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yanalaym [24]
4 years ago
6

How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct co

mbustion of hydrogen and oxygen?
Chemistry
1 answer:
Nikolay [14]4 years ago
7 0
Need more information
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There is a hurricane affecting the Gulf Coast. Weather or Climate?
Ivahew [28]

Answer:

weather

Explanation:

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3 years ago
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What parts of an atom can change during a nuclear reaction that cannot change during a chemical reaction? The number of neutrons
Tcecarenko [31]

Answer:

The number of protons and neutrons.

Explanation:

Neutrons and Protons can't be removed from nucleus from chemical reactions because they are held together super strong and tight. However, nuclear reactions are strong enough to separate them.

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3 years ago
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The ability to put in a light bulb with greater ease is because the bottom half is what type of simple machine?
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A screw simple machine

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3 years ago
How many atoms are contained in 100.0 g of mercury
Romashka [77]

3.00097 x 10^{23} atoms are contained in 100.0 g of mercury.

<h3>What is moles?</h3>

The mole is defined as the amount of substance that contains as many elementary entities as there are atoms in exactly 12 g of carbon-12.”

Number of moles of mercury = \frac{mass}{molar \;mass}

Number of moles of mercury = \frac{100.0 g}{200.59 u}

=  0.4985 moles

Number of moles of mercury = Number of atoms = moles of Hg x 6.02 X 10^{23}

= 0.4985 x 6.02 X 10^{23}

= 3.00097 x 10^{23} atoms.

Hence, 3.00097 x 10^{23} atoms are contained in 100.0 g of mercury.

Learn more about the moles here:

brainly.com/question/26416088

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5 0
2 years ago
What volume of air contains 10.0g of oxygen gas at 273 k and 1.00 atm?
VARVARA [1.3K]
12.3g 02times1 mol 02/32.0 g 02=mol 02
.38mol/x=20.95/100
x=1.8mol air... 

PV=nRT

101.3kPa times V =1.8 mol times 8.31[kPa *L]/{k*mol}*273k
V=40.3Lair
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3 years ago
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