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Sauron [17]
3 years ago
10

Where else have you heard the term conversation? How does that term’s meaning in that other context relate to its meaning in che

mistry? Physical Elevate Science page 28 introduction to matter.
Chemistry
1 answer:
Mrac [35]3 years ago
7 0
I have no skins for you my brother and my girlfriend and my uncle are going out and have you come on the house for me to do you have to get on your phone
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X-rays had a frequency of about 3x10^18 determine it's wavelength (in nm) and energy per photon
Serggg [28]

Answer:

E = 19.89×10⁻¹⁶ J

λ = 1×10⁻¹ nm

Explanation:

Given data:

Frequency of xray = 3×10¹⁸ Hz

Wavelength of xray = ?

Energy of xray = ?

Solution:

speed of wave = wavelength × frequency

speed = 3×10⁸ m/s

3×10⁸ m/s  = λ ×3×10¹⁸ s⁻¹

λ = 3×10⁸ m/s  / 3×10¹⁸ s⁻¹

λ = 1×10⁻¹⁰m

m to nm:

λ = 1×10⁻¹⁰m×10⁹

λ = 1×10⁻¹ nm

Energy of x-ray:

E = h.f

h = plancks constant = 6.63×10⁻³⁴ Js

by putting values,

E = 6.63×10⁻³⁴ Js ×3×10¹⁸ s⁻ ¹

E = 19.89×10⁻¹⁶ J

7 0
2 years ago
a gas chamber is filled with four gases. When a small opening is made in the gas chamber you expect which gas to escape last hyd
Nimfa-mama [501]
I really don’t know the answer, please help this kiddo with his question
8 0
3 years ago
How does 2 Na (s) + Cl2 (g) = NaCl (s) represent the coefficient in the chemical equation
Elenna [48]

Answer:

The 2 would be placed in front of the reactant Na and in front of the product NaCl

2Na + Cl2 = 2NaCl

Explanation:

This is because the ratio of elements needs to be balanced on both sides.

On the reactants side, there are 2 Na molecules and 2 Cl molecules

On the products side, there are 2 Na molecules and 2 Cl molecules

So, now the equation is balanced

3 0
2 years ago
Given the following table, which statement is true about atoms A and B?
lisabon 2012 [21]

Answer:

The statement true is A. A and B are isotopes of the same element.

Explanation:

Isotopes correspond to atoms of the same element with different mass numbers (A), that is to say they differ in the amount of neutrons in the nucleus. In the case of compound A it has 10 neutrons, and B has 11.

6 0
3 years ago
Which of the following pairs are about equal in mass?
Mademuasel [1]

Answer:

Proton and neutrons

Explanation:

they both have a mass of 1 amu or 1 atomic mass

3 0
3 years ago
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