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2 years ago

How many different elements are present in c6h12o6

Chemistry

1 answer:

Margarita [4]2 years ago

5 0

Answer:

3 different elements are present in the compound.

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Two atoms that are isotopes of one another must have a different number of what? protons neutrons electrons all particles 2 poin

Hatshy [7]

Neutrons, just took the test

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3 years ago

When 16.4 g of steam at 100°C condenses how much heat is released?

OLEGan [10]

Answer:

37064 J

Explanation:

Data Given:

mass of Steam (m) = 16.4 g

heat released (Q) = ?

Solution:

This question is related to the latent heat of condensation.

Latent heat of condensation is the amount of heat released when water vapors condenses to liquid.

Formula used

Q = m x Lc . . . . . (1)

where

Lc = specific latent heat of condensation

Latent heat of vaporization of water is exactly equal to heat of condensation with - charge

So, Latent heat of vaporization of water have a constant value

Latent heat of vaporization of water = 2260 J/g

Latent heat of condensation of water will be = - 2260 J/g

Put values in eq. 1

Q = (16.4 g) x (- 2260 J/g)

Q = - 37064 J

So, 37064 J of heat will be released negative sign indicate release of energy

4 0

4 years ago

How much positive charge is in 1.4 kg of oxygen? The atomic weight (15.9994 g) of oxygen contains Avogadro’s number of atoms, wi

Cerrena [4.2K]

Answer:

$6.7511\times 10^7\ C$

Explanation:

The atomic weight of oxygen = 15.9994 g

This mass corresponds to 1 mole of the oxygen atoms.

Thus,

15.9994 g mass of oxygen contains $6.02\times 10^{23}$ atoms of oxygen.

1.4 kg = 1400 g ( 1 kg = 1000 g)

So,

1400 g mass of oxygen contains $\frac {6.02\times 10^{23}}{15.9994}\times 1400$ atoms of oxygen.

Number of atoms in 1400 g of oxygen = $526.769754\times 10^{23}$

Also, 1 atom of oxygen contains 8 protons

Charge of 1 proton = + $1.602\times 10^{-19}\ C$

So, Charge on 1 atom of oxygen = $8\times 1.602\times 10^{-19}\ C$

Thus,

Charge on $526.769754\times 10^{23}$ atoms of oxygen = $526.94476\times 10^{23}\times 8\times 1.602\times 10^{-19}\ C=6.7533\times 10^7\ C$

Thus, positive charge in 1.4 kg of oxygen = $6.7511\times 10^7\ C$

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3 years ago

I am the alkali metal that would be most likely to melt on a very hot day.

zalisa [80]

Rubidium is the alkali metal that would melt on a hot day.

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3 years ago

How do we know that caramelizing sugar is a chemical change ?

Katyanochek1 [597]

<span>Chemical transformation: it's all transformation changes the composition of matter, i.e. that matter produces a new substance with different initial properties burning sugar to make caramel, we cannot retrieve the initial sugar.
</span>
hope this helps!

4 0

4 years ago