3 years ago

Study the animal and plant cell above. Select the features that you find in BOTH types of cells

Chemistry

1 answer:

iris [78.8K]3 years ago

5 0

Plasma membrane,nucleus ,ribosomes

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How many mol of hydrogen are needed to double the volume occupied by 0.34 mol of hydrogen,

natima [27]

Answer:

0.68

Explanation:

Number of moles is directly propotionalto the volume at standard condition.

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3 years ago

What is the energy of an electromagnetic wave with a frequency of 8•10^12 Hz?

aniked [119]

Hello!

Find the Energy of the Photon by Planck's Equation, given:

E (photon energy) =? (in Joule)

h (Planck's constant) = $6.626*10^{-34}\:J * s$

f (radiation frequency) = $8*10^{12}\:Hz$

Therefore, we have:

$E = h*f$

$E = 6.626*10^{-34}*8*10^{12}$

$E = 53.008*10^{-34+12}$

$E = 53.008*10^{-22}$

$\boxed{\boxed{E = 5.3008*10^{-21}\:Joule}}\end{array}}\qquad\checkmark$

I Hope this helps, greetings ... DexteR! =)

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3 years ago

If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent?

GenaCL600 [577]

K:

m=155g
M=39g/mol

n = 155g / 39g/mol ≈ 3,97mol

KNO₃:

m=122g
M=101g/mol

n = 122g/101g/mol = 1,21mol

2K + 10KNO₃ ⇒ 6K₂O + N₂
2mol : 10mol
3,97mol : 1,21mol
limiting reagent

KNO₃ is limiting reagent

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3 years ago

How are electric circuits like water in pipes list two ways

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they both help things travel

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they pair up with other bases to make up the rungs of the DNA ladder

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