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Alina [70]
3 years ago
10

Why is powdered magnesium used in fireworks,rather than magnesium ribbon?​

Chemistry
2 answers:
Basile [38]3 years ago
7 0
It is easier to mix with other chemicals and it gives an faster and easier reaction
blsea [12.9K]3 years ago
3 0

Answer:

<em>Because it will give a faster reaction.</em>

Explanation:

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Kinetic Energy Problems = KE = 0.5m x 12
Brut [27]

Explanation:

The kinetic energy of an object is given by :

K=\dfrac{1}{2}mv^2

1. Mass, m = 5 kg

Speed, v = 2 m/s

K_1=\dfrac{1}{2}\times 5\times (2)^2\\\\=10\ J

2. Mass, m = 71 kg

Speed, v = 1 m/s

K_2=\dfrac{1}{2}\times 71\times (1)^2\\\\=35.5\ J

3.  Mass, m = 71 kg

Speed, v = 5 m/s

K_3=\dfrac{1}{2}\times 71\times (5)^2\\\\=887.5\ J

4. Mass, m = 1816 kg

Speed, v = 25 m/s

K_4=\dfrac{1}{2}\times 1816\times (25)^2\\\\=567500\ J

8 0
3 years ago
Given the balanced equation, calculate the mass of product that can be prepared from 2.36 g of zinc metal.
Nataly_w [17]
Moles of Zn present= 2.36/65.4= 0.0361 moles
Therefore maximum moles of ZnO= 0.0722
Mass of one mole of ZnO= 81.4
Mass of ZnO produced= 0.0722 x 81.4= 5.87g
6 0
3 years ago
Relative to protons, electrons have:
saw5 [17]

Answer:

<u><em>(B.) a significantly lower mass that protons</em></u>

Explanation:

The mass (in g) of an electron is 9.11 ×10^{-28}g, which is significantly lower than the mass of protons and neutrons which are approximately the same. They are extremely small (equal to 0 amu), contributing nothing to the overall mass of the atom.

The nucleus has a mass of 1 amu and is positively charged.

6 0
3 years ago
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
kap26 [50]
Molar mass of FE2O3=2(55.85)+3(16)=159.7

2.56g*1mol/159.7*2mol/1mol*55.85g/1mol=1.79g
6 0
3 years ago
Which of these is the BEST definition of "civilization" for a history class? A) the way people talk B) a group that has a cultur
kolbaska11 [484]
B) A group that has a culture
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3 years ago
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