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rosijanka [135]
3 years ago
14

When an object reflects all the light waves that strike it looks white or black?

Physics
1 answer:
egoroff_w [7]3 years ago
3 0
Light waves can be from any color, depends on what it is bouncing no or reflecting off of.
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What volume of h2 gas (in l), measured at 756 mmhg and 90 ∘c, is required to synthesize 23.0 g ch3oh?
Naddika [18.5K]

First let us calculate for the moles of CH3OH formed:

moles CH3OH = 23 g / (32 g / mol) = 0.71875 mol

We see that there are 2 moles of H2 per mole of CH3OH, so:

moles H2 = 0.71875 mol * 2 = 1.4375 mol

 

Assuming ideal gas behaviour, we use the formula:

PV = nRT

V = nRT / P

V = 1.4375 mol * (62.36367 L mmHg / mol K) * (90 + 237.15 K) / 756 mm Hg

<span>V = 43.06 Liters</span>

6 0
3 years ago
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zmey [24]

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3 0
2 years ago
If the man on the left pulls on the object with a force of 500 N and the man on the right pulls on the object with a force of 75
Igoryamba
Force is a vector quantity
so pulling from opposite side will be negative
so
750+(-500)= 250N
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3 0
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Where would you find an inclined plane in a fan
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