All categories

3 years ago

Water exist as a liquid between 0 and 100 Celsius. a. True b. False

Chemistry

1 answer:

adelina 88 [10]3 years ago

3 0

True is the answer as at 100 Celsius water boils

You might be interested in

HELPWITH THE QUESTIONS ALL OF THEM PLZZZZZ ASAPPPP

Klio2033 [76]

Answer:

Explanation:

ok i will get someone

4 0

3 years ago

Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transit

Lapatulllka [165]

<u>Answer:</u> The wavelength of spectral line is 656 nm

<u>Explanation:</u>

To calculate the wavelength of light, we use Rydberg's Equation:

$\frac{1}{\lambda}=R_H\left(\frac{1}{n_f^2}-\frac{1}{n_i^2} \right )$

Where,

$\lambda$ = Wavelength of radiation

$R_H$ = Rydberg's Constant = $1.097\times 10^7m^{-1}$

$n_f$ = Final energy level = 2

$n_i$ = Initial energy level = 3

Putting the values in above equation, we get:

$\frac{1}{\lambda }=1.097\times 10^7m^{-1}\left(\frac{1}{2^2}-\frac{1}{3^2} \right )\\\\\lambda =\frac{1}{1.524\times 10^6m^{-1}}=6.56\times 10^{-7}m$

Converting this into nanometers, we use the conversion factor:

$1m=10^9nm$

So, $6.56\times 10^{-7}m\times (\frac{10^9nm}{1m})=656nm$

Hence, the wavelength of spectral line is 656 nm

6 0

3 years ago

A balloon contains 5L of oxygen at a pressure of 90 kPa. How much oxygen will the ballon contain if the pressure is lowered to 6

VLD [36.1K]

We have that all (ideal) gases obey the fundamental gas equation: PV=nRT where P is the Pressure, V is the Volume, n is the number of moles, R is a universal constant and T is the temperature in Kelvin. In this process, we have that both the number of moles and the temperature stays the same. So if we denote by i the initial conditions and by f the final conditions of the gas, we have: $P_{i} * V_{i}=nRT= P{f}*V{f}$ . Hence, if we solve for the final Volume we get: $V_{f} = \frac {V_{i}*P_{i} }{P_{f}}$ . Now we know all the other variables; substituting we get that the final volume is 6.7 L (6.716 L ).

3 0

3 years ago

Read 2 more answers

Calculate the frequency of blue light of wavelength 4.5x10^2 nm

insens350 [35]

I did the math and i got 450 but i dont know if its right

7 0

3 years ago

The molecules which evaporate into the gas phase are the ones traveling with ________ velocity.

sveticcg [70]

The appropriate response is high. The best approach to consider it is those molecules have more vitality than the normal and it is unequivocally those higher enthusiastic ones that have enough vitality to break the intra-molecular forces and leave. By the way this is the reason when we sweat we chill off - the most enthusiastic molecules vanish diverting warmth.

5 0

3 years ago

Read 2 more answers