All categories

3 years ago

Help ASAP no links or I’m reporting only answer if you are confident and if you are correct

Chemistry

1 answer:

denpristay [2]3 years ago

8 0

Answer:

It's Brisbane.

Remember latitude and longitude.

27 degrees south is on the second bottom of the map (cities located beneath the equator). Also, 153 degrees east is located on the eastern side of the prime meridian. When pinpointing the location with these coordinates, you will find Brisbane

You might be interested in

Which element is considered the foundation for making organic compounds

Rasek [7]

Answer: Carbon

Explanation: Organic compounds are those made by carbon atoms that link to other carbon or elements such as nitrogen, hydrogen or oxygen with covalent bonds.

The presence of these compounds were associated with living things, because most of them are produced by plants or animals. However nowdays substances like polymers and other synthetically made molecules can also be considered as organic since they are made of carbon.

5 0

2 years ago

The Balmer series consists of the spectral lines from hydrogen for an electron making a transition from an excited state to the

MaRussiya [10]

Answer:

Wavelength of the first four spectral line:

$\lambda_1=1216{\AA}$

$\lambda_2=1026{\AA}$

$\lambda_3=972.8{\AA}$

$\lambda_4=950{\AA}$

Explanation:

Lman series when electron from higher shell number and jumps to 1st shell then all the possible lines is called as lyman series.

to calculate wavelength of first four spectral line:

For hydrogen Z=1;

by using rydberg equation

$\frac{1}{\lambda} =RZ^2[\frac{1}{n_1^2} -\frac{1}{n_2^2} ]$

1. n=2 to n=1

$\frac{1}{\lambda} =RZ^2[\frac{1}{n_1^2} -\frac{1}{n_2^2} ]$

$\frac{1}{R} =912{\AA}$ =rydberg constant

$\lambda=\frac{4}{3R}$

$\lambda_1=1216{\AA}$

2. n=3 to n=1

$\lambda=\frac{9}{8R}$

$\lambda_2=1026{\AA}$

3. n=4 to n=1

$\lambda=\frac{16}{15R}$

$\lambda_3=972.8{\AA}$

4. n=5 to n=1

$\lambda=\frac{25}{24R}$

$\lambda_4=950{\AA}$

5 0

3 years ago

As a trend or pattern,the atomic radius go from ______ left to right across the period but ______ top to bottom down a group

stepan [7]

As a trend or pattern, the atomic radius decreases as you go left to right across the period, but increases as you go down a particular group.

5 0

3 years ago

Describe the chemical reaction based on the chemical equation below also whether the equation is balanced

Crank

Answer:

Its not balanced

4NH₃ + 7O₂ ⇒ 4NO + 6H₂O

3 0

3 years ago

The work function of palladium (Pd) is 5.22 eV. What is the minimum frequency of light to observe the photoelectric effect from

Ivan

Answer:

1)4×10^13Hz

2) 9.95×10-9J

Explanation:

From the image attached, it is clear that the work function of the palladium metal must first be obtained in joules. Then, the frequency is obtained from E=hf.

The kinetic energy if the photoelectrons is obtained as the difference between the energy of the photon and the work function of the metal.

4 0

3 years ago