3 years ago

Which element x or y has more protons, assume both have the same energy level?

Chemistry

1 answer:

mamaluj [8]3 years ago

5 0

Which has less atomic radius

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How many copper atoms are in 70g of copper

Elanso [62]

Answer:

$n = 6.634\times 10^{23}\,atoms$

Explanation:

The total amount of atoms is found by multiplying Avogradro's Number and the number of moles:

$n = \left(6.022\times 10^{23}\,\frac{atoms}{mol} \right)\cdot \left(\frac{70\,g}{63.546\,\frac{g}{mol} } \right)$

$n = 6.634\times 10^{23}\,atoms$

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3 years ago

Why is a rise in sea level significant?

pogonyaev

Answer:

I honestly dont know but its cool problably from water fill or from the waves going to much

Explanation:

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2 years ago

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What is the name of the molecule shown below?

DiKsa [7]

Answer:

the correct awnser is b 1-heptene

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3 years ago

CLUES:

Phantasy [73]

5 because it makes sense

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2 years ago

What is the pressure, in atmospheres, of a 0.108-mol sample of helium gas at a temperature of 20.0°C if its volume is 0.505 L?

SpyIntel [72]

Answer:

P = 5.14ATM

Explanation:

Number of moles = 0.108moles

Temperature (T) = 20°C = 20 + 273.15 = 293.15K

Volume V = 0.505L.

Pressure (P) = ?

R = 0.082J/mol.K

From ideal gas equation,

PV = nRT

P = nRT / V

P = (0.108 * 0.082 * 293.15) / 0.505

P = 2.596 / 0.505

P = 5.14ATM

The pressure of the gas is 5.14ATM

5 0

3 years ago