3 years ago

Describe the basic particle from which all elements are made.

1 answer:

5 0

Isnt the basic particle that all elements are made of electrons because i know that you can get isotopes which is a whole different subject

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Question 3 (1 point)

Serhud [2]

Answer:solid

Explanation:

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3 years ago

What is the definition of optical fiber technology?

Natalka [10]

Answer:

Fiber optics is the technology used to transmit information as pulses of light through strands of fiber made of glass or plastic over long distances.

Explanation:

I did a test on it before

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3 years ago

How many neutrons are in an atom with atomic number of 53 and mass number of 127?

asambeis [7]

Atomic number = 127 – 53=74 neutrons

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3 years ago

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) H 2O (l) Ca(OH) 2 (s) In a parti

Nimfa-mama [501]

Find the moles of CaO

divide mass (2.0g) by the RFM which is 56 (Ca is 40 add that to O which is 16 making 56) this gives 0.0356 moles.

Find the theoretical mass by multiplying the moles of CaO (which is 0.0356 as there are no balancing number making the ratio 1:1) by the RFM of Ca(OH)2 which is 74 (40+16+16+1+1)

74 (Ca(OH)2 RFM) x 0.0357 (CaO moles) = 2.6g which is the theoretical mass of Ca(OH)2

Find percentage yield by dividing the actual mass of Ca(OH)2 by the theoretical and then x100 this Should give you 82.3%

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3 years ago

What quantity is measured in mol/dm³?

natima [27]

L
$M = \frac{n}{V} \\ M = \frac{mol}{L} \\ or \\ M = \frac{mol}{ {dm}^{3} }$
mol/dm³ is measure for molarity

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3 years ago