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Hitman42 [59]
2 years ago
8

Which of the following observations indicates that an atom has neutrons? (5 points)

Chemistry
1 answer:
finlep [7]2 years ago
8 0
Please link those observations so we can answer your question. have a good day <3
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A vehicle is moving with a velocity of 20 m/s.how far does it moves in one hrs
Airida [17]
Distance= Speed x Time

1hr=60mins

60mins=3600 secs

20 x 3600=72000

72000 is your answer.

5 0
3 years ago
Why is magneisum a metal​
Fofino [41]

Answer:

Magnesium is known for a long time as the lighter structural metal in the industry, due to it's low weight and to it's capability of forming mechanically resistant alloys.

3 0
2 years ago
Iron and carbon:steel:copper and tin:___________
vesna_86 [32]

Answer:

iron and carbon:steel:copper and tin: metal

4 0
2 years ago
Consider the complete reaction of 43.0 g of silicon with excess nitrogen gas in the reaction shown below. What mass of product f
kupik [55]
The answer to your question is : no.of moles of Si = 43/atomic mass of Si = 43/28.1 = 1.53

according to reaction 3 moles of Si gives 1 mole of Si3N4

so 1.53 mole of Si will give 1.53/3 = 0.51 mole of Si3N4

molar mass of Si3N4 = 140.28 g/mole

it means that 1 mole of Si3N4 = 140.28 g

so 0.51 mole of Si3N4 = 0.51 X 140.28 = 71.543 g
7 0
3 years ago
PLEASE HELP NOW!!!!!!!
Dahasolnce [82]
The  number of moles hydrogen produced when 6 moles of sodium are used is calculated  as below

2Na + 2H2O = 2NaOH  +H2

by use of mole ratio between Na to H2 which is 2:1 the moles of H2 is therefore

= 6 x1/2 = 3  moles of H2
7 0
3 years ago
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