2 years ago

The heat of vaporization for water is 2260 J/g. How much heat would be needed to evaporate 19.27g of water?

Chemistry

1 answer:

zhenek [66]2 years ago

7 0

Answer:

1 hour of heat to regenerate all the excemulayed water

You might be interested in

If an atom has 8 protons and 8 neutrons in its nucleus, and 8 orbiting electrons, its atomic number would be

xxTIMURxx [149]

The atomic number is 8
Atomic number=number of proton or number of electrons

8 0

4 years ago

Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 to n = 3

tankabanditka [31]

5 0

3 years ago

Melatonin has the chemical formula C13H16N2O2. Less than 10 milligrams(0.01g) Convert the melatonin to moles

oee [108]

Answer: There are 0.000043 moles of melatonin.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

given mass = 10 mg = 0.01 g

molar mass of $C_{13}H_{16}N_2O_2$ = 232.28 g

${\text {moles of melatonin}}=\frac{0.01g}{232.28g/mol}=0.000043moles$

Thus there are 0.000043 moles of melatonin

6 0

3 years ago

Which factor causes chemical weathering it for science

VMariaS [17]

Answer:

acid or sunlight

Explanation:

7 0

3 years ago

Read 2 more answers

Who can tell me the half reaction about cucumber battery

xeze [42]

I've prepared some analysis and <span>cucumbers do have many comparable properties to potatoes, tomatoes, and lemons, all of which I know do work. So I would presume that cucumbers would also work. I would recommend trying it yourself to perceive. I'd love to hear the outcomes of your experiment. ;) </span>

6 0

3 years ago