All categories

3 years ago

Why can Sirius be seen in the night sky? Thank you who ever answers

Chemistry

1 answer:

ra1l [238]3 years ago

7 0

Answer:

Because the star has a higher luminosity/intrinsic brightness than other stars.

You might be interested in

What is the volume of 68.0 g of ether if the density of ether is 0.72 g/mL?

umka2103 [35]

Answer:

94.44

Explanation:

Volume is equal to Mass/Density so therefore, you do the mass which is 68.0 g/0.72 g/mL which is the density and get 94.44 mL because the g cancel each other out when it comes to the label!

3 0

2 years ago

The diagram above shows the atomic emission line spectrum of hydrogen. The wavelength of each line is shown at the top of the li

Anni [7]

Hello there,

Your correct answer would be "<span>the energy of a photon".

Hope this helps.

~Hottwizzlers

</span>

6 0

2 years ago

Read 2 more answers

PLEASE HELP!!!! 20 MINS LEFT IM DYING PLS HELP

Zepler [3.9K]

Answer:

Kc = 0.20

Explanation:

N₂O₄ ⇄ 2NO₂

moles 5.3mol 2.3mol

Vol 5L 5L

Molarity 5.3/5M 2.3/5M

= 1.06M = 0.46M

Kc = [NO₂]²/[N₂O₄] = (0.46)²/(1.06) = 0.1996 ≅ 0.20

6 0

3 years ago

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell

olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

4 0

2 years ago

The product side of a chemical reaction is shown.

Inga [223]

The number that represents the coefficient on the product side of the chemical reaction, $-- > 7Ti_2(SO_4)_3$ is 7.

<h3>Coefficients of chemical equations</h3>

In equations representing chemical reactions, the coefficient of each reactant or product of a reaction is the number that comes on the left-hand side just before the chemical formula.

The coefficient of each species in a chemical reaction is obtainable when the equation of the reaction is balanced.

For example, in the following equation: 2A + B = 3C + D

The coefficients of A, B, C, and D are 2, 1, 3, and 1 respectively.

Applying this to the product side of a chemical reaction; $-- > 7Ti_2(SO_4)_3$

It means that the coefficient of the product is 7.

More on coefficients of chemical equations can be found here: brainly.com/question/28294176

#SPJ1

7 0

1 year ago