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MariettaO [177]
3 years ago
5

What is the scientific notation of 696,000?

Chemistry
1 answer:
Lemur [1.5K]3 years ago
6 0

Hello There!

Your answer is In Image Provided.

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An ionic bond is an _________ attraction between ions.
BabaBlast [244]

Answer:

An ionic bond is an attraction between ions of opposite charge in an ionic compound.

8 0
3 years ago
Which transition by an electron will release the greatest amount of energy? answer soon please ​
alexira [117]

Answer:

When electron jumps from high energy level to lower energy level.

Explanation:

The elctronic transition from one energy level to another energy level within the atom, always involve energy transitions.

The energy released or absorbed by electronic transition is always discrete and is called as " Photon". It means when electron jumps from when energy level to another energy level the energy released or absorbed is treated as photon emitted or absorbed.

When an electron jumps from higher energy level to a lower energy level, a photon of specific wavelength and specific energy is emitted in other words we can say that energy is released or emitted.

The energy of photon emitted or absorbed is easily calculated using Rydberg Formula which is simply the energy difference between the two energy levels and is given as under;

Ephoton = Eo ( 1 / n1^2 - 1 / n2 ^ 2)

In the above formula n1 is the initial energy level of electron and n2 is the final energy level of electron.

Eo = 13.6 eV ( Here "o" in Eo is in subscripts)

In n1 and n2 1 and 2 are in the subscripts.

^ represents that the disgits after them are exponents.

So by just putting the values of energy levels n1 and n2 we can easily calculate the value of energy of photon ( energy due to electronic transition) and compare the results that which transition will give high energy photon and which will give low energy photon.

3 0
4 years ago
Sodium phosphate dissolves as follows: na3po4(s) → 3na (aq) po4-(aq). How many moles of na3po4 are required to make 1. 0 l of so
bezimeni [28]

The 0.05 moles of Na_{3}PO_{4} required to make 1 L of solution in which the Na concentration is 0. 15 M.

Calculation,

The Sodium phosphate dissolves as follows:

Na_{3}PO_{4}(s) → 3Na^{+} (aq)+PO_{4}^{-} (aq)

To make 1. L of solution in which the  Na^{+concentration is 0. 15 M

The morality  of Na^{+= 0.15 M = number of moles / volume in lit

The morality of Na^{+= 0.15 M = number of moles /1 Lit

number of moles of Na^{+ = 0.15 mole

The mole ratio is 1: 3

It means, the 1 mole of Na_{3}PO_{4}(s) required to form 3 mole of Na^{+

So, to form 0.15 mole of Na^{+  = 1×0.15 / 3 moles of Na_{3}PO_{4}(s)required.

Hence, number of moles of Na_{3}PO_{4}(s) required = 0.05 moles.

learn about moles

brainly.com/question/26416088

#SPJ4

6 0
2 years ago
The radius of a krypton atom is 110pm and it's mass is 1.39x10 to -22 g.
Readme [11.4K]

Answer:

24.9~g/cm^3

Explanation:

Density is found dividing mass by volume. In this case, we treat krypton as a sphere having a volume of V = \dfrac{4}{3}\pi r^3. Given:

m = 1.39\cdot 10^{-22}~g

r = 110 pm = 1.10\cdot 10^{-8}~cm

We obtain density of:

d = \dfrac{m}{V} = \dfrac{m}{\dfrac{4}{3}\pi r^3} = \dfrac{3m}{4\pi r^3}

d = \dfrac{3\cdot 1.39\cdot 10^{-22}~g}{4\pi\cdot (1.10\cdot 10^{-8}~cm)^3} = 24.9~g/cm^3

This is not a feasible value for a gas like krypton, its radius is actually not 110 pm.

6 0
3 years ago
It took 1.5 hours for a bus to go from one city to the next. The bus traveled at an average velocity of 52 mph, west. How far ap
kozerog [31]
The answer is 78 mph

6 0
3 years ago
Read 2 more answers
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