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Dominik [7]
3 years ago
5

What is atomic mass made of?

Chemistry
1 answer:
olasank [31]3 years ago
4 0

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

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What is the vowel.???????????? ​
Serhud [2]

Answer:

a e i o u

Explanation:

a e i o u

3 0
3 years ago
Determine how many grams of N2 are produced from the reaction of 8.37 g of H2O2 and 5.29 g of N2H4.
Dmitriy789 [7]
N₂H₄  +  2H₂O₂    →   N₂  +  4H₂O

mol = mass ÷ molar mass

If mass of hydrazine (N₂H₄)  = 5.29 g 
then mol of hydrazine           = 5.29 g ÷ ((14 ×2) + (1 × 4))
                                              = 0.165 mol

mole ratio of hydrazine to Nitogen is     1   :  1
  ∴ if moles of hydrazine = 0.165 mol
     then moles of nitrogen = 0.165 mol

Mass = mol × molar mass

Since mol of nitrogen (N₂)  = 0.165
then mass of hydrazine      = 0.165 × (14 × 2)
                                           = 4.62 g
5 0
3 years ago
What are the best note taking styles for high school?
photoshop1234 [79]

Answer:

cornell noted

Explanation:

used in middle school and can be helpful for subjects like ela history and science

5 0
3 years ago
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What volume of methanol should be used to make 1.25 L of a 21.0% by volume solution?<br> ___ mL
Pie

Answer:

  262.5 mL

Explanation:

21% of the 1.25 L volume is methanol, so the required amount of methanol is ...

  0.21 × 1250 mL = 262.5 mL

4 0
3 years ago
What frequency is a wave with a wavelength of 1km?
ryzh [129]

The frequency of wavelength of 1km <u>299792.458 Hz.</u>

These molecules already react to the inward motion of the loudspeaker membrane moving toward the source. Frequency and wavelength are inversely proportional to each other. The wave with the greatest frequency has the shortest wavelength. Twice the frequency means one-half the wavelength. For this reason, the wavelength ratio is the inverse of the frequency ratio.

calculation:-

C= wavelength × frequency

frequency = 3 × 10⁸/ 1000 Hz

= 299792.458 Hz.

= 3 ×10⁵ Hz

Based on such a model, we found that mass is not an intrinsic property of the particle. Instead, mass is basically a measure of particle energy. The relations between energy and mass can be directly derived based on the wave properties of the particle. Waves are one of the ways in which energy may be transferred between stores. Waves can be described as oscillations or vibrations about a resting position.

Learn more about The wavelength here:-brainly.com/question/10728818

#SPJ1

4 0
1 year ago
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