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NeX [460]
3 years ago
13

Light can travel through outer space from the Sun to the Earth. This shows that

Chemistry
2 answers:
Pavlova-9 [17]3 years ago
6 0

Answer:

that light is on the electromagnetic spectrum

Explanation:

this is because In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. In this sense, gamma rays, X-rays, microwaves and radio waves are also light. Like all types of EM radiation, visible light propagates as waves. However, the energy imparted by the waves is absorbed at single locations the way particles are absorbed. The absorbed energy of the EM waves is called a photon, and represents the quanta of light.

riadik2000 [5.3K]3 years ago
6 0

Answer:

light is made of particles, called photons. Except their movement to earth, every photon vibrates in every direction (they vibrate in just one direction if light is polarized).

Explanation:

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2. 2AgNO3 + CaCl2 → 2AgCl + Ca(NO3)2
Slav-nsk [51]

Answer:

84.4g of AgCl

Explanation:

Based on the reaction:

2AgNO₃ + CaCl₂ → 2AgCl + Ca(NO₃)₂

<em>2 moles of AgNO₃ and 1 mole of CaCl₂ priduce 2 moles of AgCl and 1 mole of Ca(NO₃)₂</em>

<em />

100g of each reactant are:

AgNO₃: 100g × (1mol / 169.87g) = 0.589 moles

CaCl₂: 100g × (1mol / 110.98g) = 0.901 moles

For a complete reaction of 0.901 moles of CaCl₂ are necessaries 0.901×2 = <em>1.802 moles of AgNO₃. </em>As there are just 0.589moles, <em>AgNO₃ is limitng reactant</em>

<em></em>

0.589 moles of AgNO₃ produce:

0.589 moles × ( 2 moles AgCl / 2 moles AgNO₃) =

<em>0.589 moles of AgC</em>l. In mass:

0.589 moles of AgCl × (143.32g / mol) =<em> 84.4g of AgCl</em>

3 0
4 years ago
What is the purpose of molecular models?
dsp73

Answer: to see if the matter is a compound, mixture, or element.

Explanation:

can you please help with my most recent question :)

6 0
3 years ago
Provide your answer in the following format: [element name], [chemical family]
erastova [34]

Answer: Bismuth (Bi) , Nitrogen family

Explanation:

As the element has 5 valence electrons in the sixth energy level, which mens it belongs to 6th period as the valence electron has entered the 6th energy level.

Now as the electrons are  filled according to afbau's rule , the electronic configuration of the element will be :

[Xe]4f^{14}5d^{10}6s^26p^3

Now as the atomic number of element is equal to the number of electrons in a neutral atom , the atomic number is 83 and the element is Bismuth (Bi). As the last electron enters p -subshell , it is  a p block element. It lies in group 15 which is nitrogen family.

8 0
3 years ago
The pressure of a gas is _____ affected by the temperature and number of gas particles in a system, and it is _____ affected by
AlekseyPX
The pressure of a gas is directly affected by the temperature and number of gas particles in a system, and inversely affected by the volume of gas in the system.
3 0
4 years ago
Read 2 more answers
Which of the following statements correctly explains the motion of atoms and molecules within the different states of matter? *
sineoko [7]

Answer:

The correct answer is : The particles within all three states of matter are constantly moving.

Explanation:

The particles in the solid, liquid and gaseous states are in motion. In the latter is where they present greater movement and high kinetic energy, then follow the liquid state and finally the solid where the movement is more restricted (in this case, the particles vibrate).

5 0
3 years ago
Read 2 more answers
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