 g Please indicate your answer by selecting either A, B, C, or D. Thank you! 😊

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Anonymous

Jan 01, 2025

What is the magnitude of the scooter’s acceleration?

A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter’s acceleration? A. 0.22 m/s² B. 0.69 m/s² C. 3.2 m/s² D. 4.6 m/s² Additionally, an a...

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Daron Rolfson

Dec 30, 2024

What is the mass in grams of 0.250 mol of the common antacid calcium carbonate?

What is the mass, in grams, of 0.250 moles of the common antacid calcium carbonate (CaCO₃)? The options are: 400 g, 25.0 g, 17.0 g, 0.0400 g, and 0.00250 g.

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Anonymous

Dec 29, 2024

Apenny has a mass of 2.50g and the moon has a mass of ×7.351022kg, how many moles of pennies have a mass equal to the mass of the

A penny has a mass of 2.50 g, while the mass of the Moon is approximately 7.35 × 10^22 kg. How many moles of pennies would equal the mass of the Moon?

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Anonymous

Dec 06, 2024

What is the mass of 8.50×10^22 molecules of NH3?

I’m having difficulty solving the problem regarding the mass of 8.50 × 10²² molecules of NH₃ (ammonia). Could someone please explain how to approach this? Specifically, I would like guidance on the co...

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Anonymous

Dec 04, 2024

What is the answer to this physics question?

Suppose you push a hockey puck of mass ( m ) across frictionless ice for a time ( \Delta t ), starting from rest, which gives the puck a speed ( v ) after traveling a distance ( d ). If you repeat the...